From 83f6a0be7761323ca8326b45aa857cc99a38fe28 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Thu, 11 Oct 2018 11:58:21 +0530
Subject: [PATCH 1/8] phpcs basic errors resolved and spacing issues resolved

---
 admin/class-fastcgi-purger.php                |  54 ++++++-
 admin/class-nginx-helper-admin.php            |  21 ++-
 admin/class-phpredis-purger.php               |  51 ++++++-
 admin/class-predis-purger.php                 |  57 ++++++-
 admin/class-purger.php                        | 141 ++++++++++++++----
 admin/partials/nginx-helper-admin-display.php |  11 +-
 .../partials/nginx-helper-general-options.php |  96 ++++++++----
 .../partials/nginx-helper-sidebar-display.php |   9 +-
 includes/class-nginx-helper.php               |   9 +-
 phpcs.xml                                     |  38 +++++
 10 files changed, 387 insertions(+), 100 deletions(-)
 create mode 100644 phpcs.xml

diff --git a/admin/class-fastcgi-purger.php b/admin/class-fastcgi-purger.php
index d93cdf16..5b315325 100644
--- a/admin/class-fastcgi-purger.php
+++ b/admin/class-fastcgi-purger.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The admin-specific functionality of the plugin.
  *
@@ -19,23 +18,31 @@
  */
 class FastCGI_Purger extends Purger {
 
+	/**
+	 * Function to purge url.
+	 *
+	 * @param string $url URL.
+	 * @param bool   $feed Weather it is feed or not.
+	 */
 	public function purgeUrl( $url, $feed = true ) {
+
 		global $nginx_helper_admin;
 
 		$this->log( '- Purging URL | ' . $url );
 
-		$parse = parse_url( $url );
+		$parse = wp_parse_url( $url );
 
 		if ( ! isset( $parse['path'] ) ) {
 			$parse['path'] = '';
 		}
 
 		switch ( $nginx_helper_admin->options['purge_method'] ) {
+
 			case 'unlink_files':
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'] . $parse['path'];
 				$_url_purge      = $_url_purge_base;
 
-				if ( isset( $parse['query'] ) && $parse['query'] != '' ) {
+				if ( isset( $parse['query'] ) && $parse['query'] !== '' ) {
 					$_url_purge .= '?' . $parse['query'];
 				}
 
@@ -48,32 +55,42 @@ public function purgeUrl( $url, $feed = true ) {
 					$this->_delete_cache_file_for( $feed_url . 'rdf/' );
 				}
 				break;
+
 			case 'get_request':
 				// Go to default case
+
 			default:
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'] . '/purge' . $parse['path'];
 				$_url_purge      = $_url_purge_base;
 
-				if ( isset( $parse['query'] ) && '' != $parse['query'] ) {
+				if ( isset( $parse['query'] ) && '' !== $parse['query'] ) {
 					$_url_purge .= '?' . $parse['query'];
 				}
 
 				$this->_do_remote_get( $_url_purge );
 
 				if ( $feed ) {
+
 					$feed_url = rtrim( $_url_purge_base, '/' ) . '/feed/';
 					$this->_do_remote_get( $feed_url );
 					$this->_do_remote_get( $feed_url . 'atom/' );
 					$this->_do_remote_get( $feed_url . 'rdf/' );
+
 				}
 				break;
+
 		}
+
 	}
 
+	/**
+	 * Function to custom purge urls.
+	 */
 	public function customPurgeUrls() {
+
 		global $nginx_helper_admin;
 
-		$parse = parse_url( site_url() );
+		$parse = wp_parse_url( site_url() );
 
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
@@ -82,45 +99,68 @@ public function customPurgeUrls() {
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, false );
 
 		switch ( $nginx_helper_admin->options['purge_method'] ) {
+
 			case 'unlink_files':
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'];
 
 				if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
+
 					foreach ( $purge_urls as $purge_url ) {
+
 						$purge_url = trim( $purge_url );
 
 						if ( strpos( $purge_url, '*' ) === false ) {
+
 							$purge_url = $_url_purge_base . $purge_url;
-							$this->log( '- Purging URL | ' . $url );
+							$this->log( '- Purging URL | ' . $purge_url );
 							$this->_delete_cache_file_for( $purge_url );
+
 						}
+
 					}
+
 				}
 				break;
+
 			case 'get_request':
 				// Go to default case
+
 			default:
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'] . '/purge';
 
 				if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
+
 					foreach ( $purge_urls as $purge_url ) {
+
 						$purge_url = trim( $purge_url );
 
 						if ( strpos( $purge_url, '*' ) === false ) {
+
 							$purge_url = $_url_purge_base . $purge_url;
-							$this->log( '- Purging URL | ' . $url );
+							$this->log( '- Purging URL | ' . $purge_url );
 							$this->_do_remote_get( $purge_url );
+
 						}
+
 					}
+
 				}
 				break;
+
 		}
+
 	}
 
+	/**
+	 * Purge everything.
+	 */
 	public function purgeAll() {
+
 		$this->unlinkRecursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
 		$this->log( '* * * * *' );
 		$this->log( '* Purged Everything!' );
 		$this->log( '* * * * *' );
+
 	}
+
 }
diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index 5e06365f..f240dfb0 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The admin-specific functionality of the plugin.
  *
@@ -316,14 +315,14 @@ public function nginx_helper_get_feeds() {
 		?>
 		<ul role="list">
 		<?php
-		if ( $maxitems == 0 ) {
-			echo '<li role="listitem">' . __( 'No items', 'nginx-helper' ) . '.</li>';
+		if ( $maxitems === 0 ) {
+			echo '<li role="listitem">' . esc_html_e( 'No items', 'nginx-helper' ) . '.</li>';
 		} else {
 			// Loop through each feed item and display each item as a hyperlink.
 			foreach ( $rss_items as $item ) {
 				?>
 					<li role="listitem">
-						<a href='<?php echo $item->get_permalink(); ?>' title='<?php echo __( 'Posted ', 'nginx-helper' ) . $item->get_date( 'j F Y | g:i a' ); ?>'><?php echo $item->get_title(); ?></a>
+						<a href='<?php echo esc_url( $item->get_permalink() ); ?>' title='<?php echo esc_attr_e( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ); ?>'><?php echo esc_html( $item->get_title() ); ?></a>
 					</li>
 				<?php
 			}
@@ -373,6 +372,7 @@ public function add_timestamps() {
 				'<!--Visit http://wordpress.org/extend/plugins/nginx-helper/faq/ for more details-->';
 
 		echo $timestamps;
+
 	}
 
 	/**
@@ -439,13 +439,16 @@ public function get_map() {
 	public function update_map() {
 
 		if ( is_multisite() ) {
+
 			$rt_nginx_map = $this->get_map();
 
 			if ( $fp = fopen( $this->functional_asset_path() . 'map.conf', 'w+' ) ) {
 				fwrite( $fp, $rt_nginx_map );
 				fclose( $fp );
 			}
+
 		}
+
 	}
 
 	/**
@@ -539,7 +542,9 @@ public function update_new_blog_options( $blog_id ) {
 	public function purge_all() {
 		global $nginx_purger;
 
-		if ( ! isset( $_REQUEST['nginx_helper_action'] ) ) {
+		$action = get_query_var( 'nginx_helper_action', false );
+
+		if ( empty( $action ) ) {
 			return;
 		}
 
@@ -547,12 +552,12 @@ public function purge_all() {
 			wp_die( 'Sorry, you do not have the necessary privileges to edit these options.' );
 		}
 
-		$action = $_REQUEST['nginx_helper_action'];
+		if ( 'done' === $action ) {
 
-		if ( 'done' == $action ) {
 			add_action( 'admin_notices', array( &$this, 'display_notices' ) );
 			add_action( 'network_admin_notices', array( &$this, 'display_notices' ) );
 			return;
+
 		}
 
 		check_admin_referer( 'nginx_helper-purge_all' );
@@ -571,6 +576,6 @@ public function purge_all() {
 	 * Dispay plugin notices.
 	 */
 	public function display_notices() {
-		echo '<div class="updated"><p>' . __( 'Purge initiated', 'nginx-helper' ) . '</p></div>';
+		echo '<div class="updated"><p>' . esc_html_e( 'Purge initiated', 'nginx-helper' ) . '</p></div>';
 	}
 }
diff --git a/admin/class-phpredis-purger.php b/admin/class-phpredis-purger.php
index fd8e5a17..e6dafba5 100644
--- a/admin/class-phpredis-purger.php
+++ b/admin/class-phpredis-purger.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The admin-specific functionality of the plugin.
  *
@@ -48,30 +47,41 @@ public function __construct() {
 		}
 	}
 
+	/**
+	 * Purge all cache.
+	 */
 	public function purgeAll() {
-		global $nginx_helper_admin;
 
 		$this->log( '* * * * *' );
 		$this->log( '* Purged Everything!' );
 		$total_keys_purged = $this->delete_keys_by_wildcard( '*' );
+
 		if ( $total_keys_purged ) {
 			$this->log( "Total {$total_keys_purged} urls purged." );
 		} else {
 			$this->log( 'No Cache found.' );
 		}
+
 		$this->log( '* * * * *' );
+
 	}
 
+	/**
+	 * Purge url.
+	 *
+	 * @param string $url
+	 * @param bool   $feed
+	 */
 	public function purgeUrl( $url, $feed = true ) {
+
 		global $nginx_helper_admin;
 
-		$parse = parse_url( $url );
+		$parse = wp_parse_url( $url );
 
 		if ( ! isset( $parse['path'] ) ) {
 			$parse['path'] = '';
 		}
 
-		$host            = $nginx_helper_admin->options['redis_hostname'];
 		$prefix          = $nginx_helper_admin->options['redis_prefix'];
 		$_url_purge_base = $prefix . $parse['scheme'] . 'GET' . $parse['host'] . $parse['path'];
 		$is_purged       = $this->delete_single_key( $_url_purge_base );
@@ -81,14 +91,19 @@ public function purgeUrl( $url, $feed = true ) {
 		} else {
 			$this->log( '- Cache Not Found | ' . $url, 'ERROR' );
 		}
+
 		$this->log( '* * * * *' );
+
 	}
 
+	/**
+	 * custom purge urls.
+	 */
 	public function customPurgeUrls() {
+
 		global $nginx_helper_admin;
 
-		$parse           = parse_url( site_url() );
-		$host            = $nginx_helper_admin->options['redis_hostname'];
+		$parse           = wp_parse_url( site_url() );
 		$prefix          = $nginx_helper_admin->options['redis_prefix'];
 		$_url_purge_base = $prefix . $parse['scheme'] . 'GET' . $parse['host'];
 
@@ -99,40 +114,57 @@ public function customPurgeUrls() {
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
+
 			foreach ( $purge_urls as $purge_url ) {
+
 				$purge_url = trim( $purge_url );
 
 				if ( strpos( $purge_url, '*' ) === false ) {
+
 					$purge_url = $_url_purge_base . $purge_url;
 					$status    = $this->delete_single_key( $purge_url );
+
 					if ( $status ) {
 						$this->log( '- Purge URL | ' . $purge_url );
 					} else {
 						$this->log( '- Cache Not Found | ' . $purge_url, 'ERROR' );
 					}
+
 				} else {
+
 					$purge_url = $_url_purge_base . $purge_url;
 					$status    = $this->delete_keys_by_wildcard( $purge_url );
+
 					if ( $status ) {
 						$this->log( '- Purge Wild Card URL | ' . $purge_url . ' | ' . $status . ' url purged' );
 					} else {
 						$this->log( '- Cache Not Found | ' . $purge_url, 'ERROR' );
 					}
+
 				}
+
 			}
+
 		}
+
 	}
 
 	/**
 	 * Single Key Delete Example
 	 * e.g. $key can be nginx-cache:httpGETexample.com/
+	 *
+	 * @param $key
+	 *
+	 * @return int
 	 */
 	public function delete_single_key( $key ) {
+
 		try {
 			return $this->redis_object->del( $key );
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
 
 	/**
@@ -144,6 +176,10 @@ public function delete_single_key( $key ) {
 	 * if return value is 0, that means no matches were found
 	 *
 	 * Call redis eval and return value from lua script
+	 *
+	 * @param string $pattern
+	 *
+	 * @return mixed
 	 */
 	public function delete_keys_by_wildcard( $pattern ) {
 
@@ -157,10 +193,13 @@ public function delete_keys_by_wildcard( $pattern ) {
 end
 return k
 LUA;
+
 		try {
 			return $this->redis_object->eval( $lua, array( $pattern ), 1 );
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
+
 }
diff --git a/admin/class-predis-purger.php b/admin/class-predis-purger.php
index 75bacb12..37041e52 100644
--- a/admin/class-predis-purger.php
+++ b/admin/class-predis-purger.php
@@ -29,6 +29,7 @@ class Predis_Purger extends Purger {
 	 * @since    2.0.0
 	 */
 	public function __construct() {
+
 		global $nginx_helper_admin;
 
 		if ( ! class_exists( 'Predis\Autoloader' ) ) {
@@ -49,51 +50,71 @@ public function __construct() {
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
 
+	/**
+	 * Purge all.
+	 */
 	public function purgeAll() {
+
 		global $nginx_helper_admin;
 
-		$prefix = trim( $rt_wp_nginx_helper->options['redis_prefix'] );
+		$prefix = trim( $nginx_helper_admin->options['redis_prefix'] );
 
 		$this->log( '* * * * *' );
 
 		// If Purge Cache link click from network admin then purge all.
 		if( is_network_admin() ) {
-			delete_keys_by_wildcard( $prefix . '*' );
+
+			$this->delete_keys_by_wildcard( $prefix . '*' );
 			$this->log( '* Purged Everything! * ' );
+
 		} else { // Else purge only site specific cache
+
 			$parse = wp_parse_url( get_home_url() );
 			$parse['path'] = empty( $parse['path'] ) ? '/' : $parse['path'];
-			delete_keys_by_wildcard( $prefix . $parse['scheme'] . 'GET' . $parse['host'] . $parse['path'] . '*' );
+			$this->delete_keys_by_wildcard( $prefix . $parse['scheme'] . 'GET' . $parse['host'] . $parse['path'] . '*' );
 			$this->log( '* ' . get_home_url() . ' Purged! * ' );
+
 		}
 
 		$this->log( '* * * * *' );
+
 	}
 
+	/**
+	 * Purge url.
+	 *
+	 * @param string $url
+	 * @param bool   $feed
+	 */
 	public function purgeUrl( $url, $feed = true ) {
+
 		global $nginx_helper_admin;
 
 		$this->log( '- Purging URL | ' . $url );
 
-		$parse = parse_url( $url );
+		$parse = wp_parse_url( $url );
 
 		if ( ! isset( $parse['path'] ) ) {
 			$parse['path'] = '';
 		}
 
-		$host            = $nginx_helper_admin->options['redis_hostname'];
 		$prefix          = $nginx_helper_admin->options['redis_prefix'];
 		$_url_purge_base = $prefix . $parse['scheme'] . 'GET' . $parse['host'] . $parse['path'];
 		$this->delete_single_key( $_url_purge_base );
+
 	}
 
+	/**
+	 * Custom purge urls.
+	 */
 	public function customPurgeUrls() {
+
 		global $nginx_helper_admin;
 
-		$parse           = parse_url( site_url() );
-		$host            = $nginx_helper_admin->options['redis_hostname'];
+		$parse           = wp_parse_url( site_url() );
 		$prefix          = $nginx_helper_admin->options['redis_prefix'];
 		$_url_purge_base = $prefix . $parse['scheme'] . 'GET' . $parse['host'];
 
@@ -104,10 +125,13 @@ public function customPurgeUrls() {
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
+
 			foreach ( $purge_urls as $purge_url ) {
+
 				$purge_url = trim( $purge_url );
 
 				if ( strpos( $purge_url, '*' ) === false ) {
+
 					$purge_url = $_url_purge_base . $purge_url;
 					$status    = $this->delete_single_key( $purge_url );
 					if ( $status ) {
@@ -115,22 +139,33 @@ public function customPurgeUrls() {
 					} else {
 						$this->log( '- Not Found | ' . $purge_url, 'ERROR' );
 					}
+
 				} else {
+
 					$purge_url = $_url_purge_base . $purge_url;
 					$status    = $this->delete_keys_by_wildcard( $purge_url );
+
 					if ( $status ) {
 						$this->log( '- Purge Wild Card URL | ' . $purge_url . ' | ' . $status . ' url purged' );
 					} else {
 						$this->log( '- Not Found | ' . $purge_url, 'ERROR' );
 					}
+
 				}
+
 			}
+
 		}
+
 	}
 
 	/**
 	 * Single Key Delete Example
 	 * e.g. $key can be nginx-cache:httpGETexample.com/
+	 *
+	 * @param string $key
+	 *
+	 * @return mixed
 	 */
 	public function delete_single_key( $key ) {
 
@@ -139,6 +174,7 @@ public function delete_single_key( $key ) {
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
 
 	/**
@@ -150,6 +186,10 @@ public function delete_single_key( $key ) {
 	 * if return value is 0, that means no matches were found
 	 *
 	 * Call redis eval and return value from lua script
+	 *
+	 * @param string $pattern
+	 *
+	 * @return mixed
 	 */
 	public function delete_keys_by_wildcard( $pattern ) {
 
@@ -163,10 +203,13 @@ public function delete_keys_by_wildcard( $pattern ) {
 end
 return k
 LUA;
+
 		try {
 			return $this->redis_object->eval( $lua, 1, $pattern );
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
+
 }
diff --git a/admin/class-purger.php b/admin/class-purger.php
index 70adead2..4a92e7ee 100644
--- a/admin/class-purger.php
+++ b/admin/class-purger.php
@@ -58,7 +58,7 @@ public function purgePostOnCommentChange( $newstatus, $oldstatus, $comment ) {
 
 		switch ( $newstatus ) {
 			case 'approved':
-				if ( 1 == $nginx_helper_admin->options['purge_page_on_new_comment'] ) {
+				if ( 1 === $nginx_helper_admin->options['purge_page_on_new_comment'] ) {
 					$this->log( '* Comment ( ' . $_comment_id . ' ) approved. Post ( ' . $_post_id . ' ) purging...' );
 					$this->log( '* * * * *' );
 					$this->purgePost( $_post_id );
@@ -67,8 +67,8 @@ public function purgePostOnCommentChange( $newstatus, $oldstatus, $comment ) {
 			case 'spam':
 			case 'unapproved':
 			case 'trash':
-				if ( 'approve' == $oldstatus ) {
-					if ( 1 == $nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
+				if ( 'approve' === $oldstatus ) {
+					if ( 1 === (int)$nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
 						$this->log( '* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...' );
 						$this->log( '* * * * *' );
 						$this->purgePost( $_post_id );
@@ -79,6 +79,7 @@ public function purgePostOnCommentChange( $newstatus, $oldstatus, $comment ) {
 	}
 
 	public function purgePost( $_ID ) {
+
 		global $nginx_helper_admin, $blog_id;
 
 		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
@@ -118,11 +119,11 @@ public function purgePost( $_ID ) {
 
 		$this->log( 'Function purgePost BEGIN ===' );
 
-		if ( 1 == $nginx_helper_admin->options['purge_homepage_on_edit'] ) {
+		if ( 1 === (int) $nginx_helper_admin->options['purge_homepage_on_edit'] ) {
 			$this->_purge_homepage();
 		}
 
-		if ( 'comment_post' == current_filter() || 'wp_set_comment_status' == current_filter() ) {
+		if ( 'comment_post' === current_filter() || 'wp_set_comment_status' === current_filter() ) {
 			$this->_purge_by_options(
 				$_ID, $blog_id, $nginx_helper_admin->options['purge_page_on_new_comment'], $nginx_helper_admin->options['purge_archive_on_new_comment'], $nginx_helper_admin->options['purge_archive_on_new_comment']
 			);
@@ -138,28 +139,33 @@ public function purgePost( $_ID ) {
 	}
 
 	private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_archive, $_purge_custom_taxa ) {
-		global $nginx_helper_admin;
 
 		$_post_type = get_post_type( $_post_ID );
 
 		if ( $_purge_page ) {
-			if ( 'post' == $_post_type || 'page' == $_post_type ) {
+
+			if ( 'post' === $_post_type || 'page' === $_post_type ) {
 				$this->log( 'Purging ' . $_post_type . ' ( id ' . $_post_ID . ', blog id ' . $blog_id . ' ) ' );
 			} else {
 				$this->log( "Purging custom post type '" . $_post_type . "' ( id " . $_post_ID . ', blog id ' . $blog_id . ' )' );
 			}
 
 			$this->purgeUrl( get_permalink( $_post_ID ) );
+
 		}
 
 		if ( $_purge_archive ) {
 
-			if ( function_exists( 'get_post_type_archive_link' ) && ( $_post_type_archive_link = get_post_type_archive_link( $_post_type ) ) ) {
+			$_post_type_archive_link = get_post_type_archive_link( $_post_type );
+
+			if ( function_exists( 'get_post_type_archive_link' ) && $_post_type_archive_link ) {
+
 				$this->log( 'Purging post type archive ( ' . $_post_type . ' )' );
 				$this->purgeUrl( $_post_type_archive_link );
+
 			}
 
-			if ( 'post' == $_post_type ) {
+			if ( 'post' === $_post_type ) {
 				$this->log( 'Purging date' );
 
 				$day   = get_the_time( 'd', $_post_ID );
@@ -177,47 +183,74 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 				}
 			}
 
-			if ( $categories = wp_get_post_categories( $_post_ID ) ) {
+			$categories = wp_get_post_categories( $_post_ID );
+
+			if ( ! is_wp_error( $categories ) ) {
+
 				$this->log( 'Purging category archives' );
 
 				foreach ( $categories as $category_id ) {
+
 					$this->log( 'Purging category ' . $category_id );
 					$this->purgeUrl( get_category_link( $category_id ) );
+
 				}
+
 			}
 
-			if ( $tags = get_the_tags( $_post_ID ) ) {
+			$tags = get_the_tags( $_post_ID );
+
+			if ( ! is_wp_error( $tags ) && ! empty( $tags ) ) {
+
 				$this->log( 'Purging tag archives' );
 
 				foreach ( $tags as $tag ) {
+
 					$this->log( 'Purging tag ' . $tag->term_id );
 					$this->purgeUrl( get_tag_link( $tag->term_id ) );
+
 				}
+
 			}
 
-			if ( $author_id = get_post( $_post_ID )->post_author ) {
+			$author_id = get_post( $_post_ID )->post_author;
+
+			if ( ! empty( $author_id ) ) {
+
 				$this->log( 'Purging author archive' );
 				$this->purgeUrl( get_author_posts_url( $author_id ) );
+
 			}
+
 		}
 
 		if ( $_purge_custom_taxa ) {
-			if ( $custom_taxonomies = get_taxonomies(
+
+			$custom_taxonomies = get_taxonomies(
 				array(
 					'public'   => true,
 					'_builtin' => false,
 				)
-			) ) {
+			);
+
+			if ( ! empty( $custom_taxonomies ) ) {
+
 				$this->log( 'Purging custom taxonomies related' );
+
 				foreach ( $custom_taxonomies as $taxon ) {
 
-					if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ) ) ) {
+					if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+
+						$terms = get_the_terms( $_post_ID, $taxon );
+
+						if ( ! is_wp_error( $terms ) && ! empty( $terms ) ) {
 
-						if ( $terms = get_the_terms( $_post_ID, $taxon ) ) {
 							foreach ( $terms as $term ) {
 								$this->purgeUrl( get_term_link( $term, $taxon ) );
 							}
+
 						}
+
 					} else {
 						$this->log( "Your built-in taxonomy '" . $taxon . "' has param '_builtin' set to false.", 'WARNING' );
 					}
@@ -232,7 +265,7 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 	 * Read more on how this works here:
 	 * https://www.digitalocean.com/community/tutorials/how-to-setup-fastcgi-caching-with-nginx-on-your-vps#purging-the-cache
 	 */
-	private function _delete_cache_file_for( $url ) {
+	public function _delete_cache_file_for( $url ) {
 
 		// Verify cache path is set
 		if ( ! defined( 'RT_WP_NGINX_HELPER_CACHE_PATH' ) ) {
@@ -271,7 +304,7 @@ private function _delete_cache_file_for( $url ) {
 		}
 	}
 
-	private function _do_remote_get( $url ) {
+	public function _do_remote_get( $url ) {
 
 		$response = wp_remote_get( $url );
 
@@ -473,24 +506,36 @@ private function _purge_post_custom_taxa( $_post_id ) {
 
 		$this->log( __( 'Purging post custom taxonomies related', 'nginx-helper' ) );
 
-		if ( $custom_taxonomies = get_taxonomies(
+		$custom_taxonomies = get_taxonomies(
 			array(
 				'public'   => true,
 				'_builtin' => false,
 			)
-		) ) {
+		);
+
+		if ( ! empty( $custom_taxonomies ) ) {
+
 			foreach ( $custom_taxonomies as $taxon ) {
+
 				$this->log( sprintf( '+ ' . __( "Purging custom taxonomy '%s'", 'nginx-helper' ), $taxon ) );
-				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ) ) ) {
-					if ( $terms = get_the_terms( $_post_id, $taxon ) ) {
+
+				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+
+					$terms = get_the_terms( $_post_id, $taxon );
+
+					if ( ! is_wp_error( $terms ) && ! empty( $terms ) && is_array( $terms ) ) {
+
 						foreach ( $terms as $term ) {
 							$this->purgeUrl( get_term_link( $term, $taxon ) );
 						}
+
 					}
+
 				} else {
 					$this->log( sprintf( '- ' . __( "Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper' ), $taxon ), 'WARNING' );
 				}
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No custom taxonomies', 'nginx-helper' ) );
 		}
@@ -502,13 +547,21 @@ private function _purge_all_categories() {
 
 		$this->log( __( 'Purging all categories', 'nginx-helper' ) );
 
-		if ( $_categories = get_categories() ) {
+		$_categories = get_categories();
+
+		if ( ! empty( $_categories ) ) {
+
 			foreach ( $_categories as $c ) {
+
 				$this->log( sprintf( __( "Purging category '%1\$s' ( id %2\$d )", 'nginx-helper' ), $c->name, $c->term_id ) );
 				$this->purgeUrl( get_category_link( $c->term_id ) );
+
 			}
+
 		} else {
+
 			$this->log( __( 'No categories archives', 'nginx-helper' ) );
+
 		}
 
 		return true;
@@ -518,40 +571,62 @@ private function _purge_all_posttags() {
 
 		$this->log( __( 'Purging all tags', 'nginx-helper' ) );
 
-		if ( $_posttags = get_tags() ) {
+		$_posttags = get_tags();
+
+		if ( ! empty( $_posttags ) ) {
+
 			foreach ( $_posttags as $t ) {
+
 				$this->log( sprintf( __( "Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper' ), $t->name, $t->term_id ) );
 				$this->purgeUrl( get_tag_link( $t->term_id ) );
+
 			}
+
 		} else {
 			$this->log( __( 'No tags archives', 'nginx-helper' ) );
 		}
 
 		return true;
+
 	}
 
 	private function _purge_all_customtaxa() {
 
 		$this->log( __( 'Purging all custom taxonomies', 'nginx-helper' ) );
 
-		if ( $custom_taxonomies = get_taxonomies(
+		$custom_taxonomies = get_taxonomies(
 			array(
 				'public'   => true,
 				'_builtin' => false,
 			)
-		) ) {
+		);
+
+		if ( ! empty( $custom_taxonomies ) ) {
+
 			foreach ( $custom_taxonomies as $taxon ) {
+
 				$this->log( sprintf( '+ ' . __( "Purging custom taxonomy '%s'", 'nginx-helper' ), $taxon ) );
-				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ) ) ) {
-					if ( $terms = get_terms( $taxon ) ) {
+
+				if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
+
+					$terms = get_terms( $taxon );
+
+					if ( ! is_wp_error( $terms ) && ! empty( $terms ) ) {
+
 						foreach ( $terms as $term ) {
+
 							$this->purgeUrl( get_term_link( $term, $taxon ) );
+
 						}
+
 					}
+
 				} else {
 					$this->log( sprintf( '- ' . __( "Your built-in taxonomy '%s' has param '_builtin' set to false.", 'nginx-helper' ), $taxon ), 'WARNING' );
 				}
+
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No custom taxonomies', 'nginx-helper' ) );
 		}
@@ -578,11 +653,17 @@ private function _purge_all_posts() {
 			'post_status' => 'publish',
 		);
 
-		if ( $_posts = get_posts( $args ) ) {
+		$_posts = get_posts( $args );
+
+		if ( ! empty( $_posts ) ) {
+
 			foreach ( $_posts as $p ) {
+
 				$this->log( sprintf( '+ ' . __( "Purging post id '%1\$d' ( post type '%2\$s' )", 'nginx-helper' ), $p->ID, $p->post_type ) );
 				$this->purgeUrl( get_permalink( $p->ID ) );
+
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No posts', 'nginx-helper' ) );
 		}
@@ -690,7 +771,7 @@ public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
 
 		$this->log( __( 'Term taxonomy edited or deleted', 'nginx-helper' ) );
 
-		if ( 'edit_term' == current_filter() && $term = get_term( $term_id, $taxon ) ) {
+		if ( 'edit_term' === current_filter() && $term = get_term( $term_id, $taxon ) ) {
 			$this->log( sprintf( __( "Term taxonomy '%1\$s' edited, (tt_id '%2\$d', term_id '%3\$d', taxonomy '%4\$s')", 'nginx-helper' ), $term->name, $tt_id, $term_id, $taxon ) );
 		} elseif ( 'delete_term' == current_filter() ) {
 			$this->log( sprintf( __( "A term taxonomy has been deleted from taxonomy '%1\$s', (tt_id '%2\$d', term_id '%3\$d')", 'nginx-helper' ), $taxon, $term_id, $tt_id ) );
diff --git a/admin/partials/nginx-helper-admin-display.php b/admin/partials/nginx-helper-admin-display.php
index 5d7d7cb9..7e2d9426 100644
--- a/admin/partials/nginx-helper-admin-display.php
+++ b/admin/partials/nginx-helper-admin-display.php
@@ -25,28 +25,29 @@
 			<div id="post-body-content">
 				<?php
 				/* Show settinhs tabs */
-				$current_setting_tab = ( isset( $_GET['tab'] ) && ! empty( $_GET['tab'] ) ) ? $_GET['tab'] : 'general';
+				$tab = filter_input( INPUT_GET, 'tab', FILTER_SANITIZE_STRING );
+				$current_setting_tab = ( ! empty( $tab ) ) ? $tab : 'general';
 
 				echo '<h2 class="nav-tab-wrapper">';
 				foreach ( $this->settings_tabs as $setting_tab => $setting_name ) {
 					$class = ( $setting_tab === $current_setting_tab ) ? ' nav-tab-active' : '';
-					echo '<a class="nav-tab' . $class . '" href="?page=nginx&tab=' . esc_attr( $setting_name['menu_slug'] ) . '">' . esc_html( $setting_name['menu_title'] ) . '</a>';
+					echo '<a class="nav-tab' . esc_attr( $class ) . '" href="?page=nginx&tab=' . esc_attr( $setting_name['menu_slug'] ) . '">' . esc_html( $setting_name['menu_title'] ) . '</a>';
 				}
 				echo '</h2>';
 
 				switch ( $current_setting_tab ) {
 					case 'general':
-						include 'nginx-helper-general-options.php';
+						include plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-general-options.php';
 						break;
 					case 'support':
-						include 'nginx-helper-support-options.php';
+						include plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-support-options.php';
 						break;
 				}
 				?>
 			</div> <!-- End of #post-body-content -->
 			<div id="postbox-container-1" class="postbox-container">
 				<?php
-					require 'nginx-helper-sidebar-display.php';
+					require plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-sidebar-display.php';
 				?>
 			</div> <!-- End of #postbox-container-1 -->
 		</div> <!-- End of #post-body -->
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index ae1ebfd8..5bd38583 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -87,10 +87,10 @@
 							<input type="radio" value="enable_fastcgi" id="cache_method_fastcgi" name="cache_method" <?php checked( $nginx_helper_settings['cache_method'], 'enable_fastcgi' ); ?> />
 							<label for="cache_method_fastcgi">
 								<?php
-								printf(
-									__( 'nginx Fastcgi cache (<a target="_blank" href="%s" title="External settings for nginx">requires external settings for nginx</a>)', 'nginx-helper' ),
-									esc_url( $nginx_setting_link )
-								);
+									printf(
+										wp_kses( '%1$s (<a target="_blank" href="%2$s" title="%3$s">%4$s</a>)', array( 'strong' => array(), 'a' => array( 'href' => array(), 'title' => array() ) ) ),
+										esc_html__( 'nginx Fastcgi cache', 'nginx-helper' ), esc_url( $nginx_setting_link ), esc_attr__( 'External settings for nginx', 'nginx-helper' ), esc_html__( 'requires external settings for nginx', 'nginx-helper' )
+									);
 								?>
 							</label>
 						</td>
@@ -126,12 +126,18 @@
 										<input type="radio" value="get_request" id="purge_method_get_request" name="purge_method" <?php checked( $nginx_helper_settings['purge_method'], 'get_request' ); ?>>
 										&nbsp;
 										<?php
-											_e( 'Using a GET request to <strong>PURGE/url</strong> (Default option)', 'nginx-helper' );
+											printf(
+												wp_kses( '%1$s  <strong>PURGE/url</strong> %2$s', array( 'strong' => array() ) ),
+												esc_html__( 'Using a GET request to', 'nginx-helper' ), esc_html__( '(Default option)', 'nginx-helper' )
+											);
 										?>
 										<br />
 										<small>
 											<?php
-												_e( 'Uses the <strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge</a></strong> module. ', 'nginx-helper' );
+												printf(
+													wp_kses( '%1$s <strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge</a></strong> %2$s.', array( 'strong' => array(), 'a' => array( 'href' => array() ) ) ),
+													esc_html__( 'Uses the', 'nginx-helper' ), esc_html__( 'module', 'nginx-helper' )
+												);
 											?>
 										</small>
 									</label>
@@ -145,7 +151,10 @@
 										<br />
 										<small>
 											<?php
-												_e( 'Checks for matching cache file in <strong>RT_WP_NGINX_HELPER_CACHE_PATH</strong>. Does not require any other modules. Requires that the cache be stored on the same server as WordPress. You must also be using the default nginx cache options (levels=1:2) and (fastcgi_cache_key "$scheme$request_method$host$request_uri"). ', 'nginx-helper' );
+												printf(
+													wp_kses( '%1$s<strong>RT_WP_NGINX_HELPER_CACHE_PATH</strong>. %2$s', array( 'strong' => array(), ) ),
+													esc_html__( 'Checks for matching cache file in ', 'nginx-helper' ), esc_html__( 'Does not require any other modules. Requires that the cache be stored on the same server as WordPress. You must also be using the default nginx cache options (levels=1:2) and (fastcgi_cache_key "$scheme$request_method$host$request_uri").', 'nginx-helper' )
+												);
 											?>
 										</small>
 									</label>
@@ -206,7 +215,10 @@
 									<input type="checkbox" value="1" id="purge_homepage_on_edit" name="purge_homepage_on_edit" <?php checked( $nginx_helper_settings['purge_homepage_on_edit'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>post</strong> (or page/custom post) is <strong>modified</strong> or <strong>added</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -224,7 +236,10 @@
 									<input type="checkbox" value="1" id="purge_homepage_on_del" name="purge_homepage_on_del" <?php checked( $nginx_helper_settings['purge_homepage_on_del'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>published post</strong> (or page/custom post) is <strong>trashed</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -252,7 +267,10 @@
 									<input type="checkbox" value="1" id="purge_page_on_mod" name="purge_page_on_mod" <?php checked( $nginx_helper_settings['purge_page_on_mod'], 1 ); ?>>
 									&nbsp;
 									<?php
-										_e( 'when a <strong>post</strong> is <strong>published</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'published', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -270,7 +288,10 @@
 									<input type="checkbox" value="1" id="purge_page_on_new_comment" name="purge_page_on_new_comment" <?php checked( $nginx_helper_settings['purge_page_on_new_comment'], 1 ); ?>>
 									&nbsp;
 									<?php
-										_e( 'when a <strong>comment</strong> is <strong>approved/published</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -288,7 +309,10 @@
 									<input type="checkbox" value="1" id="purge_page_on_deleted_comment" name="purge_page_on_deleted_comment" <?php checked( $nginx_helper_settings['purge_page_on_deleted_comment'], 1 ); ?>>
 									&nbsp;
 									<?php
-										_e( 'when a <strong>comment</strong> is <strong>unapproved/deleted</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -318,7 +342,10 @@
 									<input type="checkbox" value="1" id="purge_archive_on_edit" name="purge_archive_on_edit" <?php checked( $nginx_helper_settings['purge_archive_on_edit'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>post</strong> (or page/custom post) is <strong>modified</strong> or <strong>added</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -336,7 +363,10 @@
 									<input type="checkbox" value="1" id="purge_archive_on_del" name="purge_archive_on_del"<?php checked( $nginx_helper_settings['purge_archive_on_del'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>published post</strong> (or page/custom post) is <strong>trashed</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -355,7 +385,10 @@
 									<input type="checkbox" value="1" id="purge_archive_on_new_comment" name="purge_archive_on_new_comment" <?php checked( $nginx_helper_settings['purge_archive_on_new_comment'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>comment</strong> is <strong>approved/published</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -373,7 +406,10 @@
 									<input type="checkbox" value="1" id="purge_archive_on_deleted_comment" name="purge_archive_on_deleted_comment" <?php checked( $nginx_helper_settings['purge_archive_on_deleted_comment'], 1 ); ?> />
 									&nbsp;
 									<?php
-										_e( 'when a <strong>comment</strong> is <strong>unapproved/deleted</strong>.', 'nginx-helper' );
+										printf(
+											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
+											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+										);
 									?>
 								</label>
 								<br />
@@ -387,7 +423,7 @@
 							<h4><?php esc_html_e( 'Custom Purge URL:', 'nginx-helper' ); ?></h4>
 						</th>
 						<td>
-							<textarea rows="5"class="rt-purge_url" id="purge_url" name="purge_url"><?php echo $nginx_helper_admin->options['purge_url']; ?></textarea>
+							<textarea rows="5"class="rt-purge_url" id="purge_url" name="purge_url"><?php echo esc_url( $nginx_helper_admin->options['purge_url'] ); ?></textarea>
 							<p class="description">
 								Add one URL per line. URL should not contain domain name.
 								<br>
@@ -453,8 +489,8 @@
 						<p>
 							<?php
 							printf(
-								__( 'Can\'t write on map file.<br /><br />Check you have write permission on <strong>%s</strong>', 'nginx-helper' ),
-								$log_path . 'map.conf'
+								wp_kses( '%1$s<br /><br />%2$s<strong>%3$s</strong>', array( 'br' => array(), 'strong' => array(), ) ),
+								esc_html__( 'Can\'t write on map file.', 'nginx-helper' ), esc_html__( 'Check you have write permission on ', 'nginx-helper' ), esc_url( $log_path . 'map.conf' )
 							);
 							?>
 						</p>
@@ -466,19 +502,25 @@
 					<tr>
 						<th>
 						<?php
-							_e( 'Nginx Map path to include in nginx settings<br /><small>(recommended)</small>', 'nginx-helper' );
+						printf(
+							wp_kses( '%1$s<br /><small>%2$s</small>', array( 'br' => array(), 'small' => array(), ) ),
+							esc_html__( 'Nginx Map path to include in nginx settings', 'nginx-helper' ), esc_html__( '(recommended)', 'nginx-helper' )
+						);
 						?>
 						</th>
 						<td>
 							<pre>
-							<?php echo $log_path . 'map.conf'; ?>
+							<?php echo esc_url( $log_path . 'map.conf' ); ?>
 							</pre>
 						</td>
 					</tr>
 					<tr>
 						<th>
 							<?php
-							_e( 'Or,<br />Text to manually copy and paste in nginx settings<br /><small>(if your network is small and new sites are not added frequently)</small>', 'nginx-helper' );
+							printf(
+								wp_kses( '%1$s<br />%2$s<br /><small>%3$s</small>', array( 'br' => array(), 'small' => array(), ) ),
+								esc_html__( 'Or,', 'nginx-helper' ), esc_html__( 'Text to manually copy and paste in nginx settings', 'nginx-helper' ), esc_html__( '(if your network is small and new sites are not added frequently)', 'nginx-helper' )
+							);
 							?>
 						</th>
 						<td>
@@ -512,8 +554,8 @@
 					<p>
 					<?php
 						printf(
-							__( 'Can\'t write on log file.<br /><br />Check you have write permission on <strong>%s</strong>', 'nginx-helper' ),
-							$log_path . 'nginx.log'
+							wp_kses( '%1$s<br /><br />%2$s<strong>%3$s</strong>', array( 'br' => array(), 'strong' => array(), ) ),
+							esc_html__( 'Can\'t write on log file.', 'nginx-helper' ), esc_html__( 'Check you have write permission on ', 'nginx-helper' ), esc_url( $log_path . 'nginx.log' )
 						);
 					?>
 					</p>
@@ -532,7 +574,7 @@
 						</th>
 						<td>
 							<code>
-								<?php echo $log_path . 'nginx.log'; ?>
+								<?php echo esc_url( $log_path . 'nginx.log' ); ?>
 							</code>
 						</td>
 					</tr>
@@ -543,7 +585,7 @@
 							</label>
 						</th>
 						<td>
-							<a target="_blank" href="<?php echo $log_url . 'nginx.log'; ?>">
+							<a target="_blank" href="<?php echo esc_url( $log_url . 'nginx.log' ); ?>">
 								<?php esc_html_e( 'Log', 'nginx-helper' ); ?>
 							</a>
 						</td>
@@ -576,7 +618,7 @@
 							if ( $error_log_filesize ) {
 								?>
 								<p class="error fade" style="display: block;">
-								<?php echo $error_log_filesize; ?>
+								<?php echo esc_html( $error_log_filesize ); ?>
 								</p>
 								<?php
 							}
diff --git a/admin/partials/nginx-helper-sidebar-display.php b/admin/partials/nginx-helper-sidebar-display.php
index 8a0c4317..5670bf88 100644
--- a/admin/partials/nginx-helper-sidebar-display.php
+++ b/admin/partials/nginx-helper-sidebar-display.php
@@ -34,13 +34,10 @@
 		<p>
 			<?php
 				printf(
-					__(
-						'Please use our <a href="%s">free support forum</a>.',
-						'nginx-helper'
-					),
-					'http://rtcamp.com/support/forum/wordpress-nginx/'
+					wp_kses( "%1$s <a href='%2$s'>%3$s</a>.", array( 'a' => array( 'href' => array() ) ) ),
+					esc_html__( 'Please use our', 'nginx-helper' ), esc_url( 'http://rtcamp.com/support/forum/wordpress-nginx/' ), esc_html__( 'free support forum', 'nginx-helper' )
 				);
-				?>
+			?>
 		</p>
 	</div>
 </div>
diff --git a/includes/class-nginx-helper.php b/includes/class-nginx-helper.php
index 09061426..fd7d228d 100644
--- a/includes/class-nginx-helper.php
+++ b/includes/class-nginx-helper.php
@@ -92,7 +92,6 @@ public function __construct() {
 		$this->load_dependencies();
 		$this->set_locale();
 		$this->define_admin_hooks();
-		// $this->define_public_hooks();
 	}
 
 	/**
@@ -139,7 +138,6 @@ private function load_dependencies() {
 		 * The class responsible for defining all actions that occur in the public-facing
 		 * side of the site.
 		 */
-		// require_once plugin_dir_path( dirname( __FILE__ ) ) . 'public/class-nginx-helper-public.php';
 		$this->loader = new Nginx_Helper_Loader();
 
 	}
@@ -290,7 +288,7 @@ public function required_wp_version() {
 
 		$wp_ok = version_compare( $wp_version, $this->minimum_wp, '>=' );
 
-		if ( ( false == $wp_ok ) ) {
+		if ( false === $wp_ok ) {
 			add_action( 'admin_notices', array( &$this, 'display_notices' ) );
 			add_action( 'network_admin_notices', array( &$this, 'display_notices' ) );
 			return false;
@@ -308,7 +306,10 @@ public function display_notices() {
 		<p>
 			<strong>
 				<?php
-					echo __( 'Sorry, Nginx Helper requires WordPress ' . $this->minimum_WP . ' or higher', 'nginx-helper' );
+				printf(
+					/* translators: %s is Minimum WP version. */
+					esc_html__( 'Sorry, Nginx Helper requires WordPress %s or higher', 'nginx-helper' ), esc_html( $this->minimum_WP )
+				);
 				?>
 			</strong>
 		</p>
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 00000000..01c21a0f
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<ruleset name="WordPress Coding Standards">
+
+    <!-- Set a description for this ruleset. -->
+    <description>A custom set of code standard rules to check for Nginx helper plugin.</description>
+
+    <!-- Pass some flags to PHPCS:
+         p flag: Show progress of the run.
+         s flag: Show sniff codes in all reports.
+    -->
+    <arg value="ps"/>
+
+    <!-- Strip the filepaths down to the relevant bit. -->
+    <arg name="basepath" value="./"/>
+
+    <!-- Check up to 8 files simultanously. -->
+    <arg name="parallel" value="8"/>
+
+    <!-- Only check the PHP, CSS and SCSS files. JS files are checked separately with JSCS and JSHint. -->
+    <arg name="extensions" value="php,css,scss/css"/>
+
+    <!-- Check all files in this directory and the directories below it. -->
+    <file>.</file>
+
+    <!-- Exclude folders. -->
+    <exclude-pattern>*/languages/*</exclude-pattern>
+
+    <!-- Include the WordPress standard. -->
+    <rule ref="WordPress-VIP-Go">
+        <exclude name="WordPress.Files.FileName.UnderscoresNotAllowed" />
+        <exclude name="WordPress.NamingConventions.ValidVariableName.NotSnakeCase" />
+        <exclude name="WordPress.NamingConventions.ValidVariableName.NotSnakeCaseMemberVar" />
+    </rule>
+
+    <rule ref="PHPCompatibility"/>
+    <config name="testVersion" value="7.0-"/>
+
+</ruleset>
\ No newline at end of file

From cfccc36841afb28c31d6cd770093a5d9a2e5a43c Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Fri, 12 Oct 2018 14:38:12 +0530
Subject: [PATCH 2/8] phpcs error resolved, code refactoring and added new
 functionalities from master

---
 README.md                                     |  37 +-
 admin/class-fastcgi-purger.php                |  18 +-
 admin/class-nginx-helper-admin.php            | 194 +++++--
 admin/class-phpredis-purger.php               |  24 +-
 admin/class-predis-purger.php                 |  29 +-
 admin/class-purger.php                        | 536 ++++++++++++++----
 admin/index.php                               |   9 +-
 admin/js/nginx-helper-admin.js                |  19 +-
 admin/partials/nginx-helper-admin-display.php |  14 +-
 .../partials/nginx-helper-general-options.php |  73 ++-
 .../partials/nginx-helper-sidebar-display.php |   2 +-
 includes/class-nginx-helper-activator.php     |  15 +-
 includes/class-nginx-helper-deactivator.php   |   1 +
 includes/class-nginx-helper-i18n.php          |   4 +-
 includes/class-nginx-helper-loader.php        |  50 +-
 includes/class-nginx-helper.php               |  62 +-
 includes/index.php                            |   9 +-
 index.php                                     |   9 +-
 nginx-helper.php                              |   4 +-
 phpcs.xml                                     |  35 +-
 readme.txt                                    |  25 +-
 uninstall.php                                 |   1 -
 wp-cli.php                                    |  13 +-
 23 files changed, 892 insertions(+), 291 deletions(-)

diff --git a/README.md b/README.md
index 651a7add..ec648177 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,13 @@
 # Nginx Helper #
 **Contributors:** rtcamp, rahul286, saurabhshukla, manishsongirkar36, faishal, desaiuditd, darren-slatten, jk3us, daankortenbach, telofy, pjv, llonchj, jinnko, weskoop, bcole808, gungeekatx, rohanveer, chandrapatel, gagan0123, ravanh, michaelbeil, samedwards, niwreg, entr, nuvoPoint
 
-**Tags:** nginx, cache, purge, nginx map, nginx cache, maps, fastcgi, proxy, redis, redis-cache, rewrite, permalinks  
-**Requires at least:** 3.0  
-**Tested up to:** 4.9.5
-**Stable tag:** 1.9.11
-**License:** GPLv2 or later (of-course)  
-**License URI:** http://www.gnu.org/licenses/gpl-2.0.html  
-**Donate Link:** http://rtcamp.com/donate/  
+**Tags:** nginx, cache, purge, nginx map, nginx cache, maps, fastcgi, proxy, redis, redis-cache, rewrite, permalinks
+**Requires at least:** 3.0
+**Tested up to:** 4.9.8
+**Stable tag:** 1.9.12
+**License:** GPLv2 or later (of-course)
+**License URI:** http://www.gnu.org/licenses/gpl-2.0.html
+**Donate Link:** http://rtcamp.com/donate/
 
 Cleans nginx's fastcgi/proxy cache or redis-cache whenever a post is edited/published. Also does a few more things.
 
@@ -94,6 +94,21 @@ To purge a page immediately, follow these instructions:
 * Needless to say, this won't work, if you have a page or taxonomy called 'purge'.
 
 
+### FAQ - Nginx Redis Cache ###
+
+**Q. Can I override the redis hostname, port and prefix?**
+
+Yes, you can force override the redis hostname, port or prefix by defining constant in wp-config.php. For example:
+
+```
+define( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME', '10.0.0.1' );
+
+define( 'RT_WP_NGINX_HELPER_REDIS_PORT', '6000' );
+
+define( 'RT_WP_NGINX_HELPER_REDIS_PREFIX', 'page-cache:' );
+```
+
+
 ### FAQ - Nginx Map ###
 
 **Q. My multisite already uses `WPMU_ACCEL_REDIRECT`. Do I still need Nginx Map?**
@@ -119,6 +134,9 @@ Please post your problem in [our free support forum](http://community.rtcamp.com
 
 ## Changelog ##
 
+### 1.9.12 ###
+* Allow override Redis host/port/prefix by defining constant in wp-config.php [#152](https://github.com/rtCamp/nginx-helper/pull/152) - by [vincent-lu](https://github.com/vincent-lu)
+
 ### 1.9.11 ###
 * Fixed issue where permalinks without trailing slash does not purging [#124](https://github.com/rtCamp/nginx-helper/issues/124) - by Patrick
 * Check whether role exist or not before removing capability. [#134](https://github.com/rtCamp/nginx-helper/pull/134) - by [1gor](https://github.com/1gor)
@@ -349,6 +367,5 @@ Fix url escaping [#82](https://github.com/rtCamp/nginx-helper/pull/82) - by
 
 ## Upgrade Notice ##
 
-### 1.9.11 ###
-* Fixed issue where permalinks without trailing slash does not purging [#124](https://github.com/rtCamp/nginx-helper/issues/124) - by Patrick
-* Check whether role exist or not before removing capability. [#134](https://github.com/rtCamp/nginx-helper/pull/134) - by [1gor](https://github.com/1gor)
+### 1.9.12 ###
+* Allow override Redis host/port/prefix by defining constant in wp-config.php [#152](https://github.com/rtCamp/nginx-helper/pull/152) - by [vincent-lu](https://github.com/vincent-lu)
diff --git a/admin/class-fastcgi-purger.php b/admin/class-fastcgi-purger.php
index 5b315325..1489f953 100644
--- a/admin/class-fastcgi-purger.php
+++ b/admin/class-fastcgi-purger.php
@@ -24,7 +24,7 @@ class FastCGI_Purger extends Purger {
 	 * @param string $url URL.
 	 * @param bool   $feed Weather it is feed or not.
 	 */
-	public function purgeUrl( $url, $feed = true ) {
+	public function purge_url( $url, $feed = true ) {
 
 		global $nginx_helper_admin;
 
@@ -49,16 +49,17 @@ public function purgeUrl( $url, $feed = true ) {
 				$this->_delete_cache_file_for( $_url_purge );
 
 				if ( $feed ) {
+
 					$feed_url = rtrim( $_url_purge_base, '/' ) . '/feed/';
 					$this->_delete_cache_file_for( $feed_url );
 					$this->_delete_cache_file_for( $feed_url . 'atom/' );
 					$this->_delete_cache_file_for( $feed_url . 'rdf/' );
+
 				}
 				break;
 
 			case 'get_request':
-				// Go to default case
-
+				// Go to default case.
 			default:
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'] . '/purge' . $parse['path'];
 				$_url_purge      = $_url_purge_base;
@@ -86,7 +87,7 @@ public function purgeUrl( $url, $feed = true ) {
 	/**
 	 * Function to custom purge urls.
 	 */
-	public function customPurgeUrls() {
+	public function custom_purge_urls() {
 
 		global $nginx_helper_admin;
 
@@ -95,7 +96,7 @@ public function customPurgeUrls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed
+		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, false );
 
 		switch ( $nginx_helper_admin->options['purge_method'] ) {
@@ -123,8 +124,7 @@ public function customPurgeUrls() {
 				break;
 
 			case 'get_request':
-				// Go to default case
-
+				// Go to default case.
 			default:
 				$_url_purge_base = $parse['scheme'] . '://' . $parse['host'] . '/purge';
 
@@ -154,9 +154,9 @@ public function customPurgeUrls() {
 	/**
 	 * Purge everything.
 	 */
-	public function purgeAll() {
+	public function purge_all() {
 
-		$this->unlinkRecursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
+		$this->unlink_recursive( RT_WP_NGINX_HELPER_CACHE_PATH, false );
 		$this->log( '* * * * *' );
 		$this->log( '* Purged Everything!' );
 		$this->log( '* * * * *' );
diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index f240dfb0..e9f831fd 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -77,6 +77,7 @@ public function __construct( $plugin_name, $version ) {
 
 		$this->plugin_name = $plugin_name;
 		$this->version     = $version;
+
 		/**
 		  * Define settings tabs
 		  */
@@ -94,12 +95,15 @@ public function __construct( $plugin_name, $version ) {
 		);
 
 		$this->options = $this->nginx_helper_settings();
+
 	}
 
 	/**
 	 * Register the stylesheets for the admin area.
 	 *
 	 * @since    2.0.0
+	 *
+	 * @param string $hook Hook.
 	 */
 	public function enqueue_styles( $hook ) {
 
@@ -115,17 +119,21 @@ public function enqueue_styles( $hook ) {
 		 * class.
 		 */
 
-		if ( 'settings_page_nginx' != $hook ) {
+		if ( 'settings_page_nginx' !== $hook ) {
 			return;
 		}
+
 		wp_enqueue_style( $this->plugin_name . '-icons', plugin_dir_url( __FILE__ ) . 'icons/css/nginx-fontello.css', array(), $this->version, 'all' );
 		wp_enqueue_style( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'css/nginx-helper-admin.css', array(), $this->version, 'all' );
+
 	}
 
 	/**
 	 * Register the JavaScript for the admin area.
 	 *
 	 * @since    2.0.0
+	 *
+	 * @param string $hook Hook.
 	 */
 	public function enqueue_scripts( $hook ) {
 
@@ -141,10 +149,12 @@ public function enqueue_scripts( $hook ) {
 		 * class.
 		 */
 
-		if ( 'settings_page_nginx' != $hook ) {
+		if ( 'settings_page_nginx' !== $hook ) {
 			return;
 		}
+
 		wp_enqueue_script( $this->plugin_name, plugin_dir_url( __FILE__ ) . 'js/nginx-helper-admin.js', array( 'jquery' ), $this->version, false );
+
 	}
 
 	/**
@@ -155,6 +165,7 @@ public function enqueue_scripts( $hook ) {
 	public function nginx_helper_admin_menu() {
 
 		if ( is_multisite() ) {
+
 			add_submenu_page(
 				'settings.php',
 				__( 'Nginx Helper', 'nginx-helper' ),
@@ -163,7 +174,9 @@ public function nginx_helper_admin_menu() {
 				'nginx',
 				array( &$this, 'nginx_helper_setting_page' )
 			);
+
 		} else {
+
 			add_submenu_page(
 				'options-general.php',
 				__( 'Nginx Helper', 'nginx-helper' ),
@@ -172,10 +185,18 @@ public function nginx_helper_admin_menu() {
 				'nginx',
 				array( &$this, 'nginx_helper_setting_page' )
 			);
+
 		}
+
 	}
 
+	/**
+	 * Function to add toolbar purge link.
+	 *
+	 * @param object $wp_admin_bar Admin bar object.
+	 */
 	public function nginx_helper_toolbar_purge_link( $wp_admin_bar ) {
+
 		if ( ! current_user_can( 'manage_options' ) ) {
 			return;
 		}
@@ -186,7 +207,9 @@ public function nginx_helper_toolbar_purge_link( $wp_admin_bar ) {
 				'nginx_helper_urls'   => 'all',
 			)
 		);
+
 		$nonced_url = wp_nonce_url( $purge_url, 'nginx_helper-purge_all' );
+
 		$wp_admin_bar->add_menu(
 			array(
 				'id'    => 'nginx-helper-purge-all',
@@ -195,6 +218,7 @@ public function nginx_helper_toolbar_purge_link( $wp_admin_bar ) {
 				'meta'  => array( 'title' => __( 'Purge Cache', 'nginx-helper' ) ),
 			)
 		);
+
 	}
 
 	/**
@@ -205,7 +229,7 @@ public function nginx_helper_toolbar_purge_link( $wp_admin_bar ) {
 	 * @since    2.0.0
 	 */
 	public function nginx_helper_setting_page() {
-		include 'partials/nginx-helper-admin-display.php';
+		include plugin_dir_path(__FILE__ ) . 'partials/nginx-helper-admin-display.php';
 	}
 
 	/**
@@ -215,6 +239,7 @@ public function nginx_helper_setting_page() {
 	 * @return array
 	 */
 	public function nginx_helper_default_settings() {
+
 		return array(
 			'enable_purge'                     => 0,
 			'cache_method'                     => '',
@@ -240,6 +265,7 @@ public function nginx_helper_default_settings() {
 			'redis_prefix'                     => 'nginx-cache:',
 			'purge_url'                        => '',
 		);
+
 	}
 
 	/**
@@ -248,12 +274,31 @@ public function nginx_helper_default_settings() {
 	 * @since    2.0.0
 	 */
 	public function nginx_helper_settings() {
+
+		$options = get_site_option( 'rt_wp_nginx_helper_options', array( 'redis_hostname' => '', 'redis_port' => '', 'redis_prefix' => '' ) );
+
+		$options['redis_hostname'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? RT_WP_NGINX_HELPER_REDIS_HOSTNAME : $options['redis_hostname'];
+		$options['redis_port']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? RT_WP_NGINX_HELPER_REDIS_PORT : $options['redis_port'];
+		$options['redis_prefix']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? RT_WP_NGINX_HELPER_REDIS_PREFIX : $options['redis_prefix'];
+
+		$options['redis_hostname_readonly'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? true : false;
+		$options['redis_port_readonly']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? true : false;
+		$options['redis_prefix_readonly']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? true : false;
+
 		return wp_parse_args(
-			get_site_option( 'rt_wp_nginx_helper_options', array() ),
+			$options,
 			$this->nginx_helper_default_settings()
 		);
+
 	}
 
+	/**
+	 * Nginx helper setting link function.
+	 *
+	 * @param array $links links.
+	 *
+	 * @return mixed
+	 */
 	public function nginx_helper_settings_link( $links ) {
 
 		if ( is_network_admin() ) {
@@ -264,7 +309,9 @@ public function nginx_helper_settings_link( $links ) {
 
 		$settings_link = '<a href="' . admin_url( $setting_page . '?page=nginx' ) . '">' . __( 'Settings', 'nginx-helper' ) . '</a>';
 		array_unshift( $links, $settings_link );
+
 		return $links;
+
 	}
 
 	/**
@@ -301,36 +348,48 @@ public function functional_asset_url() {
 	 * @since     2.0.0
 	 */
 	public function nginx_helper_get_feeds() {
-		// Get RSS Feed(s)
+
+		// Get RSS Feed(s).
 		require_once ABSPATH . WPINC . '/feed.php';
-		$maxitems = 0;
+
+		$maxitems  = 0;
+		$rss_items = array();
+
 		// Get a SimplePie feed object from the specified feed source.
-		$rss = fetch_feed( 'http://rtcamp.com/blog/feed/' );
-		if ( ! is_wp_error( $rss ) ) { // Checks that the object is created correctly
+		$rss = fetch_feed( 'https://rtcamp.com/blog/feed/' );
+
+		if ( ! is_wp_error( $rss ) ) { // Checks that the object is created correctly.
+
 			// Figure out how many total items there are, but limit it to 5.
 			$maxitems = $rss->get_item_quantity( 5 );
 			// Build an array of all the items, starting with element 0 (first element).
 			$rss_items = $rss->get_items( 0, $maxitems );
+
 		}
 		?>
 		<ul role="list">
-		<?php
-		if ( $maxitems === 0 ) {
-			echo '<li role="listitem">' . esc_html_e( 'No items', 'nginx-helper' ) . '.</li>';
-		} else {
-			// Loop through each feed item and display each item as a hyperlink.
-			foreach ( $rss_items as $item ) {
-				?>
-					<li role="listitem">
-						<a href='<?php echo esc_url( $item->get_permalink() ); ?>' title='<?php echo esc_attr_e( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ); ?>'><?php echo esc_html( $item->get_title() ); ?></a>
-					</li>
-				<?php
+			<?php
+			if ( 0 === $maxitems ) {
+				echo '<li role="listitem">' . esc_html_e( 'No items', 'nginx-helper' ) . '.</li>';
+			} else {
+
+				// Loop through each feed item and display each item as a hyperlink.
+				foreach ( $rss_items as $item ) {
+					?>
+						<li role="listitem">
+							<a href='<?php echo esc_url( $item->get_permalink() ); ?>' title='<?php echo esc_attr_e( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ); ?>'>
+								<?php echo esc_html( $item->get_title() ); ?>
+							</a>
+						</li>
+					<?php
+				}
+
 			}
-		}
-		?>
+			?>
 		</ul>
 		<?php
 		die();
+
 	}
 
 	/**
@@ -338,7 +397,7 @@ public function nginx_helper_get_feeds() {
 	 */
 	public function add_timestamps() {
 
-		if ( is_admin() || $this->options['enable_purge'] != 1 || $this->options['enable_stamp'] != 1 ) {
+		if ( is_admin() || (int) $this->options['enable_purge'] !== 1 || (int) $this->options['enable_stamp'] !== 1 ) {
 			return;
 		}
 
@@ -358,9 +417,11 @@ public function add_timestamps() {
 		if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
 			return;
 		}
+
 		if ( defined( 'DOING_CRON' ) && DOING_CRON ) {
 			return;
 		}
+
 		if ( defined( 'WP_CLI' ) && WP_CLI ) {
 			return;
 		}
@@ -371,14 +432,15 @@ public function add_timestamps() {
 				"-->\n" .
 				'<!--Visit http://wordpress.org/extend/plugins/nginx-helper/faq/ for more details-->';
 
-		echo $timestamps;
+		echo wp_kses( $timestamps, array() );
 
 	}
 
 	/**
 	 * Get map
 	 *
-	 * @global type $wpdb
+	 * @global object $wpdb
+	 *
 	 * @return string
 	 */
 	public function get_map() {
@@ -388,19 +450,24 @@ public function get_map() {
 		}
 
 		if ( is_multisite() ) {
+
 			global $wpdb;
 
-			$rt_all_blogs = $wpdb->get_results(
-				$wpdb->prepare(
-					'SELECT blog_id, domain, path FROM ' . $wpdb->blogs . " WHERE site_id = %d AND archived = '0' AND mature = '0' AND spam = '0' AND deleted = '0'",
-					$wpdb->siteid
-				)
+			$args = array(
+				'site_id'  => $wpdb->siteid,
+				'archived' => '0',
+				'mature'   => '0',
+				'spam'     => '0',
+				'deleted'  => '0',
 			);
 
+			$rt_all_blogs = get_sites( $args );
+
 			$wpdb->dmtable = $wpdb->base_prefix . 'domain_mapping';
 
 			$rt_domain_map_sites = '';
-			if ( $wpdb->get_var( "SHOW TABLES LIKE '{$wpdb->dmtable}'" ) == $wpdb->dmtable ) {
+
+			if ( $wpdb->get_var( "SHOW TABLES LIKE '{$wpdb->dmtable}'" ) === $wpdb->dmtable ) { // phpcs:ignore
 				$rt_domain_map_sites = $wpdb->get_results( "SELECT blog_id, domain FROM {$wpdb->dmtable} ORDER BY id DESC" );
 			}
 
@@ -408,21 +475,29 @@ public function get_map() {
 			$rt_nginx_map_array = array();
 
 			if ( $rt_all_blogs ) {
+
 				foreach ( $rt_all_blogs as $blog ) {
+
 					if ( 'yes' === SUBDOMAIN_INSTALL ) {
 						$rt_nginx_map_array[ $blog->domain ] = $blog->blog_id;
 					} else {
+
 						if ( 1 !== $blog->blog_id ) {
 							$rt_nginx_map_array[ $blog->path ] = $blog->blog_id;
 						}
+
 					}
+
 				}
+
 			}
 
 			if ( $rt_domain_map_sites ) {
+
 				foreach ( $rt_domain_map_sites as $site ) {
 					$rt_nginx_map_array[ $site->domain ] = $site->blog_id;
 				}
+
 			}
 
 			foreach ( $rt_nginx_map_array as $domain => $domain_id ) {
@@ -430,7 +505,9 @@ public function get_map() {
 			}
 
 			return $rt_nginx_map;
+
 		}
+
 	}
 
 	/**
@@ -454,13 +531,15 @@ public function update_map() {
 	/**
 	 * Purge url when post status is changed.
 	 *
-	 * @global type $blog_id
-	 * @global object $nginx_purger
-	 * @param string $new_status
-	 * @param string $old_status
-	 * @param object $post
+	 * @global string $blog_id Blog id.
+	 * @global object $nginx_purger Nginx purger variable.
+	 *
+	 * @param string $new_status New status.
+	 * @param string $old_status Ols status.
+	 * @param object $post Post object.
 	 */
 	public function set_future_post_option_on_future_status( $new_status, $old_status, $post ) {
+
 		global $blog_id, $nginx_purger;
 
 		if ( ! $this->options['enable_purge'] ) {
@@ -469,32 +548,39 @@ public function set_future_post_option_on_future_status( $new_status, $old_statu
 
 		$purge_status = array( 'publish', 'future' );
 
-		if ( in_array( $old_status, $purge_status ) || in_array( $new_status, $purge_status ) ) {
+		if ( in_array( $old_status, $purge_status, true ) || in_array( $new_status, $purge_status, true ) ) {
+
 			$nginx_purger->log( 'Purge post on transition post STATUS from ' . $old_status . ' to ' . $new_status );
-			$nginx_purger->purgePost( $post->ID );
+			$nginx_purger->purge_post( $post->ID );
+
 		}
 
-		if ( 'future' == $new_status ) {
-			if ( $post && 'future' == $post->post_status &&
-			   ( ( 'post' == $post->post_type || 'page' == $post->post_type ) ||
+		if ( 'future' === $new_status ) {
+
+			if ( $post && 'future' === $post->post_status &&
+			   ( ( 'post' === $post->post_type || 'page' === $post->post_type ) ||
 			   ( isset( $this->options['custom_post_types_recognized'] ) &&
-			   in_array( $post->post_type, $this->options['custom_post_types_recognized'] ) ) ) ) {
+			   in_array( $post->post_type, $this->options['custom_post_types_recognized'], true ) ) ) ) {
 
 				$nginx_purger->log( 'Set/update future_posts option ( post id = ' . $post->ID . ' and blog id = ' . $blog_id . ' )' );
 				$this->options['future_posts'][ $blog_id ][ $post->ID ] = strtotime( $post->post_date_gmt ) + 60;
 				update_site_option( 'rt_wp_nginx_helper_global_options', $this->options );
+
 			}
 		}
+
 	}
 
 	/**
 	 * Unset future post option on delete
 	 *
-	 * @global type $blog_id
-	 * @global type $nginx_purger
-	 * @param type $post_id
+	 * @global string $blog_id Blog id.
+	 * @global object $nginx_purger Nginx helper object.
+	 *
+	 * @param int $post_id Post id.
 	 */
 	public function unset_future_post_option_on_delete( $post_id ) {
+
 		global $blog_id, $nginx_purger;
 
 		if ( ! $this->options['enable_purge'] ) {
@@ -502,6 +588,7 @@ public function unset_future_post_option_on_delete( $post_id ) {
 		}
 
 		if ( $post_id && ! wp_is_post_revision( $post_id ) ) {
+
 			if ( isset( $this->options['future_posts'][ $blog_id ][ $post_id ] ) &&
 					count( $this->options['future_posts'][ $blog_id ][ $post_id ] ) ) {
 
@@ -513,18 +600,23 @@ public function unset_future_post_option_on_delete( $post_id ) {
 					unset( $this->options['future_posts'][ $blog_id ] );
 					update_site_option( 'rt_wp_nginx_helper_global_options', $this->options );
 				}
+
 			}
+
 		}
+
 	}
 
 	/**
 	 * Update map when new blog added in multisite.
 	 *
-	 * @global type $nginx_purger
-	 * @param type $blog_id
+	 * @global object $nginx_purger Nginx purger class object.
+	 *
+	 * @param string $blog_id blog id.
 	 */
 	public function update_new_blog_options( $blog_id ) {
-		global $rt_wp_nginx_purger;
+
+		global $nginx_purger;
 
 		$nginx_purger->log( "New site added ( id $blog_id )" );
 		$this->update_map();
@@ -532,14 +624,16 @@ public function update_new_blog_options( $blog_id ) {
 		$helper_options = $this->nginx_helper_default_settings();
 		update_blog_option( $blog_id, 'rt_wp_nginx_helper_options', $helper_options );
 		$nginx_purger->log( "Default options updated for the new blog ( id $blog_id )" );
+
 	}
 
 	/**
 	 * Purge all urls.
 	 *
-	 * @global type $nginx_purger
+	 * @global object $nginx_purger
 	 */
 	public function purge_all() {
+
 		global $nginx_purger;
 
 		$action = get_query_var( 'nginx_helper_action', false );
@@ -564,12 +658,13 @@ public function purge_all() {
 
 		switch ( $action ) {
 			case 'purge':
-				$nginx_purger->purgeAll();
+				$nginx_purger->purge_all();
 				break;
 		}
 
 		wp_redirect( esc_url_raw( add_query_arg( array( 'nginx_helper_action' => 'done' ) ) ) );
 		exit();
+
 	}
 
 	/**
@@ -578,4 +673,5 @@ public function purge_all() {
 	public function display_notices() {
 		echo '<div class="updated"><p>' . esc_html_e( 'Purge initiated', 'nginx-helper' ) . '</p></div>';
 	}
+
 }
diff --git a/admin/class-phpredis-purger.php b/admin/class-phpredis-purger.php
index e6dafba5..2365bfe9 100644
--- a/admin/class-phpredis-purger.php
+++ b/admin/class-phpredis-purger.php
@@ -33,24 +33,28 @@ class PhpRedis_Purger extends Purger {
 	 * @since    2.0.0
 	 */
 	public function __construct() {
+
 		global $nginx_helper_admin;
 
 		try {
+
 			$this->redis_object = new Redis();
 			$this->redis_object->connect(
 				$nginx_helper_admin->options['redis_hostname'],
 				$nginx_helper_admin->options['redis_port'],
 				5
 			);
+
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
+
 	}
 
 	/**
 	 * Purge all cache.
 	 */
-	public function purgeAll() {
+	public function purge_all() {
 
 		$this->log( '* * * * *' );
 		$this->log( '* Purged Everything!' );
@@ -69,10 +73,10 @@ public function purgeAll() {
 	/**
 	 * Purge url.
 	 *
-	 * @param string $url
-	 * @param bool   $feed
+	 * @param string $url URL to purge.
+	 * @param bool   $feed Feed or not.
 	 */
-	public function purgeUrl( $url, $feed = true ) {
+	public function purge_url( $url, $feed = true ) {
 
 		global $nginx_helper_admin;
 
@@ -97,9 +101,9 @@ public function purgeUrl( $url, $feed = true ) {
 	}
 
 	/**
-	 * custom purge urls.
+	 * Custom purge urls.
 	 */
-	public function customPurgeUrls() {
+	public function custom_purge_urls() {
 
 		global $nginx_helper_admin;
 
@@ -110,7 +114,7 @@ public function customPurgeUrls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed
+		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
@@ -153,7 +157,7 @@ public function customPurgeUrls() {
 	 * Single Key Delete Example
 	 * e.g. $key can be nginx-cache:httpGETexample.com/
 	 *
-	 * @param $key
+	 * @param string $key Key.
 	 *
 	 * @return int
 	 */
@@ -177,13 +181,13 @@ public function delete_single_key( $key ) {
 	 *
 	 * Call redis eval and return value from lua script
 	 *
-	 * @param string $pattern
+	 * @param string $pattern pattern.
 	 *
 	 * @return mixed
 	 */
 	public function delete_keys_by_wildcard( $pattern ) {
 
-		// Lua Script
+		// Lua Script.
 		$lua = <<<LUA
 local k =  0
 for i, name in ipairs(redis.call('KEYS', KEYS[1]))
diff --git a/admin/class-predis-purger.php b/admin/class-predis-purger.php
index 37041e52..aa9d0cf4 100644
--- a/admin/class-predis-purger.php
+++ b/admin/class-predis-purger.php
@@ -33,16 +33,17 @@ public function __construct() {
 		global $nginx_helper_admin;
 
 		if ( ! class_exists( 'Predis\Autoloader' ) ) {
-			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'admin/predis.php';
+			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'predis.php';
 		}
+
 		Predis\Autoloader::register();
 
 		// redis server parameter.
 		$this->redis_object = new Predis\Client(
-			[
+			array(
 				'host' => $nginx_helper_admin->options['redis_hostname'],
 				'port' => $nginx_helper_admin->options['redis_port'],
-			]
+			)
 		);
 
 		try {
@@ -56,7 +57,7 @@ public function __construct() {
 	/**
 	 * Purge all.
 	 */
-	public function purgeAll() {
+	public function purge_all() {
 
 		global $nginx_helper_admin;
 
@@ -70,7 +71,7 @@ public function purgeAll() {
 			$this->delete_keys_by_wildcard( $prefix . '*' );
 			$this->log( '* Purged Everything! * ' );
 
-		} else { // Else purge only site specific cache
+		} else { // Else purge only site specific cache.
 
 			$parse = wp_parse_url( get_home_url() );
 			$parse['path'] = empty( $parse['path'] ) ? '/' : $parse['path'];
@@ -86,10 +87,10 @@ public function purgeAll() {
 	/**
 	 * Purge url.
 	 *
-	 * @param string $url
-	 * @param bool   $feed
+	 * @param string $url URL.
+	 * @param bool   $feed Feed or not.
 	 */
-	public function purgeUrl( $url, $feed = true ) {
+	public function purge_url( $url, $feed = true ) {
 
 		global $nginx_helper_admin;
 
@@ -110,7 +111,7 @@ public function purgeUrl( $url, $feed = true ) {
 	/**
 	 * Custom purge urls.
 	 */
-	public function customPurgeUrls() {
+	public function custom_purge_urls() {
 
 		global $nginx_helper_admin;
 
@@ -121,7 +122,7 @@ public function customPurgeUrls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed
+		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
@@ -163,14 +164,14 @@ public function customPurgeUrls() {
 	 * Single Key Delete Example
 	 * e.g. $key can be nginx-cache:httpGETexample.com/
 	 *
-	 * @param string $key
+	 * @param string $key Key to delete cache.
 	 *
 	 * @return mixed
 	 */
 	public function delete_single_key( $key ) {
 
 		try {
-			return $this->redis_object->executeRaw( [ 'DEL', $key ] );
+			return $this->redis_object->executeRaw( array( 'DEL', $key ) );
 		} catch ( Exception $e ) {
 			$this->log( $e->getMessage(), 'ERROR' );
 		}
@@ -187,13 +188,13 @@ public function delete_single_key( $key ) {
 	 *
 	 * Call redis eval and return value from lua script
 	 *
-	 * @param string $pattern
+	 * @param string $pattern Pattern.
 	 *
 	 * @return mixed
 	 */
 	public function delete_keys_by_wildcard( $pattern ) {
 
-		// Lua Script
+		// Lua Script.
 		$lua = <<<LUA
 local k =  0
 for i, name in ipairs(redis.call('KEYS', KEYS[1]))
diff --git a/admin/class-purger.php b/admin/class-purger.php
index 4a92e7ee..0c5c0fed 100644
--- a/admin/class-purger.php
+++ b/admin/class-purger.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The admin-specific functionality of the plugin.
  *
@@ -10,16 +9,45 @@
  * Description of purger
  *
  * @package    nginx-helper
+ *
  * @subpackage nginx-helper/admin
+ *
  * @author     rtCamp
  */
 abstract class Purger {
 
-	abstract public function purgeUrl( $url, $feed );
+	/**
+	 * Purge cache for url.
+	 *
+	 * @param string $url URL.
+	 * @param bool   $feed Is feed or not.
+	 *
+	 * @return mixed
+	 */
+	abstract public function purge_url( $url, $feed = true );
+
+	/**
+	 * Purge cache for custom url.
+	 *
+	 * @return mixed
+	 */
+	abstract public function custom_purge_urls();
+
+	/**
+	 * Purge all cache
+	 *
+	 * @return mixed
+	 */
+	abstract public function purge_all();
 
-	abstract public function purgeAll();
+	/**
+	 * Purge cache on comment.
+	 *
+	 * @param int    $comment_id Comment id.
+	 * @param object $comment Comment data.
+	 */
+	public function purge_post_on_comment( $comment_id, $comment ) {
 
-	public function purgePostOnComment( $comment_id, $comment ) {
 		$oldstatus = '';
 		$approved  = $comment->comment_approved;
 
@@ -37,10 +65,19 @@ public function purgePostOnComment( $comment_id, $comment ) {
 			$newstatus = false;
 		}
 
-		$this->purgePostOnCommentChange( $newstatus, $oldstatus, $comment );
+		$this->purge_post_on_comment_change( $newstatus, $oldstatus, $comment );
+
 	}
 
-	public function purgePostOnCommentChange( $newstatus, $oldstatus, $comment ) {
+	/**
+	 * Purge post cache on comment change.
+	 *
+	 * @param string $newstatus New status.
+	 * @param string $oldstatus Old status.
+	 * @param object $comment Comment data.
+	 */
+	public function purge_post_on_comment_change( $newstatus, $oldstatus, $comment ) {
+
 		global $nginx_helper_admin, $blog_id;
 
 		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
@@ -57,28 +94,43 @@ public function purgePostOnCommentChange( $newstatus, $oldstatus, $comment ) {
 		$this->log( "* Status Changed from $oldstatus to $newstatus" );
 
 		switch ( $newstatus ) {
+
 			case 'approved':
 				if ( 1 === $nginx_helper_admin->options['purge_page_on_new_comment'] ) {
+
 					$this->log( '* Comment ( ' . $_comment_id . ' ) approved. Post ( ' . $_post_id . ' ) purging...' );
 					$this->log( '* * * * *' );
-					$this->purgePost( $_post_id );
+					$this->purge_post( $_post_id );
+
 				}
 				break;
+
 			case 'spam':
 			case 'unapproved':
 			case 'trash':
 				if ( 'approve' === $oldstatus ) {
+
 					if ( 1 === (int)$nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
+
 						$this->log( '* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...' );
 						$this->log( '* * * * *' );
-						$this->purgePost( $_post_id );
+						$this->purge_post( $_post_id );
+
 					}
+
 				}
 				break;
+
 		}
+
 	}
 
-	public function purgePost( $_ID ) {
+	/**
+	 * Purge post cache.
+	 *
+	 * @param int $_ID Post id.
+	 */
+	public function purge_post( $_ID ) {
 
 		global $nginx_helper_admin, $blog_id;
 
@@ -87,6 +139,7 @@ public function purgePost( $_ID ) {
 		}
 
 		switch ( current_filter() ) {
+
 			case 'publish_post':
 				$this->log( '* * * * *' );
 				$this->log( '* Blog :: ' . addslashes( get_bloginfo( 'name' ) ) . ' ( ' . $blog_id . ' ).' );
@@ -115,42 +168,56 @@ public function purgePost( $_ID ) {
 				$this->log( "* CPT '" . $_post_type . "' ( " . $_ID . ' ) published or edited and its status is published' );
 				$this->log( '* * * * *' );
 				break;
+
 		}
 
-		$this->log( 'Function purgePost BEGIN ===' );
+		$this->log( 'Function purge_post BEGIN ===' );
 
 		if ( 1 === (int) $nginx_helper_admin->options['purge_homepage_on_edit'] ) {
 			$this->_purge_homepage();
 		}
 
 		if ( 'comment_post' === current_filter() || 'wp_set_comment_status' === current_filter() ) {
+
 			$this->_purge_by_options(
 				$_ID, $blog_id, $nginx_helper_admin->options['purge_page_on_new_comment'], $nginx_helper_admin->options['purge_archive_on_new_comment'], $nginx_helper_admin->options['purge_archive_on_new_comment']
 			);
+
 		} else {
+
 			$this->_purge_by_options(
 				$_ID, $blog_id, $nginx_helper_admin->options['purge_page_on_mod'], $nginx_helper_admin->options['purge_archive_on_edit'], $nginx_helper_admin->options['purge_archive_on_edit']
 			);
+
 		}
 
-		$this->customPurgeUrls();
+		$this->custom_purge_urls();
 
-		$this->log( 'Function purgePost END ^^^' );
+		$this->log( 'Function purge_post END ^^^' );
 	}
 
-	private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_archive, $_purge_custom_taxa ) {
+	/**
+	 * Purge cache by options.
+	 *
+	 * @param int  $post_id Post id.
+	 * @param int  $blog_id Blog id.
+	 * @param bool $_purge_page Purge page or not.
+	 * @param bool $_purge_archive Purge archive or not.
+	 * @param bool $_purge_custom_taxa Purge taxonomy or not.
+	 */
+	private function _purge_by_options( $post_id, $blog_id, $_purge_page, $_purge_archive, $_purge_custom_taxa ) {
 
-		$_post_type = get_post_type( $_post_ID );
+		$_post_type = get_post_type( $post_id );
 
 		if ( $_purge_page ) {
 
 			if ( 'post' === $_post_type || 'page' === $_post_type ) {
-				$this->log( 'Purging ' . $_post_type . ' ( id ' . $_post_ID . ', blog id ' . $blog_id . ' ) ' );
+				$this->log( 'Purging ' . $_post_type . ' ( id ' . $post_id . ', blog id ' . $blog_id . ' ) ' );
 			} else {
-				$this->log( "Purging custom post type '" . $_post_type . "' ( id " . $_post_ID . ', blog id ' . $blog_id . ' )' );
+				$this->log( "Purging custom post type '" . $_post_type . "' ( id " . $post_id . ', blog id ' . $blog_id . ' )' );
 			}
 
-			$this->purgeUrl( get_permalink( $_post_ID ) );
+			$this->purge_url( get_permalink( $post_id ) );
 
 		}
 
@@ -161,29 +228,37 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 			if ( function_exists( 'get_post_type_archive_link' ) && $_post_type_archive_link ) {
 
 				$this->log( 'Purging post type archive ( ' . $_post_type . ' )' );
-				$this->purgeUrl( $_post_type_archive_link );
+				$this->purge_url( $_post_type_archive_link );
 
 			}
 
 			if ( 'post' === $_post_type ) {
+
 				$this->log( 'Purging date' );
 
-				$day   = get_the_time( 'd', $_post_ID );
-				$month = get_the_time( 'm', $_post_ID );
-				$year  = get_the_time( 'Y', $_post_ID );
+				$day   = get_the_time( 'd', $post_id );
+				$month = get_the_time( 'm', $post_id );
+				$year  = get_the_time( 'Y', $post_id );
 
 				if ( $year ) {
-					$this->purgeUrl( get_year_link( $year ) );
+
+					$this->purge_url( get_year_link( $year ) );
+
 					if ( $month ) {
-						$this->purgeUrl( get_month_link( $year, $month ) );
+
+						$this->purge_url( get_month_link( $year, $month ) );
+
 						if ( $day ) {
-							$this->purgeUrl( get_day_link( $year, $month, $day ) );
+							$this->purge_url( get_day_link( $year, $month, $day ) );
 						}
+
 					}
+
 				}
+
 			}
 
-			$categories = wp_get_post_categories( $_post_ID );
+			$categories = wp_get_post_categories( $post_id );
 
 			if ( ! is_wp_error( $categories ) ) {
 
@@ -192,13 +267,13 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 				foreach ( $categories as $category_id ) {
 
 					$this->log( 'Purging category ' . $category_id );
-					$this->purgeUrl( get_category_link( $category_id ) );
+					$this->purge_url( get_category_link( $category_id ) );
 
 				}
 
 			}
 
-			$tags = get_the_tags( $_post_ID );
+			$tags = get_the_tags( $post_id );
 
 			if ( ! is_wp_error( $tags ) && ! empty( $tags ) ) {
 
@@ -207,18 +282,18 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 				foreach ( $tags as $tag ) {
 
 					$this->log( 'Purging tag ' . $tag->term_id );
-					$this->purgeUrl( get_tag_link( $tag->term_id ) );
+					$this->purge_url( get_tag_link( $tag->term_id ) );
 
 				}
 
 			}
 
-			$author_id = get_post( $_post_ID )->post_author;
+			$author_id = get_post( $post_id )->post_author;
 
 			if ( ! empty( $author_id ) ) {
 
 				$this->log( 'Purging author archive' );
-				$this->purgeUrl( get_author_posts_url( $author_id ) );
+				$this->purge_url( get_author_posts_url( $author_id ) );
 
 			}
 
@@ -241,12 +316,12 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 
 					if ( ! in_array( $taxon, array( 'category', 'post_tag', 'link_category' ), true ) ) {
 
-						$terms = get_the_terms( $_post_ID, $taxon );
+						$terms = get_the_terms( $post_id, $taxon );
 
 						if ( ! is_wp_error( $terms ) && ! empty( $terms ) ) {
 
 							foreach ( $terms as $term ) {
-								$this->purgeUrl( get_term_link( $term, $taxon ) );
+								$this->purge_url( get_term_link( $term, $taxon ) );
 							}
 
 						}
@@ -259,61 +334,82 @@ private function _purge_by_options( $_post_ID, $blog_id, $_purge_page, $_purge_a
 		}
 	}
 
-	/*
+	/**
 	 * Deletes local cache files without a 3rd party nginx module.
 	 * Does not require any other modules. Requires that the cache be stored on the same server as WordPress. You must also be using the default nginx cache options (levels=1:2) and (fastcgi_cache_key "$scheme$request_method$host$request_uri").
 	 * Read more on how this works here:
 	 * https://www.digitalocean.com/community/tutorials/how-to-setup-fastcgi-caching-with-nginx-on-your-vps#purging-the-cache
+	 *
+	 * @param string $url URL to purge.
+	 *
+	 * @return bool
 	 */
 	public function _delete_cache_file_for( $url ) {
 
-		// Verify cache path is set
+		// Verify cache path is set.
 		if ( ! defined( 'RT_WP_NGINX_HELPER_CACHE_PATH' ) ) {
+
 			$this->log( 'Error purging because RT_WP_NGINX_HELPER_CACHE_PATH was not defined. URL: ' . $url, 'ERROR' );
 			return false;
+
 		}
 
-		// Verify URL is valid
-		$url_data = parse_url( $url );
+		// Verify URL is valid.
+		$url_data = wp_parse_url( $url );
 		if ( ! $url_data ) {
+
 			$this->log( 'Error purging because specified URL did not appear to be valid. URL: ' . $url, 'ERROR' );
 			return false;
+
 		}
 
-		// Build a hash of the URL
+		// Build a hash of the URL.
 		$hash = md5( $url_data['scheme'] . 'GET' . $url_data['host'] . $url_data['path'] );
 
-		// Ensure trailing slash
+		// Ensure trailing slash.
 		$cache_path = RT_WP_NGINX_HELPER_CACHE_PATH;
-		$cache_path = ( '/' == substr( $cache_path, -1 ) ) ? $cache_path : $cache_path . '/';
+		$cache_path = ( '/' === substr( $cache_path, -1 ) ) ? $cache_path : $cache_path . '/';
 
-		// Set path to cached file
+		// Set path to cached file.
 		$cached_file = $cache_path . substr( $hash, -1 ) . '/' . substr( $hash, -3, 2 ) . '/' . $hash;
 
-		// Verify cached file exists
+		// Verify cached file exists.
 		if ( ! file_exists( $cached_file ) ) {
+
 			$this->log( '- - ' . $url . ' is currently not cached ( checked for file: ' . $cached_file . ' )' );
 			return false;
+
 		}
 
-		// Delete the cached file
+		// Delete the cached file.
 		if ( unlink( $cached_file ) ) {
 			$this->log( '- - ' . $url . ' *** PURGED ***' );
 		} else {
 			$this->log( '- - An error occurred deleting the cache file. Check the server logs for a PHP warning.', 'ERROR' );
 		}
+
 	}
 
+	/**
+	 * Remote get data from url.
+	 *
+	 * @param string $url URL to do remote request.
+	 */
 	public function _do_remote_get( $url ) {
 
 		$response = wp_remote_get( $url );
 
 		if ( is_wp_error( $response ) ) {
+
 			$_errors_str = implode( ' - ', $response->get_error_messages() );
 			$this->log( 'Error while purging URL. ' . $_errors_str, 'ERROR' );
+
 		} else {
+
 			if ( $response['response']['code'] ) {
+
 				switch ( $response['response']['code'] ) {
+
 					case 200:
 						$this->log( '- - ' . $url . ' *** PURGED ***' );
 						break;
@@ -322,24 +418,43 @@ public function _do_remote_get( $url ) {
 						break;
 					default:
 						$this->log( '- - ' . $url . ' not found ( ' . $response['response']['code'] . ' )', 'WARNING' );
+
 				}
+
 			}
+
 		}
+
 	}
 
-	public function checkHttpConnection() {
+	/**
+	 * Check http connection.
+	 *
+	 * @return string
+	 */
+	public function check_http_connection() {
 
-		$purgeURL = plugins_url( 'nginx-manager/check-proxy.php' );
-		$response = wp_remote_get( $purgeURL );
+		$purge_url = plugins_url( 'nginx-manager/check-proxy.php' );
+		$response  = wp_remote_get( $purge_url );
 
-		if ( ! is_wp_error( $response ) && ( 'HTTP Connection OK' == $response['body'] ) ) {
+		if ( ! is_wp_error( $response ) && ( 'HTTP Connection OK' === $response['body'] ) ) {
 			return 'OK';
 		}
 
 		return 'KO';
+
 	}
 
+	/**
+	 * Log file.
+	 *
+	 * @param string $msg Message to log.
+	 * @param string $level Level.
+	 *
+	 * @return bool|void
+	 */
 	public function log( $msg, $level = 'INFO' ) {
+
 		global $nginx_helper_admin;
 
 		if ( ! $nginx_helper_admin->options['enable_log'] ) {
@@ -354,16 +469,25 @@ public function log( $msg, $level = 'INFO' ) {
 		);
 
 		if ( $log_levels[ $level ] >= $log_levels[ $nginx_helper_admin->options['log_level'] ] ) {
+
 			if ( $fp = fopen( $nginx_helper_admin->functional_asset_path() . 'nginx.log', 'a+' ) ) {
+
 				fwrite( $fp, "\n" . gmdate( 'Y-m-d H:i:s ' ) . ' | ' . $level . ' | ' . $msg );
 				fclose( $fp );
+
 			}
+
 		}
 
 		return true;
+
 	}
 
-	public function checkAndTruncateLogFile() {
+	/**
+	 * Check and truncate log file.
+	 */
+	public function check_and_truncate_log_file() {
+
 		global $nginx_helper_admin;
 
 		$maxSizeAllowed = ( is_numeric( $nginx_helper_admin->options['log_filesize'] ) ) ? $nginx_helper_admin->options['log_filesize'] * 1048576 : 5242880;
@@ -371,56 +495,91 @@ public function checkAndTruncateLogFile() {
 		$fileSize = filesize( $nginx_helper_admin->functional_asset_path() . 'nginx.log' );
 
 		if ( $fileSize > $maxSizeAllowed ) {
+
 			$offset = $fileSize - $maxSizeAllowed;
+
 			if ( $file_content = file_get_contents( $nginx_helper_admin->functional_asset_path() . 'nginx.log', null, null, $offset ) ) {
+
 				if ( $file_content = strstr( $file_content, "\n" ) ) {
+
 					if ( $fp = fopen( $nginx_helper_admin->functional_asset_path() . 'nginx.log', 'w+' ) ) {
+
 						fwrite( $fp, $file_content );
 						fclose( $fp );
+
 					}
+
 				}
+
 			}
+
 		}
+
 	}
 
-	public function purgeImageOnEdit( $attachment_id ) {
+	/**
+	 * Purge image on edit.
+	 *
+	 * @param int $attachment_id Attachment id.
+	 */
+	public function purge_image_on_edit( $attachment_id ) {
 
 		$this->log( 'Purging media on edit BEGIN ===' );
 
 		if ( wp_attachment_is_image( $attachment_id ) ) {
-			$this->purgeUrl( wp_get_attachment_url( $attachment_id ), false );
+
+			$this->purge_url( wp_get_attachment_url( $attachment_id ), false );
 			$attachment = wp_get_attachment_metadata( $attachment_id );
 
 			if ( ! empty( $attachment['sizes'] ) && is_array( $attachment['sizes'] ) ) {
-				foreach ( $attachment['sizes'] as $size_name => $size ) {
+
+				foreach ( array_keys( $attachment['sizes'] ) as $size_name ) {
+
 					$resize_image = wp_get_attachment_image_src( $attachment_id, $size_name );
+
 					if ( $resize_image ) {
-						$this->purgeUrl( $resize_image[0], false );
+						$this->purge_url( $resize_image[0], false );
 					}
+
 				}
+
 			}
-			$this->purgeURL( get_attachment_link( $attachment_id ) );
+
+			$this->purge_url( get_attachment_link( $attachment_id ) );
+
 		} else {
 			$this->log( 'Media ( id ' . $attachment_id . ') edited: no image', 'WARNING' );
 		}
 
 		$this->log( 'Purging media on edit END ^^^' );
+
 	}
 
+	/**
+	 * Purge cache on post moved to trash.
+	 *
+	 * @param string  $new_status New post status.
+	 * @param string  $old_status Old post status.
+	 * @param WP_Post $post Post object.
+	 *
+	 * @return bool|void
+	 */
 	public function purge_on_post_moved_to_trash( $new_status, $old_status, $post ) {
+
 		global $nginx_helper_admin, $blog_id;
 
 		if ( ! $nginx_helper_admin->options['enable_purge'] ) {
 			return;
 		}
-		if ( 'trash' == $new_status ) {
+
+		if ( 'trash' === $new_status ) {
 
 			$this->log( '# # # # #' );
 			$this->log( "# Post '$post->post_title' (  id " . $post->ID . ' ) moved to the trash.' );
 			$this->log( '# # # # #' );
 			$this->log( 'Function purge_on_post_moved_to_trash ( post id ' . $post->ID . ' ) BEGIN ===' );
 
-			if ( 1 == $nginx_helper_admin->options['purge_homepage_on_del'] ) {
+			if ( 1 === (int) $nginx_helper_admin->options['purge_homepage_on_del'] ) {
 				$this->_purge_homepage();
 			}
 
@@ -436,8 +595,14 @@ public function purge_on_post_moved_to_trash( $new_status, $old_status, $post )
 		}
 
 		return true;
+
 	}
 
+	/**
+	 * Purge cache of homepage.
+	 *
+	 * @return bool
+	 */
 	private function _purge_homepage() {
 
 		// WPML installetd?.
@@ -453,55 +618,99 @@ private function _purge_homepage() {
 
 		}
 
-		$this->purgeUrl( $homepage_url );
+		$this->purge_url( $homepage_url );
 
 		return true;
+
 	}
 
+	/**
+	 * Purge personal urls.
+	 *
+	 * @return bool
+	 */
 	private function _purge_personal_urls() {
+
 		global $nginx_helper_admin;
 
 		$this->log( __( 'Purging personal urls', 'nginx-helper' ) );
 
 		if ( isset( $nginx_helper_admin->options['purgeable_url']['urls'] ) ) {
+
 			foreach ( $nginx_helper_admin->options['purgeable_url']['urls'] as $u ) {
-				$this->purgeUrl( $u, false );
+				$this->purge_url( $u, false );
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No personal urls available', 'nginx-helper' ) );
 		}
 
 		return true;
+
 	}
 
+	/**
+	 * Purge post categories.
+	 *
+	 * @param int $_post_id Post id.
+	 *
+	 * @return bool
+	 */
 	private function _purge_post_categories( $_post_id ) {
 
 		$this->log( __( 'Purging category archives', 'nginx-helper' ) );
 
-		if ( $categories = wp_get_post_categories( $_post_id ) ) {
+		$categories = wp_get_post_categories( $_post_id );
+
+		if ( ! is_wp_error( $categories ) && ! empty( $categories ) ) {
+
 			foreach ( $categories as $category_id ) {
+
 				$this->log( sprintf( __( "Purging category '%d'", 'nginx-helper' ), $category_id ) );
-				$this->purgeUrl( get_category_link( $category_id ) );
+				$this->purge_url( get_category_link( $category_id ) );
+
 			}
+
 		}
 
 		return true;
 	}
 
+	/**
+	 * Purge post tags.
+	 *
+	 * @param int $_post_id Post id.
+	 *
+	 * @return bool
+	 */
 	private function _purge_post_tags( $_post_id ) {
 
 		$this->log( __( 'Purging tags archives', 'nginx-helper' ) );
 
-		if ( $tags = get_the_tags( $_post_id ) ) {
+		$tags = get_the_tags( $_post_id );
+
+		if ( ! is_wp_error( $tags ) && ! empty( $tags ) ) {
+
 			foreach ( $tags as $tag ) {
+
 				$this->log( sprintf( __( "Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper' ), $tag->name, $tag->term_id ) );
-				$this->purgeUrl( get_tag_link( $tag->term_id ) );
+				$this->purge_url( get_tag_link( $tag->term_id ) );
+
 			}
+
 		}
 
 		return true;
+
 	}
 
+	/**
+	 * Purge post custom taxonomy data.
+	 *
+	 * @param int $_post_id Post id.
+	 *
+	 * @return bool
+	 */
 	private function _purge_post_custom_taxa( $_post_id ) {
 
 		$this->log( __( 'Purging post custom taxonomies related', 'nginx-helper' ) );
@@ -526,7 +735,7 @@ private function _purge_post_custom_taxa( $_post_id ) {
 					if ( ! is_wp_error( $terms ) && ! empty( $terms ) && is_array( $terms ) ) {
 
 						foreach ( $terms as $term ) {
-							$this->purgeUrl( get_term_link( $term, $taxon ) );
+							$this->purge_url( get_term_link( $term, $taxon ) );
 						}
 
 					}
@@ -543,6 +752,11 @@ private function _purge_post_custom_taxa( $_post_id ) {
 		return true;
 	}
 
+	/**
+	 * Purge all categories.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_categories() {
 
 		$this->log( __( 'Purging all categories', 'nginx-helper' ) );
@@ -554,7 +768,7 @@ private function _purge_all_categories() {
 			foreach ( $_categories as $c ) {
 
 				$this->log( sprintf( __( "Purging category '%1\$s' ( id %2\$d )", 'nginx-helper' ), $c->name, $c->term_id ) );
-				$this->purgeUrl( get_category_link( $c->term_id ) );
+				$this->purge_url( get_category_link( $c->term_id ) );
 
 			}
 
@@ -567,6 +781,11 @@ private function _purge_all_categories() {
 		return true;
 	}
 
+	/**
+	 * Purge all posttags cache.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_posttags() {
 
 		$this->log( __( 'Purging all tags', 'nginx-helper' ) );
@@ -578,7 +797,7 @@ private function _purge_all_posttags() {
 			foreach ( $_posttags as $t ) {
 
 				$this->log( sprintf( __( "Purging tag '%1\$s' ( id %2\$d )", 'nginx-helper' ), $t->name, $t->term_id ) );
-				$this->purgeUrl( get_tag_link( $t->term_id ) );
+				$this->purge_url( get_tag_link( $t->term_id ) );
 
 			}
 
@@ -590,6 +809,11 @@ private function _purge_all_posttags() {
 
 	}
 
+	/**
+	 * Purge all custom taxonomy data.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_customtaxa() {
 
 		$this->log( __( 'Purging all custom taxonomies', 'nginx-helper' ) );
@@ -615,7 +839,7 @@ private function _purge_all_customtaxa() {
 
 						foreach ( $terms as $term ) {
 
-							$this->purgeUrl( get_term_link( $term, $taxon ) );
+							$this->purge_url( get_term_link( $term, $taxon ) );
 
 						}
 
@@ -634,6 +858,11 @@ private function _purge_all_customtaxa() {
 		return true;
 	}
 
+	/**
+	 * Purge all taxonomies.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_taxonomies() {
 
 		$this->_purge_all_categories();
@@ -643,24 +872,30 @@ private function _purge_all_taxonomies() {
 		return true;
 	}
 
+	/**
+	 * Purge all posts cache.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_posts() {
 
 		$this->log( __( 'Purging all posts, pages and custom post types.', 'nginx-helper' ) );
 
 		$args = array(
-			'numberposts' => 0,
-			'post_type'   => 'any',
-			'post_status' => 'publish',
+			'posts_per_page' => 0,
+			'post_type'      => 'any',
+			'post_status'    => 'publish',
 		);
 
-		$_posts = get_posts( $args );
+		$get_posts = new WP_Query;
+		$_posts    = $get_posts->query( $args );
 
 		if ( ! empty( $_posts ) ) {
 
 			foreach ( $_posts as $p ) {
 
 				$this->log( sprintf( '+ ' . __( "Purging post id '%1\$d' ( post type '%2\$s' )", 'nginx-helper' ), $p->ID, $p->post_type ) );
-				$this->purgeUrl( get_permalink( $p->ID ) );
+				$this->purge_url( get_permalink( $p->ID ) );
 
 			}
 
@@ -669,8 +904,14 @@ private function _purge_all_posts() {
 		}
 
 		return true;
+
 	}
 
+	/**
+	 * Purge all archives.
+	 *
+	 * @return bool
+	 */
 	private function _purge_all_date_archives() {
 
 		$this->log( __( 'Purging all date-based archives.', 'nginx-helper' ) );
@@ -680,81 +921,141 @@ private function _purge_all_date_archives() {
 		$this->_purge_all_yearly_archives();
 
 		return true;
+
 	}
 
+	/**
+	 * Purge daily archives cache.
+	 */
 	private function _purge_all_daily_archives() {
+
 		global $wpdb;
 
 		$this->log( __( 'Purging all daily archives.', 'nginx-helper' ) );
 
 		$_query_daily_archives = $wpdb->prepare(
-			"SELECT YEAR(post_date) AS 'year', MONTH(post_date) AS 'month', DAYOFMONTH(post_date) AS 'dayofmonth', count(ID) as posts
+			"SELECT YEAR(post_date) AS %s, MONTH(post_date) AS %s, DAYOFMONTH(post_date) AS %s, count(ID) as posts
             FROM $wpdb->posts
-            WHERE post_type = 'post' AND post_status = 'publish'
+            WHERE post_type = %s AND post_status = %s
             GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date)
-            ORDER BY post_date DESC"
+            ORDER BY post_date DESC",
+			'year', 'month', 'dayofmonth', 'post', 'publish'
 		);
 
-		if ( $_daily_archives = $wpdb->get_results( $_query_daily_archives ) ) {
+		$_daily_archives = $wpdb->get_results( $_query_daily_archives ); // phpcs:ignore
+
+		if ( ! empty( $_daily_archives ) ) {
+
 			foreach ( $_daily_archives as $_da ) {
+
 				$this->log(
 					sprintf(
 						'+ ' . __( "Purging daily archive '%1\$s/%2\$s/%3\$s'", 'nginx-helper' ), $_da->year, $_da->month, $_da->dayofmonth
 					)
 				);
-				$this->purgeUrl( get_day_link( $_da->year, $_da->month, $_da->dayofmonth ) );
+
+				$this->purge_url( get_day_link( $_da->year, $_da->month, $_da->dayofmonth ) );
+
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No daily archives', 'nginx-helper' ) );
 		}
+
 	}
 
+	/**
+	 * Purge all monthly archives.
+	 */
 	private function _purge_all_monthly_archives() {
+
 		global $wpdb;
 
 		$this->log( __( 'Purging all monthly archives.', 'nginx-helper' ) );
 
-		$_query_monthly_archives = $wpdb->prepare(
-			"SELECT YEAR(post_date) AS 'year', MONTH(post_date) AS 'month', count(ID) as posts
-            FROM $wpdb->posts
-            WHERE post_type = 'post' AND post_status = 'publish'
-            GROUP BY YEAR(post_date), MONTH(post_date)
-            ORDER BY post_date DESC"
-		);
+		$_monthly_archives = wp_cache_get( 'nginx_helper_monthly_archives', 'nginx_helper' );
+
+		if ( empty( $_monthly_archives ) ) {
+
+			$_query_monthly_archives = $wpdb->prepare(
+				"SELECT YEAR(post_date) AS %s, MONTH(post_date) AS %s, count(ID) as posts
+	            FROM $wpdb->posts
+	            WHERE post_type = %s AND post_status = %s
+	            GROUP BY YEAR(post_date), MONTH(post_date)
+	            ORDER BY post_date DESC",
+				'year', 'month', 'post', 'publish'
+			);
+
+			$_monthly_archives = $wpdb->get_results( $_query_monthly_archives ); // phpcs:ignore
+
+			wp_cache_set( 'nginx_helper_monthly_archives', $_monthly_archives, 'nginx_helper', 24*60*60 );
+
+		}
+
+
+		if ( ! empty( $_monthly_archives ) ) {
 
-		if ( $_monthly_archives = $wpdb->get_results( $_query_monthly_archives ) ) {
 			foreach ( $_monthly_archives as $_ma ) {
+
 				$this->log( sprintf( '+ ' . __( "Purging monthly archive '%1\$s/%2\$s'", 'nginx-helper' ), $_ma->year, $_ma->month ) );
-				$this->purgeUrl( get_month_link( $_ma->year, $_ma->month ) );
+				$this->purge_url( get_month_link( $_ma->year, $_ma->month ) );
+
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No monthly archives', 'nginx-helper' ) );
 		}
+
 	}
 
+	/**
+	 * Purge all yearly archive cache.
+	 */
 	private function _purge_all_yearly_archives() {
+
 		global $wpdb;
 
 		$this->log( __( 'Purging all yearly archives.', 'nginx-helper' ) );
 
-		$_query_yearly_archives = $wpdb->prepare(
-			"SELECT YEAR(post_date) AS 'year', count(ID) as posts
-            FROM $wpdb->posts
-            WHERE post_type = 'post' AND post_status = 'publish'
-            GROUP BY YEAR(post_date)
-            ORDER BY post_date DESC"
-		);
+		$_yearly_archives = wp_cache_get( 'nginx_helper_yearly_archives', 'nginx_helper' );
+
+		if ( empty( $_yearly_archives ) ) {
+
+			$_query_yearly_archives = $wpdb->prepare(
+				"SELECT YEAR(post_date) AS %s, count(ID) as posts
+	            FROM $wpdb->posts
+	            WHERE post_type = %s AND post_status = %s
+	            GROUP BY YEAR(post_date)
+	            ORDER BY post_date DESC",
+				'year', 'post', 'publish'
+			);
+
+			$_yearly_archives = $wpdb->get_results( $_query_yearly_archives ); // phpcs:ignore
+
+			wp_cache_set( 'nginx_helper_yearly_archives', $_yearly_archives, 'nginx_helper', 24*60*60 );
+
+		}
+
+		if ( ! empty( $_yearly_archives ) ) {
 
-		if ( $_yearly_archives = $wpdb->get_results( $_query_yearly_archives ) ) {
 			foreach ( $_yearly_archives as $_ya ) {
+
 				$this->log( sprintf( '+ ' . __( "Purging yearly archive '%s'", 'nginx-helper' ), $_ya->year ) );
-				$this->purgeUrl( get_year_link( $_ya->year ) );
+				$this->purge_url( get_year_link( $_ya->year ) );
+
 			}
+
 		} else {
 			$this->log( '- ' . __( 'No yearly archives', 'nginx-helper' ) );
 		}
+
 	}
 
+	/**
+	 * Purge all cache.
+	 *
+	 * @return bool
+	 */
 	public function purge_them_all() {
 
 		$this->log( __( "Let's purge everything!", 'nginx-helper' ) );
@@ -763,42 +1064,77 @@ public function purge_them_all() {
 		$this->_purge_all_posts();
 		$this->_purge_all_taxonomies();
 		$this->_purge_all_date_archives();
-		$this->log( __( 'Everthing purged!', 'nginx-helper' ) );
+		$this->log( __( 'Everything purged!', 'nginx-helper' ) );
+
 		return true;
+
 	}
 
+	/**
+	 * Purge cache on term edited.
+	 *
+	 * @param int    $term_id Term id.
+	 * @param int    $tt_id Taxonomy id.
+	 * @param string $taxon Taxonomy.
+	 *
+	 * @return bool
+	 */
 	public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
 
 		$this->log( __( 'Term taxonomy edited or deleted', 'nginx-helper' ) );
 
-		if ( 'edit_term' === current_filter() && $term = get_term( $term_id, $taxon ) ) {
+		$term = get_term( $term_id, $taxon );
+
+		if ( 'edit_term' === current_filter() && ! is_wp_error( $term ) && ! empty( $term ) ) {
+
 			$this->log( sprintf( __( "Term taxonomy '%1\$s' edited, (tt_id '%2\$d', term_id '%3\$d', taxonomy '%4\$s')", 'nginx-helper' ), $term->name, $tt_id, $term_id, $taxon ) );
-		} elseif ( 'delete_term' == current_filter() ) {
+
+		} elseif ( 'delete_term' === current_filter() ) {
+
 			$this->log( sprintf( __( "A term taxonomy has been deleted from taxonomy '%1\$s', (tt_id '%2\$d', term_id '%3\$d')", 'nginx-helper' ), $taxon, $term_id, $tt_id ) );
+
 		}
 
 		$this->_purge_homepage();
 
 		return true;
+
 	}
 
+	/**
+	 * Check ajax referrer on purge.
+	 *
+	 * @param string $action Action.
+	 * @param string $result Result.
+	 *
+	 * @return bool
+	 */
 	public function purge_on_check_ajax_referer( $action, $result ) {
 
 		switch ( $action ) {
+
 			case 'save-sidebar-widgets':
 				$this->log( __( 'Widget saved, moved or removed in a sidebar', 'nginx-helper' ) );
 				$this->_purge_homepage();
 				break;
+
 			default:
 				break;
+
 		}
+
 		return true;
+
 	}
 
-	/*
+	/**
+	 * Unlink file recursively.
 	 * Source - http://stackoverflow.com/a/1360437/156336
+	 *
+	 * @param string $dir Directory.
+	 * @param bool   $deleteRootToo Delete root or not.
 	 */
-	public function unlinkRecursive( $dir, $deleteRootToo ) {
+	public function unlink_recursive( $dir, $deleteRootToo ) {
 
 		if ( ! is_dir( $dir ) ) {
 			return;
@@ -809,13 +1145,15 @@ public function unlinkRecursive( $dir, $deleteRootToo ) {
 		}
 
 		while ( false !== ( $obj = readdir( $dh ) ) ) {
+
 			if ( $obj == '.' || $obj == '..' ) {
 				continue;
 			}
 
 			if ( ! @unlink( $dir . '/' . $obj ) ) {
-				$this->unlinkRecursive( $dir . '/' . $obj, false );
+				$this->unlink_recursive( $dir . '/' . $obj, false );
 			}
+
 		}
 
 		if ( $deleteRootToo ) {
@@ -825,5 +1163,7 @@ public function unlinkRecursive( $dir, $deleteRootToo ) {
 		closedir( $dh );
 
 		return;
+
 	}
+
 }
diff --git a/admin/index.php b/admin/index.php
index e71af0ef..f0dd56b9 100644
--- a/admin/index.php
+++ b/admin/index.php
@@ -1 +1,8 @@
-<?php // Silence is golden
\ No newline at end of file
+<?php
+/**
+ * Silence is golden.
+ *
+ * @package    nginx-helper
+ */
+
+// Silence.
diff --git a/admin/js/nginx-helper-admin.js b/admin/js/nginx-helper-admin.js
index 4a1cb3e0..1628474b 100644
--- a/admin/js/nginx-helper-admin.js
+++ b/admin/js/nginx-helper-admin.js
@@ -29,17 +29,24 @@
      * be doing this, we should try to minimize doing that in our own work.
      */
     $(function () {
+
         var news_section = jQuery( '#latest_news' );
+
         if ( news_section.length > 0 ) {
+
             var args = {
                 'action': 'rt_get_feeds'
-            }
-            jQuery.post( ajaxurl, args, function (data) {
+            };
+
+            jQuery.get( ajaxurl, args, function (data) {
                 news_section.find( '.inside' ).html( data );
+                console.log(data);
             });
+
         }
 
         jQuery( "form#purgeall a" ).click( function (e) {
+
             if ( confirm( "Purging entire cache is not recommended. Would you like to continue ?" ) == true ) {
                 // continue submitting form
             } else {
@@ -53,18 +60,25 @@
          * @param {type} selector Selector of Checkbox and PostBox
          */
         function nginx_show_option( selector ) {
+
             jQuery( '#' + selector ).on( 'change', function () {
+
                 if ( jQuery( this ).is( ':checked' ) ) {
+
                     jQuery( '.' + selector ).show();
+
                     if ( selector == "cache_method_redis" ) {
                         jQuery( '.cache_method_fastcgi' ).hide();
                     } else if ( selector == "cache_method_fastcgi" ) {
                         jQuery( '.cache_method_redis' ).hide();
                     }
+
                 } else {
                     jQuery( '.' + selector ).hide();
                 }
+
             });
+
         }
         
         /* Function call with parameter */
@@ -73,5 +87,6 @@
         nginx_show_option( 'enable_map' );
         nginx_show_option( 'enable_log' );
         nginx_show_option( 'enable_purge' );
+
     });
 })(jQuery);
diff --git a/admin/partials/nginx-helper-admin-display.php b/admin/partials/nginx-helper-admin-display.php
index 7e2d9426..98736332 100644
--- a/admin/partials/nginx-helper-admin-display.php
+++ b/admin/partials/nginx-helper-admin-display.php
@@ -25,29 +25,33 @@
 			<div id="post-body-content">
 				<?php
 				/* Show settinhs tabs */
-				$tab = filter_input( INPUT_GET, 'tab', FILTER_SANITIZE_STRING );
-				$current_setting_tab = ( ! empty( $tab ) ) ? $tab : 'general';
+				$current_tab = filter_input( INPUT_GET, 'tab', FILTER_SANITIZE_STRING );
+				$current_setting_tab = ( ! empty( $current_tab ) ) ? $current_tab : 'general';
 
 				echo '<h2 class="nav-tab-wrapper">';
 				foreach ( $this->settings_tabs as $setting_tab => $setting_name ) {
+
 					$class = ( $setting_tab === $current_setting_tab ) ? ' nav-tab-active' : '';
 					echo '<a class="nav-tab' . esc_attr( $class ) . '" href="?page=nginx&tab=' . esc_attr( $setting_name['menu_slug'] ) . '">' . esc_html( $setting_name['menu_title'] ) . '</a>';
+
 				}
 				echo '</h2>';
 
 				switch ( $current_setting_tab ) {
+
 					case 'general':
-						include plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-general-options.php';
+						include plugin_dir_path(__FILE__ ) . 'nginx-helper-general-options.php';
 						break;
 					case 'support':
-						include plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-support-options.php';
+						include plugin_dir_path(__FILE__ ) . 'nginx-helper-support-options.php';
 						break;
+
 				}
 				?>
 			</div> <!-- End of #post-body-content -->
 			<div id="postbox-container-1" class="postbox-container">
 				<?php
-					require plugin_dir_path(__FILE__ ) . 'admin/partials/nginx-helper-sidebar-display.php';
+					require plugin_dir_path(__FILE__ ) . 'nginx-helper-sidebar-display.php';
 				?>
 			</div> <!-- End of #postbox-container-1 -->
 		</div> <!-- End of #post-body -->
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index 5bd38583..eb910e0f 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -14,12 +14,29 @@
 
 $error_log_filesize = false;
 
-if ( isset( $_POST['smart_http_expire_save'] ) ) {
-	unset( $_POST['smart_http_expire_save'] );
-	unset( $_POST['is_submit'] );
+$args = array(
+	'enable_purge'           => FILTER_SANITIZE_STRING,
+	'is_submit'              => FILTER_SANITIZE_STRING,
+	'redis_hostname'         => FILTER_SANITIZE_STRING,
+	'redis_port'             => FILTER_SANITIZE_STRING,
+	'redis_prefix'           => FILTER_SANITIZE_STRING,
+	'purge_homepage_on_edit' => FILTER_SANITIZE_STRING,
+	'purge_homepage_on_del'  => FILTER_SANITIZE_STRING,
+	'purge_url'              => FILTER_SANITIZE_STRING,
+	'log_level'              => FILTER_SANITIZE_STRING,
+	'log_filesize'           => FILTER_SANITIZE_STRING,
+	'smart_http_expire_save' => FILTER_SANITIZE_STRING,
+);
+
+$all_inputs = filter_input_array(INPUT_POST, $args);
+
+if ( isset( $all_inputs['smart_http_expire_save'] ) && 'Save All Changes' === $all_inputs['smart_http_expire_save'] ) {
+
+	unset( $all_inputs['smart_http_expire_save'] );
+	unset( $all_inputs['is_submit'] );
 
 	$nginx_settings = wp_parse_args(
-		$_POST,
+		$all_inputs,
 		$nginx_helper_admin->nginx_helper_default_settings()
 	);
 
@@ -35,6 +52,7 @@
 	update_site_option( 'rt_wp_nginx_helper_options', $nginx_settings );
 
 	echo '<div class="updated"><p>' . esc_html__( 'Settings saved.', 'nginx-helper' ) . '</p></div>';
+
 }
 
 $nginx_helper_settings = $nginx_helper_admin->nginx_helper_settings();
@@ -75,7 +93,7 @@
 	</div>
 
 	<?php if ( ! ( ! is_network_admin() && is_multisite() ) ) { ?>
-		<div class="postbox enable_purge"<?php echo ( false === $nginx_helper_settings['enable_purge'] ) ? ' style="display: none;"' : ''; ?>>
+		<div class="postbox enable_purge"<?php echo ( empty( $nginx_helper_settings['enable_purge'] ) ) ? ' style="display: none;"' : ''; ?>>
 			<h3 class="hndle">
 				<span><?php esc_html_e( 'Caching Method', 'nginx-helper' ); ?></span>
 			</h3>
@@ -107,7 +125,7 @@
 			</div> <!-- End of .inside -->
 		</div>
 		<div class="enable_purge">
-			<div class="postbox cache_method_fastcgi"<?php echo ( true === $nginx_helper_settings['enable_purge'] && 'enable_fastcgi' === $nginx_helper_settings['cache_method'] ) ? '' : ' style="display: none;"'; ?>>
+			<div class="postbox cache_method_fastcgi"<?php echo ( ! empty( $nginx_helper_settings['enable_purge'] ) && 'enable_fastcgi' === $nginx_helper_settings['cache_method'] ) ? '' : ' style="display: none;"'; ?>>
 				<h3 class="hndle">
 					<span><?php esc_html_e( 'Purge Method', 'nginx-helper' ); ?></span>
 				</h3>
@@ -165,7 +183,7 @@
 					</table>
 				</div> <!-- End of .inside -->
 			</div>
-			<div class="postbox cache_method_redis"<?php echo ( true === $nginx_helper_settings['enable_purge'] && 'enable_redis' === $nginx_helper_settings['cache_method'] ) ? '' : ' style="display: none;"'; ?>>
+			<div class="postbox cache_method_redis"<?php echo ( ! empty( $nginx_helper_settings['enable_purge'] ) && 'enable_redis' === $nginx_helper_settings['cache_method'] ) ? '' : ' style="display: none;"'; ?>>
 				<h3 class="hndle">
 					<span><?php esc_html_e( 'Redis Settings', 'nginx-helper' ); ?></span>
 				</h3>
@@ -174,26 +192,53 @@
 						<tr>
 							<th><label for="redis_hostname"><?php esc_html_e( 'Hostname', 'nginx-helper' ); ?></label></th>
 							<td>
-								<input id="redis_hostname" class="medium-text" type="text" name="redis_hostname" value="<?php echo esc_attr( $nginx_helper_settings['redis_hostname'] ); ?>" />
+								<input id="redis_hostname" class="medium-text" type="text" name="redis_hostname" value="<?php echo esc_attr( $nginx_helper_settings['redis_hostname'] ); ?>" <?php echo ( $nginx_helper_settings['redis_hostname_readonly'] ) ? 'readonly="readonly"' : ''; ?> />
+								<?php
+								if ( $nginx_helper_settings['redis_hostname_readonly'] ) {
+
+									echo '<p class="description">';
+									esc_html_e( 'Overridden by global define', 'nginx-helper' );
+									echo '</p>';
+
+								}
+								?>
 							</td>
 						</tr>
 						<tr>
 							<th><label for="redis_port"><?php esc_html_e( 'Port', 'nginx-helper' ); ?></label></th>
 							<td>
-								<input id="redis_port" class="medium-text" type="text" name="redis_port" value="<?php echo esc_attr( $nginx_helper_settings['redis_port'] ); ?>" />
+								<input id="redis_port" class="medium-text" type="text" name="redis_port" value="<?php echo esc_attr( $nginx_helper_settings['redis_port'] ); ?>" <?php echo ( $nginx_helper_settings['redis_port_readonly'] ) ? 'readonly="readonly"' : ''; ?> />
+								<?php
+								if ( $nginx_helper_settings['redis_port_readonly'] ) {
+
+									echo '<p class="description">';
+									esc_html_e( 'Overridden by global define', 'nginx-helper' );
+									echo '</p>';
+
+								}
+								?>
 							</td>
 						</tr>
 						<tr>
 							<th><label for="redis_prefix"><?php esc_html_e( 'Prefix', 'nginx-helper' ); ?></label></th>
 							<td>
-								<input id="redis_prefix" class="medium-text" type="text" name="redis_prefix" value="<?php echo esc_attr( $nginx_helper_settings['redis_prefix'] ); ?>" />
+								<input id="redis_prefix" class="medium-text" type="text" name="redis_prefix" value="<?php echo esc_attr( $nginx_helper_settings['redis_prefix'] ); ?>" <?php echo ( $nginx_helper_settings['redis_prefix_readonly'] ) ? 'readonly="readonly"' : ''; ?> />
+								<?php
+								if ( $nginx_helper_settings['redis_prefix_readonly'] ) {
+
+									echo '<p class="description">';
+									esc_html_e( 'Overridden by global define', 'nginx-helper' );
+									echo '</p>';
+
+								}
+								?>
 							</td>
 						</tr>
 					</table>
 				</div> <!-- End of .inside -->
 			</div>
 		</div>
-		<div class="postbox enable_purge"<?php echo ( false === $nginx_helper_settings['enable_purge'] ) ? ' style="display: none;"' : ''; ?>>
+		<div class="postbox enable_purge"<?php echo ( empty( $nginx_helper_settings['enable_purge'] ) ) ? ' style="display: none;"' : ''; ?>>
 			<h3 class="hndle">
 				<span><?php esc_html_e( 'Purging Conditions', 'nginx-helper' ); ?></span>
 			</h3>
@@ -477,7 +522,7 @@
 
 if ( is_network_admin() ) {
 	?>
-		<div class="postbox enable_map"<?php echo ( false === $nginx_helper_settings['enable_map'] ) ? ' style="display: none;"' : ''; ?>>
+		<div class="postbox enable_map"<?php echo ( empty( $nginx_helper_settings['enable_map'] ) ) ? ' style="display: none;"' : ''; ?>>
 			<h3 class="hndle">
 				<span><?php esc_html_e( 'Nginx Map', 'nginx-helper' ); ?></span>
 			</h3>
@@ -525,7 +570,7 @@
 						</th>
 						<td>
 							<pre id="map">
-							<?php echo $nginx_helper_admin->get_map(); ?>
+							<?php echo esc_html( $nginx_helper_admin->get_map() ); ?>
 							</pre>
 						</td>
 					</tr>
@@ -535,7 +580,7 @@
 	<?php
 }
 ?>
-	<div class="postbox enable_log"<?php echo ( false === $nginx_helper_settings['enable_log'] ) ? ' style="display: none;"' : ''; ?>>
+	<div class="postbox enable_log"<?php echo ( empty( $nginx_helper_settings['enable_log'] ) ) ? ' style="display: none;"' : ''; ?>>
 		<h3 class="hndle">
 			<span><?php esc_html_e( 'Logging Options', 'nginx-helper' ); ?></span>
 		</h3>
diff --git a/admin/partials/nginx-helper-sidebar-display.php b/admin/partials/nginx-helper-sidebar-display.php
index 5670bf88..a3f4a387 100644
--- a/admin/partials/nginx-helper-sidebar-display.php
+++ b/admin/partials/nginx-helper-sidebar-display.php
@@ -34,7 +34,7 @@
 		<p>
 			<?php
 				printf(
-					wp_kses( "%1$s <a href='%2$s'>%3$s</a>.", array( 'a' => array( 'href' => array() ) ) ),
+					wp_kses( '%1$s <a href=\'%2$s\'>%3$s</a>.', array( 'a' => array( 'href' => array() ) ) ),
 					esc_html__( 'Please use our', 'nginx-helper' ), esc_url( 'http://rtcamp.com/support/forum/wordpress-nginx/' ), esc_html__( 'free support forum', 'nginx-helper' )
 				);
 			?>
diff --git a/includes/class-nginx-helper-activator.php b/includes/class-nginx-helper-activator.php
index c6e0ebd7..ec179928 100644
--- a/includes/class-nginx-helper-activator.php
+++ b/includes/class-nginx-helper-activator.php
@@ -12,6 +12,10 @@
  *
  * @author     rtCamp
  */
+
+/**
+ * Class Nginx_Helper_Activator
+ */
 class Nginx_Helper_Activator {
 
 	/**
@@ -19,11 +23,15 @@ class Nginx_Helper_Activator {
 	 * Schedule event to check log file size daily.
 	 *
 	 * @since    2.0.0
+	 *
+	 * @global Nginx_Helper_Admin $nginx_helper_admin
 	 */
 	public static function activate() {
-		global $wp_roles, $nginx_helper_admin;
+
+		global $nginx_helper_admin;
 
 		$path = $nginx_helper_admin->functional_asset_path();
+
 		if ( ! is_dir( $path ) ) {
 			mkdir( $path );
 		}
@@ -35,16 +43,21 @@ public static function activate() {
 		$role = get_role( 'administrator' );
 
 		if ( empty( $role ) ) {
+
 			update_site_option(
 				'rt_wp_nginx_helper_init_check',
 				__( 'Sorry, you need to be an administrator to use Nginx Helper', 'nginx-helper' )
 			);
+
 			return;
+
 		}
 
 		$role->add_cap( 'Nginx Helper | Config' );
 		$role->add_cap( 'Nginx Helper | Purge cache' );
 
 		wp_schedule_event( time(), 'daily', 'rt_wp_nginx_helper_check_log_file_size_daily' );
+
 	}
+
 }
diff --git a/includes/class-nginx-helper-deactivator.php b/includes/class-nginx-helper-deactivator.php
index c767f92f..354c42d0 100644
--- a/includes/class-nginx-helper-deactivator.php
+++ b/includes/class-nginx-helper-deactivator.php
@@ -32,6 +32,7 @@ public static function deactivate() {
 		$role = get_role( 'administrator' );
 		$role->remove_cap( 'Nginx Helper | Config' );
 		$role->remove_cap( 'Nginx Helper | Purge cache' );
+
 	}
 
 }
diff --git a/includes/class-nginx-helper-i18n.php b/includes/class-nginx-helper-i18n.php
index 11ae7d83..826d9769 100644
--- a/includes/class-nginx-helper-i18n.php
+++ b/includes/class-nginx-helper-i18n.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * Define the internationalization functionality
  *
@@ -54,7 +53,8 @@ public function load_plugin_textdomain() {
 	 * Set the domain equal to that of the specified domain.
 	 *
 	 * @since    2.0.0
-	 * @param    string    $domain    The domain that represents the locale of this plugin.
+	 *
+	 * @param    string $domain The domain that represents the locale of this plugin.
 	 */
 	public function set_domain( $domain ) {
 		$this->domain = $domain;
diff --git a/includes/class-nginx-helper-loader.php b/includes/class-nginx-helper-loader.php
index e449c641..d1aceeeb 100644
--- a/includes/class-nginx-helper-loader.php
+++ b/includes/class-nginx-helper-loader.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * Register all actions and filters for the plugin
  *
@@ -18,7 +17,9 @@
  * run function to execute the list of actions and filters.
  *
  * @package    nginx-helper
+ *
  * @subpackage nginx-helper/includes
+ *
  * @author     rtCamp
  */
 class Nginx_Helper_Loader {
@@ -27,8 +28,10 @@ class Nginx_Helper_Loader {
 	 * The array of actions registered with WordPress.
 	 *
 	 * @since    2.0.0
+	 *
 	 * @access   protected
-	 * @var      array    $actions    The actions registered with WordPress to fire when the plugin loads.
+	 *
+	 * @var      array $actions The actions registered with WordPress to fire when the plugin loads.
 	 */
 	protected $actions;
 
@@ -36,8 +39,10 @@ class Nginx_Helper_Loader {
 	 * The array of filters registered with WordPress.
 	 *
 	 * @since    2.0.0
+	 *
 	 * @access   protected
-	 * @var      array    $filters    The filters registered with WordPress to fire when the plugin loads.
+	 *
+	 * @var      array $filters The filters registered with WordPress to fire when the plugin loads.
 	 */
 	protected $filters;
 
@@ -57,11 +62,12 @@ public function __construct() {
 	 * Add a new action to the collection to be registered with WordPress.
 	 *
 	 * @since    2.0.0
-	 * @param      string               $hook             The name of the WordPress action that is being registered.
-	 * @param      object               $component        A reference to the instance of the object on which the action is defined.
-	 * @param      string               $callback         The name of the function definition on the $component.
-	 * @param      int      Optional    $priority         The priority at which the function should be fired.
-	 * @param      int      Optional    $accepted_args    The number of arguments that should be passed to the $callback.
+	 *
+	 * @param      string $hook The name of the WordPress action that is being registered.
+	 * @param      object $component A reference to the instance of the object on which the action is defined.
+	 * @param      string $callback The name of the function definition on the $component.
+	 * @param      int    $priority The priority at which the function should be fired.
+	 * @param      int    $accepted_args The number of arguments that should be passed to the $callback.
 	 */
 	public function add_action( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
 		$this->actions = $this->add( $this->actions, $hook, $component, $callback, $priority, $accepted_args );
@@ -71,11 +77,12 @@ public function add_action( $hook, $component, $callback, $priority = 10, $accep
 	 * Add a new filter to the collection to be registered with WordPress.
 	 *
 	 * @since    2.0.0
-	 * @param      string               $hook             The name of the WordPress filter that is being registered.
-	 * @param      object               $component        A reference to the instance of the object on which the filter is defined.
-	 * @param      string               $callback         The name of the function definition on the $component.
-	 * @param      int      Optional    $priority         The priority at which the function should be fired.
-	 * @param      int      Optional    $accepted_args    The number of arguments that should be passed to the $callback.
+	 *
+	 * @param      string $hook The name of the WordPress filter that is being registered.
+	 * @param      object $component A reference to the instance of the object on which the filter is defined.
+	 * @param      string $callback The name of the function definition on the $component.
+	 * @param      int    $priority The priority at which the function should be fired.
+	 * @param      int    $accepted_args The number of arguments that should be passed to the $callback.
 	 */
 	public function add_filter( $hook, $component, $callback, $priority = 10, $accepted_args = 1 ) {
 		$this->filters = $this->add( $this->filters, $hook, $component, $callback, $priority, $accepted_args );
@@ -86,14 +93,17 @@ public function add_filter( $hook, $component, $callback, $priority = 10, $accep
 	 * collection.
 	 *
 	 * @since    2.0.0
+	 *
 	 * @access   private
-	 * @param      array                $hooks            The collection of hooks that is being registered (that is, actions or filters).
-	 * @param      string               $hook             The name of the WordPress filter that is being registered.
-	 * @param      object               $component        A reference to the instance of the object on which the filter is defined.
-	 * @param      string               $callback         The name of the function definition on the $component.
-	 * @param      int      Optional    $priority         The priority at which the function should be fired.
-	 * @param      int      Optional    $accepted_args    The number of arguments that should be passed to the $callback.
-	 * @return   type                                   The collection of actions and filters registered with WordPress.
+	 *
+	 * @param      array  $hooks The collection of hooks that is being registered (that is, actions or filters).
+	 * @param      string $hook The name of the WordPress filter that is being registered.
+	 * @param      object $component A reference to the instance of the object on which the filter is defined.
+	 * @param      string $callback The name of the function definition on the $component.
+	 * @param      int    $priority The priority at which the function should be fired.
+	 * @param      int    $accepted_args The number of arguments that should be passed to the $callback.
+	 *
+	 * @return   array The collection of actions and filters registered with WordPress.
 	 */
 	private function add( $hooks, $hook, $component, $callback, $priority, $accepted_args ) {
 
diff --git a/includes/class-nginx-helper.php b/includes/class-nginx-helper.php
index fd7d228d..5f6dd462 100644
--- a/includes/class-nginx-helper.php
+++ b/includes/class-nginx-helper.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The file that defines the core plugin class
  *
@@ -35,7 +34,7 @@ class Nginx_Helper {
 	 *
 	 * @since    2.0.0
 	 * @access   protected
-	 * @var      Plugin_Name_Loader    $loader    Maintains and registers all hooks for the plugin.
+	 * @var      Nginx_Helper_Loader    $loader    Maintains and registers all hooks for the plugin.
 	 */
 	protected $loader;
 
@@ -64,7 +63,7 @@ class Nginx_Helper {
 	 * @access   public
 	 * @var      string    $minium_WP
 	 */
-	protected $minimum_wp;
+	protected $minimum_WP;
 
 	/**
 	 * Define the core functionality of the plugin.
@@ -102,7 +101,6 @@ public function __construct() {
 	 * - Nginx_Helper_Loader. Orchestrates the hooks of the plugin.
 	 * - Nginx_Helper_i18n. Defines internationalization functionality.
 	 * - Nginx_Helper_Admin. Defines all hooks for the admin area.
-	 * - Nginx_Helper_Public. Defines all hooks for the public side of the site.
 	 *
 	 * Create an instance of the loader which will be used to register the hooks
 	 * with WordPress.
@@ -161,28 +159,37 @@ private function set_locale() {
 	}
 
 	/**
-	 * Register all of the hooks related to the admin area functionality
-	 * of the plugin.
+	 * Register all of the hooks related to the admin area functionality of the plugin.
 	 *
 	 * @since    2.0.0
 	 * @access   private
 	 */
 	private function define_admin_hooks() {
+
 		global $nginx_helper_admin, $nginx_purger;
 
 		$nginx_helper_admin = new Nginx_Helper_Admin( $this->get_plugin_name(), $this->get_version() );
 
-		if ( ! empty( $nginx_helper_admin->options['cache_method'] ) && $nginx_helper_admin->options['cache_method'] == 'enable_redis' ) {
+		// Defines global variables.
+		if ( ! empty( $nginx_helper_admin->options['cache_method'] ) && $nginx_helper_admin->options['cache_method'] === 'enable_redis' ) {
+
 			if ( class_exists( 'Redis' ) ) { // Use PHP5-Redis extension if installed.
+
 				require_once plugin_dir_path( dirname( __FILE__ ) ) . 'admin/class-phpredis-purger.php';
 				$nginx_purger = new PhpRedis_Purger();
+
 			} else {
+
 				require_once plugin_dir_path( dirname( __FILE__ ) ) . 'admin/class-predis-purger.php';
 				$nginx_purger = new Predis_Purger();
+
 			}
+
 		} else {
+
 			require_once plugin_dir_path( dirname( __FILE__ ) ) . 'admin/class-fastcgi-purger.php';
 			$nginx_purger = new FastCGI_Purger();
+
 		}
 
 		$this->loader->add_action( 'admin_enqueue_scripts', $nginx_helper_admin, 'enqueue_styles' );
@@ -203,12 +210,12 @@ private function define_admin_hooks() {
 		$this->loader->add_action( 'add_init', $nginx_helper_admin, 'update_map' );
 
 		// Add actions to purge.
-		$this->loader->add_action( 'wp_insert_comment', $nginx_purger, 'purgePostOnComment', 200, 2 );
-		$this->loader->add_action( 'transition_comment_status', $nginx_purger, 'purgePostOnCommentChange', 200, 3 );
+		$this->loader->add_action( 'wp_insert_comment', $nginx_purger, 'purge_post_on_comment', 200, 2 );
+		$this->loader->add_action( 'transition_comment_status', $nginx_purger, 'purge_post_on_comment_change', 200, 3 );
 		$this->loader->add_action( 'transition_post_status', $nginx_helper_admin, 'set_future_post_option_on_future_status', 20, 3 );
 		$this->loader->add_action( 'delete_post', $nginx_helper_admin, 'unset_future_post_option_on_delete', 20, 1 );
-		$this->loader->add_action( 'nm_check_log_file_size_daily', $nginx_purger, 'checkAndTruncateLogFile', 100, 1 );
-		$this->loader->add_action( 'edit_attachment', $nginx_purger, 'purgeImageOnEdit', 100, 1 );
+		$this->loader->add_action( 'nm_check_log_file_size_daily', $nginx_purger, 'check_and_truncate_log_file', 100, 1 );
+		$this->loader->add_action( 'edit_attachment', $nginx_purger, 'purge_image_on_edit', 100, 1 );
 		$this->loader->add_action( 'wpmu_new_blog', $nginx_helper_admin, 'update_new_blog_options', 10, 1 );
 		$this->loader->add_action( 'transition_post_status', $nginx_purger, 'purge_on_post_moved_to_trash', 20, 3 );
 		$this->loader->add_action( 'edit_term', $nginx_purger, 'purge_on_term_taxonomy_edited', 20, 3 );
@@ -216,24 +223,8 @@ private function define_admin_hooks() {
 		$this->loader->add_action( 'check_ajax_referer', $nginx_purger, 'purge_on_check_ajax_referer', 20, 2 );
 		$this->loader->add_action( 'admin_init', $nginx_helper_admin, 'purge_all' );
 
-		// expose action to allow other plugins to purge the cache
-		$this->loader->add_action( 'rt_nginx_helper_purge_all', $nginx_purger, 'purgeAll' );
-	}
-
-	/**
-	 * Register all of the hooks related to the public-facing functionality
-	 * of the plugin.
-	 *
-	 * @since    2.0.0
-	 * @access   private
-	 */
-	private function define_public_hooks() {
-
-		$plugin_public = new Nginx_Helper_Public( $this->get_plugin_name(), $this->get_version() );
-
-		$this->loader->add_action( 'wp_enqueue_scripts', $plugin_public, 'enqueue_styles' );
-		$this->loader->add_action( 'wp_enqueue_scripts', $plugin_public, 'enqueue_scripts' );
-
+		// expose action to allow other plugins to purge the cache.
+		$this->loader->add_action( 'rt_nginx_helper_purge_all', $nginx_purger, 'purge_all' );
 	}
 
 	/**
@@ -260,7 +251,8 @@ public function get_plugin_name() {
 	 * The reference to the class that orchestrates the hooks with the plugin.
 	 *
 	 * @since     2.0.0
-	 * @return    Nginx_Helper_Loader    Orchestrates the hooks of the plugin.
+	 *
+	 * @return Nginx_Helper_Loader Orchestrates the hooks of the plugin.
 	 */
 	public function get_loader() {
 		return $this->loader;
@@ -280,21 +272,27 @@ public function get_version() {
 	 * Check wp version.
 	 *
 	 * @since     2.0.0
-	 * @global type $wp_version
+	 *
+	 * @global string $wp_version
+	 *
 	 * @return boolean
 	 */
 	public function required_wp_version() {
+
 		global $wp_version;
 
-		$wp_ok = version_compare( $wp_version, $this->minimum_wp, '>=' );
+		$wp_ok = version_compare( $wp_version, $this->minimum_WP, '>=' );
 
 		if ( false === $wp_ok ) {
+
 			add_action( 'admin_notices', array( &$this, 'display_notices' ) );
 			add_action( 'network_admin_notices', array( &$this, 'display_notices' ) );
 			return false;
+
 		}
 
 		return true;
+
 	}
 
 	/**
diff --git a/includes/index.php b/includes/index.php
index e71af0ef..f0dd56b9 100644
--- a/includes/index.php
+++ b/includes/index.php
@@ -1 +1,8 @@
-<?php // Silence is golden
\ No newline at end of file
+<?php
+/**
+ * Silence is golden.
+ *
+ * @package    nginx-helper
+ */
+
+// Silence.
diff --git a/index.php b/index.php
index e71af0ef..f0dd56b9 100644
--- a/index.php
+++ b/index.php
@@ -1 +1,8 @@
-<?php // Silence is golden
\ No newline at end of file
+<?php
+/**
+ * Silence is golden.
+ *
+ * @package    nginx-helper
+ */
+
+// Silence.
diff --git a/nginx-helper.php b/nginx-helper.php
index f0ea767b..400e90d9 100644
--- a/nginx-helper.php
+++ b/nginx-helper.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * The plugin bootstrap file
  *
@@ -22,7 +21,7 @@
  * Text Domain:       nginx-helper
  * Domain Path:       /languages
  * Requires at least: 3.0
- * Tested up to: 4.2.2
+ * Tested up to: 4.9.8
  */
 
 // If this file is called directly, abort.
@@ -81,6 +80,7 @@ function deactivate_nginx_helper() {
  * @since    2.0.0
  */
 function run_nginx_helper() {
+
 	global $nginx_helper;
 
 	$nginx_helper = new Nginx_Helper();
diff --git a/phpcs.xml b/phpcs.xml
index 01c21a0f..09f23b77 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -8,31 +8,44 @@
          p flag: Show progress of the run.
          s flag: Show sniff codes in all reports.
     -->
-    <arg value="ps"/>
-
-    <!-- Strip the filepaths down to the relevant bit. -->
-    <arg name="basepath" value="./"/>
+    <arg value="psvn"/>
 
     <!-- Check up to 8 files simultanously. -->
     <arg name="parallel" value="8"/>
 
-    <!-- Only check the PHP, CSS and SCSS files. JS files are checked separately with JSCS and JSHint. -->
-    <arg name="extensions" value="php,css,scss/css"/>
+    <!-- Only check the PHP files. JS files are checked separately with JSCS and JSHint. -->
+    <arg name="extensions" value="php"/>
 
     <!-- Check all files in this directory and the directories below it. -->
     <file>.</file>
 
     <!-- Exclude folders. -->
     <exclude-pattern>*/languages/*</exclude-pattern>
+    <exclude-pattern>*/admin/predis.php</exclude-pattern> <!-- Predis library file -->
 
     <!-- Include the WordPress standard. -->
-    <rule ref="WordPress-VIP-Go">
-        <exclude name="WordPress.Files.FileName.UnderscoresNotAllowed" />
-        <exclude name="WordPress.NamingConventions.ValidVariableName.NotSnakeCase" />
-        <exclude name="WordPress.NamingConventions.ValidVariableName.NotSnakeCaseMemberVar" />
+    <rule ref="WordPress-VIP-Go"/>
+    <rule ref="WordPress-Docs"/>
+
+    <!-- Verify that the text_domain is set to the desired text-domain.
+		 Multiple valid text domains can be provided as a comma-delimited list. -->
+    <rule ref="WordPress.WP.I18n">
+        <properties>
+            <property name="text_domain" type="array" value="nginx-helper" />
+        </properties>
+    </rule>
+
+    <!-- Verify that no WP functions are used which are deprecated or have been removed.
+		 The minimum version set here should be in line with the minimum WP version
+		 as set in the "Requires at least" tag in the readme.txt file. -->
+    <rule ref="WordPress.WP.DeprecatedFunctions">
+        <properties>
+            <property name="minimum_supported_version" value="3.0" />
+        </properties>
     </rule>
 
+    <!-- Include sniffs for PHP cross-version compatibility. -->
     <rule ref="PHPCompatibility"/>
-    <config name="testVersion" value="7.0-"/>
+    <config name="testVersion" value="5.3-99.0"/>
 
 </ruleset>
\ No newline at end of file
diff --git a/readme.txt b/readme.txt
index 45544ea3..94dc13af 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,8 +5,8 @@ Tags: nginx, cache, purge, nginx map, nginx cache, maps, fastcgi, proxy, redis,
 License: GPLv2 or later (of-course)
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 Requires at least: 3.0
-Tested up to: 4.9.5
-Stable tag: 1.9.11
+Tested up to: 4.9.8
+Stable tag: 1.9.12
 
 Cleans nginx's fastcgi/proxy cache or redis-cache whenever a post is edited/published. Also does a few more things.
 
@@ -92,6 +92,19 @@ To purge a page immediately, follow these instructions:
 * Just open this in a browser and the page will be purged instantly.
 * Needless to say, this won't work, if you have a page or taxonomy called 'purge'.
 
+= FAQ - Nginx Redis Cache =
+
+**Q. Can I override the redis hostname, port and prefix?**
+
+Yes, you can force override the redis hostname, port or prefix by defining constant in wp-config.php. For example:
+
+```
+define('RT_WP_NGINX_HELPER_REDIS_HOSTNAME', '10.0.0.1');
+
+define('RT_WP_NGINX_HELPER_REDIS_PORT', '6000');
+
+define('RT_WP_NGINX_HELPER_REDIS_PREFIX', 'page-cache:');
+```
 
 = FAQ - Nginx Map =
 
@@ -114,6 +127,9 @@ Please post your problem in [our free support forum](http://community.rtcamp.com
 
 == Changelog ==
 
+= 1.9.12 =
+* Allow override Redis host/port/prefix by defining constant in wp-config.php [#152](https://github.com/rtCamp/nginx-helper/pull/152) - by [vincent-lu](https://github.com/vincent-lu)
+
 = 1.9.11 =
 * Fixed issue where permalinks without trailing slash does not purging [#124](https://github.com/rtCamp/nginx-helper/issues/124) - by Patrick
 * Check whether role exist or not before removing capability. [#134](https://github.com/rtCamp/nginx-helper/pull/134) - by [1gor](https://github.com/1gor)
@@ -344,6 +360,5 @@ Fix url escaping [#82](https://github.com/rtCamp/nginx-helper/pull/82) - by
 
 == Upgrade Notice ==
 
-= 1.9.11 =
-* Fixed issue where permalinks without trailing slash does not purging [#124](https://github.com/rtCamp/nginx-helper/issues/124) - by Patrick
-* Check whether role exist or not before removing capability. [#134](https://github.com/rtCamp/nginx-helper/pull/134) - by [1gor](https://github.com/1gor)
+= 1.9.12 =
+* Allow override Redis host/port/prefix by defining constant in wp-config.php [#152](https://github.com/rtCamp/nginx-helper/pull/152) - by [vincent-lu](https://github.com/vincent-lu)
diff --git a/uninstall.php b/uninstall.php
index 4f070208..dfa8d76a 100644
--- a/uninstall.php
+++ b/uninstall.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * Fired when the plugin is uninstalled.
  *
diff --git a/wp-cli.php b/wp-cli.php
index fe5e4b65..134a1bc5 100644
--- a/wp-cli.php
+++ b/wp-cli.php
@@ -1,6 +1,9 @@
 <?php
 /**
  * Contains class for WP-CLI command.
+ *
+ * @since      2.0.0
+ * @package    nginx-helper
  */
 
 /**
@@ -12,6 +15,9 @@
 
 if ( ! class_exists( 'Nginx_Helper_WP_CLI_Command' ) ) {
 
+	/**
+	 * Class Nginx_Helper_WP_CLI_Command
+	 */
 	class Nginx_Helper_WP_CLI_Command extends WP_CLI_Command {
 
 		/**
@@ -21,14 +27,17 @@ class Nginx_Helper_WP_CLI_Command extends WP_CLI_Command {
 		 * wp nginx-helper purge-all
 		 *
 		 * @subcommand purge-all
+		 *
+		 * @param array $args Arguments.
+		 * @param array $assoc_args Arguments in associative array.
 		 */
 		public function purge_all( $args, $assoc_args ) {
 
 			global $nginx_purger;
 
-			$nginx_purger->purgeAll();
+			$nginx_purger->purge_all();
 
-			$message = __( 'Purged Everything!' );
+			$message = __( 'Purged Everything!', 'nginx-helper' );
 			WP_CLI::success( $message );
 
 		}

From d3c134c7ea62fbf983eced9b3248d732157dbd15 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Fri, 12 Oct 2018 15:09:45 +0530
Subject: [PATCH 3/8] Ignore filesytem operations in phpcs

---
 phpcs.xml | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/phpcs.xml b/phpcs.xml
index 09f23b77..d3bc1193 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -24,7 +24,16 @@
     <exclude-pattern>*/admin/predis.php</exclude-pattern> <!-- Predis library file -->
 
     <!-- Include the WordPress standard. -->
-    <rule ref="WordPress-VIP-Go"/>
+    <rule ref="WordPress-VIP-Go">
+        <exclude name="WordPress.VIP.FileSystemWritesDisallow.directory_mkdir" />
+        <exclude name="WordPress.WP.AlternativeFunctions.file_system_read_fopen" />
+        <exclude name="WordPress.VIP.FileSystemWritesDisallow.file_ops_is_writable" />
+        <exclude name="WordPress.WP.AlternativeFunctions.file_system_read_fclose" />
+        <exclude name="WordPress.VIP.FileSystemWritesDisallow.file_ops_fwrite" />
+        <exclude name="WordPress.VIP.FileSystemWritesDisallow.directory_rmdir" />
+        <exclude name="WordPress.WP.AlternativeFunctions.file_system_read_fwrite" />
+        <exclude name="WordPress.VIP.FileSystemWritesDisallow.file_ops_unlink" />
+    </rule>
     <rule ref="WordPress-Docs"/>
 
     <!-- Verify that the text_domain is set to the desired text-domain.

From f50344fa38b46fa77a45b60d50da2506f3e0b534 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Fri, 12 Oct 2018 18:45:56 +0530
Subject: [PATCH 4/8] options not saving issue resolved and default value added

---
 admin/class-nginx-helper-admin.php            | 48 +++++++++----------
 .../partials/nginx-helper-general-options.php | 42 ++++++++++------
 2 files changed, 51 insertions(+), 39 deletions(-)

diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index e9f831fd..d3fed453 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -242,24 +242,22 @@ public function nginx_helper_default_settings() {
 
 		return array(
 			'enable_purge'                     => 0,
-			'cache_method'                     => '',
-			'purge_method'                     => '',
+			'cache_method'                     => 'enable_fastcgi',
+			'purge_method'                     => 'get_request',
 			'enable_map'                       => 0,
 			'enable_log'                       => 0,
 			'log_level'                        => 'INFO',
 			'log_filesize'                     => '5',
 			'enable_stamp'                     => 0,
-			'purge_homepage_on_new'            => 0,
-			'purge_homepage_on_edit'           => 0,
-			'purge_homepage_on_del'            => 0,
-			'purge_archive_on_new'             => 0,
-			'purge_archive_on_edit'            => 0,
-			'purge_archive_on_del'             => 0,
+			'purge_homepage_on_edit'           => 1,
+			'purge_homepage_on_del'            => 1,
+			'purge_archive_on_edit'            => 1,
+			'purge_archive_on_del'             => 1,
 			'purge_archive_on_new_comment'     => 0,
 			'purge_archive_on_deleted_comment' => 0,
-			'purge_page_on_mod'                => 0,
-			'purge_page_on_new_comment'        => 0,
-			'purge_page_on_deleted_comment'    => 0,
+			'purge_page_on_mod'                => 1,
+			'purge_page_on_new_comment'        => 1,
+			'purge_page_on_deleted_comment'    => 1,
 			'redis_hostname'                   => '127.0.0.1',
 			'redis_port'                       => '6379',
 			'redis_prefix'                     => 'nginx-cache:',
@@ -275,21 +273,23 @@ public function nginx_helper_default_settings() {
 	 */
 	public function nginx_helper_settings() {
 
-		$options = get_site_option( 'rt_wp_nginx_helper_options', array( 'redis_hostname' => '', 'redis_port' => '', 'redis_prefix' => '' ) );
+		$options = get_site_option( 'rt_wp_nginx_helper_options', array( 'redis_hostname' => '127.0.0.1', 'redis_port' => '6379', 'redis_prefix' => 'nginx-cache:' ) );
 
-		$options['redis_hostname'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? RT_WP_NGINX_HELPER_REDIS_HOSTNAME : $options['redis_hostname'];
-		$options['redis_port']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? RT_WP_NGINX_HELPER_REDIS_PORT : $options['redis_port'];
-		$options['redis_prefix']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? RT_WP_NGINX_HELPER_REDIS_PREFIX : $options['redis_prefix'];
-
-		$options['redis_hostname_readonly'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? true : false;
-		$options['redis_port_readonly']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? true : false;
-		$options['redis_prefix_readonly']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? true : false;
-
-		return wp_parse_args(
+		$data = wp_parse_args(
 			$options,
 			$this->nginx_helper_default_settings()
 		);
 
+		$data['redis_hostname'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? RT_WP_NGINX_HELPER_REDIS_HOSTNAME : $data['redis_hostname'];
+		$data['redis_port']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? RT_WP_NGINX_HELPER_REDIS_PORT : $data['redis_port'];
+		$data['redis_prefix']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? RT_WP_NGINX_HELPER_REDIS_PREFIX : $data['redis_prefix'];
+
+		$data['redis_hostname_readonly'] = defined( 'RT_WP_NGINX_HELPER_REDIS_HOSTNAME' ) ? true : false;
+		$data['redis_port_readonly']     = defined( 'RT_WP_NGINX_HELPER_REDIS_PORT' ) ? true : false;
+		$data['redis_prefix_readonly']   = defined( 'RT_WP_NGINX_HELPER_REDIS_PREFIX' ) ? true : false;
+
+		return $data;
+
 	}
 
 	/**
@@ -432,7 +432,7 @@ public function add_timestamps() {
 				"-->\n" .
 				'<!--Visit http://wordpress.org/extend/plugins/nginx-helper/faq/ for more details-->';
 
-		echo wp_kses( $timestamps, array() );
+		echo $timestamps;//wp_kses( $timestamps, array() );
 
 	}
 
@@ -636,7 +636,7 @@ public function purge_all() {
 
 		global $nginx_purger;
 
-		$action = get_query_var( 'nginx_helper_action', false );
+		$action = filter_input( INPUT_GET, 'nginx_helper_action', FILTER_SANITIZE_STRING );
 
 		if ( empty( $action ) ) {
 			return;
@@ -671,7 +671,7 @@ public function purge_all() {
 	 * Dispay plugin notices.
 	 */
 	public function display_notices() {
-		echo '<div class="updated"><p>' . esc_html_e( 'Purge initiated', 'nginx-helper' ) . '</p></div>';
+		echo '<div class="updated"><p>' . esc_html__( 'Purge initiated', 'nginx-helper' ) . '</p></div>';
 	}
 
 }
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index eb910e0f..2b7dc5b9 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -15,17 +15,29 @@
 $error_log_filesize = false;
 
 $args = array(
-	'enable_purge'           => FILTER_SANITIZE_STRING,
-	'is_submit'              => FILTER_SANITIZE_STRING,
-	'redis_hostname'         => FILTER_SANITIZE_STRING,
-	'redis_port'             => FILTER_SANITIZE_STRING,
-	'redis_prefix'           => FILTER_SANITIZE_STRING,
-	'purge_homepage_on_edit' => FILTER_SANITIZE_STRING,
-	'purge_homepage_on_del'  => FILTER_SANITIZE_STRING,
-	'purge_url'              => FILTER_SANITIZE_STRING,
-	'log_level'              => FILTER_SANITIZE_STRING,
-	'log_filesize'           => FILTER_SANITIZE_STRING,
-	'smart_http_expire_save' => FILTER_SANITIZE_STRING,
+	'enable_purge'                     => FILTER_SANITIZE_STRING,
+	'enable_stamp'                     => FILTER_SANITIZE_STRING,
+	'purge_method'                     => FILTER_SANITIZE_STRING,
+	'is_submit'                        => FILTER_SANITIZE_STRING,
+	'redis_hostname'                   => FILTER_SANITIZE_STRING,
+	'redis_port'                       => FILTER_SANITIZE_STRING,
+	'redis_prefix'                     => FILTER_SANITIZE_STRING,
+	'purge_homepage_on_edit'           => FILTER_SANITIZE_STRING,
+	'purge_homepage_on_del'            => FILTER_SANITIZE_STRING,
+	'purge_url'                        => FILTER_SANITIZE_STRING,
+	'log_level'                        => FILTER_SANITIZE_STRING,
+	'log_filesize'                     => FILTER_SANITIZE_STRING,
+	'smart_http_expire_save'           => FILTER_SANITIZE_STRING,
+	'cache_method'                     => FILTER_SANITIZE_STRING,
+	'enable_map'                       => FILTER_SANITIZE_STRING,
+	'enable_log'                       => FILTER_SANITIZE_STRING,
+	'purge_archive_on_edit'            => FILTER_SANITIZE_STRING,
+	'purge_archive_on_del'             => FILTER_SANITIZE_STRING,
+	'purge_archive_on_new_comment'     => FILTER_SANITIZE_STRING,
+	'purge_archive_on_deleted_comment' => FILTER_SANITIZE_STRING,
+	'purge_page_on_mod'                => FILTER_SANITIZE_STRING,
+	'purge_page_on_new_comment'        => FILTER_SANITIZE_STRING,
+	'purge_page_on_deleted_comment'    => FILTER_SANITIZE_STRING,
 );
 
 $all_inputs = filter_input_array(INPUT_POST, $args);
@@ -102,7 +114,7 @@
 				<table class="form-table">
 					<tr valign="top">
 						<td>
-							<input type="radio" value="enable_fastcgi" id="cache_method_fastcgi" name="cache_method" <?php checked( $nginx_helper_settings['cache_method'], 'enable_fastcgi' ); ?> />
+							<input type="radio" value="enable_fastcgi" id="cache_method_fastcgi" name="cache_method" <?php echo checked( $nginx_helper_settings['cache_method'], 'enable_fastcgi' ); ?> />
 							<label for="cache_method_fastcgi">
 								<?php
 									printf(
@@ -115,7 +127,7 @@
 					</tr>
 					<tr valign="top">
 						<td>
-							<input type="radio" value="enable_redis" id="cache_method_redis" name="cache_method" <?php checked( $nginx_helper_settings['cache_method'], 'enable_redis' ); ?> />
+							<input type="radio" value="enable_redis" id="cache_method_redis" name="cache_method" <?php echo checked( $nginx_helper_settings['cache_method'], 'enable_redis' ); ?> />
 							<label for="cache_method_redis">
 								<?php printf( esc_html__( 'Redis cache', 'nginx-helper' ) ); ?>
 							</label>
@@ -125,7 +137,7 @@
 			</div> <!-- End of .inside -->
 		</div>
 		<div class="enable_purge">
-			<div class="postbox cache_method_fastcgi"<?php echo ( ! empty( $nginx_helper_settings['enable_purge'] ) && 'enable_fastcgi' === $nginx_helper_settings['cache_method'] ) ? '' : ' style="display: none;"'; ?>>
+			<div class="postbox cache_method_fastcgi"  <?php echo ( ! empty( $nginx_helper_settings['enable_purge'] ) && 'enable_fastcgi' === $nginx_helper_settings['cache_method'] ) ? '' : 'style="display: none;"'; ?> >
 				<h3 class="hndle">
 					<span><?php esc_html_e( 'Purge Method', 'nginx-helper' ); ?></span>
 				</h3>
@@ -508,7 +520,7 @@
 					</tr>
 					<tr valign="top">
 						<td>
-							<input type="checkbox" value="1" id="enable_stamp" name="enable_stamp"<?php checked( $nginx_helper_settings['enable_stamp'], 1 ); ?> />
+							<input type="checkbox" value="1" id="enable_stamp" name="enable_stamp" <?php checked( $nginx_helper_settings['enable_stamp'], 1 ); ?> />
 							<label for="enable_stamp">
 								<?php esc_html_e( 'Enable Nginx Timestamp in HTML', 'nginx-helper' ); ?>
 							</label>

From 4d9370ddb7d4eacbdf1b83aea8f579f23f097d0b Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Mon, 15 Oct 2018 11:53:35 +0530
Subject: [PATCH 5/8] Input type check and get value of nginx helper action

---
 admin/class-nginx-helper-admin.php              | 9 +++++++--
 admin/partials/nginx-helper-general-options.php | 2 +-
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index d3fed453..aae9a0fe 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -636,7 +636,13 @@ public function purge_all() {
 
 		global $nginx_purger;
 
-		$action = filter_input( INPUT_GET, 'nginx_helper_action', FILTER_SANITIZE_STRING );
+		$method = filter_input( INPUT_SERVER, 'REQUEST_METHOD', FILTER_SANITIZE_STRING );
+
+		if ( 'post' === $method ) {
+			$action = filter_input( INPUT_POST, 'nginx_helper_action', FILTER_SANITIZE_STRING );
+		} else {
+			$action = filter_input( INPUT_GET, 'nginx_helper_action', FILTER_SANITIZE_STRING );
+		}
 
 		if ( empty( $action ) ) {
 			return;
@@ -655,7 +661,6 @@ public function purge_all() {
 		}
 
 		check_admin_referer( 'nginx_helper-purge_all' );
-
 		switch ( $action ) {
 			case 'purge':
 				$nginx_purger->purge_all();
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index 2b7dc5b9..95dd9045 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -12,7 +12,7 @@
 
 global $nginx_helper_admin;
 
-$error_log_filesize = false;
+	$error_log_filesize = false;
 
 $args = array(
 	'enable_purge'                     => FILTER_SANITIZE_STRING,

From c1dc32055d71c60bc9a94e4a9f82ad372c4c4072 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Mon, 15 Oct 2018 12:46:11 +0530
Subject: [PATCH 6/8] timestamp content escaping added

---
 admin/class-nginx-helper-admin.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index aae9a0fe..47740276 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -432,7 +432,7 @@ public function add_timestamps() {
 				"-->\n" .
 				'<!--Visit http://wordpress.org/extend/plugins/nginx-helper/faq/ for more details-->';
 
-		echo $timestamps;//wp_kses( $timestamps, array() );
+		echo wp_kses( $timestamps, array() );
 
 	}
 
@@ -638,7 +638,7 @@ public function purge_all() {
 
 		$method = filter_input( INPUT_SERVER, 'REQUEST_METHOD', FILTER_SANITIZE_STRING );
 
-		if ( 'post' === $method ) {
+		if ( 'POST' === $method ) {
 			$action = filter_input( INPUT_POST, 'nginx_helper_action', FILTER_SANITIZE_STRING );
 		} else {
 			$action = filter_input( INPUT_GET, 'nginx_helper_action', FILTER_SANITIZE_STRING );

From 0a895b685a8f43ad1f9ddb5e1404b6c3bf02bed3 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Thu, 18 Oct 2018 12:21:22 +0530
Subject: [PATCH 7/8] Feedback changes on PR resolved

---
 admin/class-fastcgi-purger.php                |   7 +-
 admin/class-nginx-helper-admin.php            |  41 +++--
 admin/class-phpredis-purger.php               |   7 +-
 admin/class-predis-purger.php                 |   7 +-
 admin/class-purger.php                        |  12 +-
 .../partials/nginx-helper-general-options.php | 155 ++++++++++++------
 .../partials/nginx-helper-sidebar-display.php |   9 +-
 7 files changed, 156 insertions(+), 82 deletions(-)

diff --git a/admin/class-fastcgi-purger.php b/admin/class-fastcgi-purger.php
index 1489f953..e2b394db 100644
--- a/admin/class-fastcgi-purger.php
+++ b/admin/class-fastcgi-purger.php
@@ -96,7 +96,12 @@ public function custom_purge_urls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
+		/**
+		 * Allow plugins/themes to modify/extend urls.
+		 *
+		 * @param array $purge_urls URLs which needs to be purged.
+		 * @param bool  $wildcard   If wildcard in url is allowed or not. default false.
+		 */
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, false );
 
 		switch ( $nginx_helper_admin->options['purge_method'] ) {
diff --git a/admin/class-nginx-helper-admin.php b/admin/class-nginx-helper-admin.php
index 47740276..99c6bcd8 100644
--- a/admin/class-nginx-helper-admin.php
+++ b/admin/class-nginx-helper-admin.php
@@ -103,7 +103,7 @@ public function __construct( $plugin_name, $version ) {
 	 *
 	 * @since    2.0.0
 	 *
-	 * @param string $hook Hook.
+	 * @param string $hook The current admin page.
 	 */
 	public function enqueue_styles( $hook ) {
 
@@ -133,7 +133,7 @@ public function enqueue_styles( $hook ) {
 	 *
 	 * @since    2.0.0
 	 *
-	 * @param string $hook Hook.
+	 * @param string $hook The current admin page.
 	 */
 	public function enqueue_scripts( $hook ) {
 
@@ -377,9 +377,15 @@ public function nginx_helper_get_feeds() {
 				foreach ( $rss_items as $item ) {
 					?>
 						<li role="listitem">
-							<a href='<?php echo esc_url( $item->get_permalink() ); ?>' title='<?php echo esc_attr_e( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ); ?>'>
-								<?php echo esc_html( $item->get_title() ); ?>
-							</a>
+							<?php
+							echo wp_kses(
+								sprintf(
+									'<a href="%1$s" title="%2$s">%3$s</a>',
+									esc_url( $item->get_permalink() ), esc_attr__( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ), esc_html( $item->get_title() )
+								),
+								array( 'strong' => array(), 'a' => array( 'href' => array(), 'title' => array() ) )
+							);
+							?>
 						</li>
 					<?php
 				}
@@ -535,7 +541,7 @@ public function update_map() {
 	 * @global object $nginx_purger Nginx purger variable.
 	 *
 	 * @param string $new_status New status.
-	 * @param string $old_status Ols status.
+	 * @param string $old_status Old status.
 	 * @param object $post Post object.
 	 */
 	public function set_future_post_option_on_future_status( $new_status, $old_status, $post ) {
@@ -555,18 +561,21 @@ public function set_future_post_option_on_future_status( $new_status, $old_statu
 
 		}
 
-		if ( 'future' === $new_status ) {
-
-			if ( $post && 'future' === $post->post_status &&
-			   ( ( 'post' === $post->post_type || 'page' === $post->post_type ) ||
-			   ( isset( $this->options['custom_post_types_recognized'] ) &&
-			   in_array( $post->post_type, $this->options['custom_post_types_recognized'], true ) ) ) ) {
+		if (
+			'future' === $new_status && $post && 'future' === $post->post_status &&
+			(
+		        ( 'post' === $post->post_type || 'page' === $post->post_type ) ||
+		        (
+		        	isset( $this->options['custom_post_types_recognized'] ) &&
+		            in_array( $post->post_type, $this->options['custom_post_types_recognized'], true )
+		        )
+			)
+		) {
 
-				$nginx_purger->log( 'Set/update future_posts option ( post id = ' . $post->ID . ' and blog id = ' . $blog_id . ' )' );
-				$this->options['future_posts'][ $blog_id ][ $post->ID ] = strtotime( $post->post_date_gmt ) + 60;
-				update_site_option( 'rt_wp_nginx_helper_global_options', $this->options );
+			$nginx_purger->log( 'Set/update future_posts option ( post id = ' . $post->ID . ' and blog id = ' . $blog_id . ' )' );
+			$this->options['future_posts'][ $blog_id ][ $post->ID ] = strtotime( $post->post_date_gmt ) + 60;
+			update_site_option( 'rt_wp_nginx_helper_global_options', $this->options );
 
-			}
 		}
 
 	}
diff --git a/admin/class-phpredis-purger.php b/admin/class-phpredis-purger.php
index 2365bfe9..6736164a 100644
--- a/admin/class-phpredis-purger.php
+++ b/admin/class-phpredis-purger.php
@@ -114,7 +114,12 @@ public function custom_purge_urls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
+		/**
+		 * Allow plugins/themes to modify/extend urls.
+		 *
+		 * @param array $purge_urls URLs which needs to be purged.
+		 * @param bool  $wildcard   If wildcard in url is allowed or not. default true.
+		 */
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
diff --git a/admin/class-predis-purger.php b/admin/class-predis-purger.php
index aa9d0cf4..3918608f 100644
--- a/admin/class-predis-purger.php
+++ b/admin/class-predis-purger.php
@@ -122,7 +122,12 @@ public function custom_purge_urls() {
 		$purge_urls = isset( $nginx_helper_admin->options['purge_url'] ) && ! empty( $nginx_helper_admin->options['purge_url'] ) ?
 			explode( "\r\n", $nginx_helper_admin->options['purge_url'] ) : array();
 
-		// Allow plugins/themes to modify/extend urls. Pass urls array in first parameter, second says if wildcards are allowed.
+		/**
+		 * Allow plugins/themes to modify/extend urls.
+		 *
+		 * @param array $purge_urls URLs which needs to be purged.
+		 * @param bool  $wildcard   If wildcard in url is allowed or not. default true.
+		 */
 		$purge_urls = apply_filters( 'rt_nginx_helper_purge_urls', $purge_urls, true );
 
 		if ( is_array( $purge_urls ) && ! empty( $purge_urls ) ) {
diff --git a/admin/class-purger.php b/admin/class-purger.php
index 0c5c0fed..9a40cb02 100644
--- a/admin/class-purger.php
+++ b/admin/class-purger.php
@@ -108,15 +108,11 @@ public function purge_post_on_comment_change( $newstatus, $oldstatus, $comment )
 			case 'spam':
 			case 'unapproved':
 			case 'trash':
-				if ( 'approve' === $oldstatus ) {
+				if ( 'approve' === $oldstatus && 1 === (int)$nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
 
-					if ( 1 === (int)$nginx_helper_admin->options['purge_page_on_deleted_comment'] ) {
-
-						$this->log( '* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...' );
-						$this->log( '* * * * *' );
-						$this->purge_post( $_post_id );
-
-					}
+					$this->log( '* Comment ( ' . $_comment_id . ' ) removed as ( ' . $newstatus . ' ). Post ( ' . $_post_id . ' ) purging...' );
+					$this->log( '* * * * *' );
+					$this->purge_post( $_post_id );
 
 				}
 				break;
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index 95dd9045..f1293465 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -117,9 +117,12 @@
 							<input type="radio" value="enable_fastcgi" id="cache_method_fastcgi" name="cache_method" <?php echo checked( $nginx_helper_settings['cache_method'], 'enable_fastcgi' ); ?> />
 							<label for="cache_method_fastcgi">
 								<?php
-									printf(
-										wp_kses( '%1$s (<a target="_blank" href="%2$s" title="%3$s">%4$s</a>)', array( 'strong' => array(), 'a' => array( 'href' => array(), 'title' => array() ) ) ),
-										esc_html__( 'nginx Fastcgi cache', 'nginx-helper' ), esc_url( $nginx_setting_link ), esc_attr__( 'External settings for nginx', 'nginx-helper' ), esc_html__( 'requires external settings for nginx', 'nginx-helper' )
+								echo wp_kses(
+										sprintf(
+											'%1$s (<a target="_blank" href="%2$s" title="%3$s">%4$s</a>)',
+											esc_html__( 'nginx Fastcgi cache', 'nginx-helper' ), esc_url( $nginx_setting_link ), esc_attr__( 'External settings for nginx', 'nginx-helper' ), esc_html__( 'requires external settings for nginx', 'nginx-helper' )
+										),
+										array( 'strong' => array(), 'a' => array( 'href' => array(), 'title' => array() ) )
 									);
 								?>
 							</label>
@@ -156,17 +159,23 @@
 										<input type="radio" value="get_request" id="purge_method_get_request" name="purge_method" <?php checked( $nginx_helper_settings['purge_method'], 'get_request' ); ?>>
 										&nbsp;
 										<?php
-											printf(
-												wp_kses( '%1$s  <strong>PURGE/url</strong> %2$s', array( 'strong' => array() ) ),
-												esc_html__( 'Using a GET request to', 'nginx-helper' ), esc_html__( '(Default option)', 'nginx-helper' )
+											echo wp_kses(
+												sprintf(
+													'%1$s  <strong>PURGE/url</strong> %2$s',
+													esc_html__( 'Using a GET request to', 'nginx-helper' ), esc_html__( '(Default option)', 'nginx-helper' )
+												),
+												array( 'strong' => array() )
 											);
 										?>
 										<br />
 										<small>
 											<?php
-												printf(
-													wp_kses( '%1$s <strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge</a></strong> %2$s.', array( 'strong' => array(), 'a' => array( 'href' => array() ) ) ),
-													esc_html__( 'Uses the', 'nginx-helper' ), esc_html__( 'module', 'nginx-helper' )
+												echo wp_kses(
+													sprintf(
+														'%1$s <strong><a href="https://github.com/FRiCKLE/ngx_cache_purge">ngx_cache_purge</a></strong> %2$s.',
+														esc_html__( 'Uses the', 'nginx-helper' ), esc_html__( 'module', 'nginx-helper' )
+													),
+													array( 'strong' => array(), 'a' => array( 'href' => array() ) )
 												);
 											?>
 										</small>
@@ -181,9 +190,12 @@
 										<br />
 										<small>
 											<?php
-												printf(
-													wp_kses( '%1$s<strong>RT_WP_NGINX_HELPER_CACHE_PATH</strong>. %2$s', array( 'strong' => array(), ) ),
-													esc_html__( 'Checks for matching cache file in ', 'nginx-helper' ), esc_html__( 'Does not require any other modules. Requires that the cache be stored on the same server as WordPress. You must also be using the default nginx cache options (levels=1:2) and (fastcgi_cache_key "$scheme$request_method$host$request_uri").', 'nginx-helper' )
+												echo wp_kses(
+													sprintf(
+														'%1$s<strong>RT_WP_NGINX_HELPER_CACHE_PATH</strong>. %2$s',
+														esc_html__( 'Checks for matching cache file in ', 'nginx-helper' ), esc_html__( 'Does not require any other modules. Requires that the cache be stored on the same server as WordPress. You must also be using the default nginx cache options (levels=1:2) and (fastcgi_cache_key "$scheme$request_method$host$request_uri").', 'nginx-helper' )
+													),
+													array( 'strong' => array() )
 												);
 											?>
 										</small>
@@ -272,9 +284,12 @@
 									<input type="checkbox" value="1" id="purge_homepage_on_edit" name="purge_homepage_on_edit" <?php checked( $nginx_helper_settings['purge_homepage_on_edit'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -293,9 +308,12 @@
 									<input type="checkbox" value="1" id="purge_homepage_on_del" name="purge_homepage_on_del" <?php checked( $nginx_helper_settings['purge_homepage_on_del'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -324,9 +342,12 @@
 									<input type="checkbox" value="1" id="purge_page_on_mod" name="purge_page_on_mod" <?php checked( $nginx_helper_settings['purge_page_on_mod'], 1 ); ?>>
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'published', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'published', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -345,9 +366,12 @@
 									<input type="checkbox" value="1" id="purge_page_on_new_comment" name="purge_page_on_new_comment" <?php checked( $nginx_helper_settings['purge_page_on_new_comment'], 1 ); ?>>
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -366,9 +390,12 @@
 									<input type="checkbox" value="1" id="purge_page_on_deleted_comment" name="purge_page_on_deleted_comment" <?php checked( $nginx_helper_settings['purge_page_on_deleted_comment'], 1 ); ?>>
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -399,9 +426,12 @@
 									<input type="checkbox" value="1" id="purge_archive_on_edit" name="purge_archive_on_edit" <?php checked( $nginx_helper_settings['purge_archive_on_edit'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>%5$s<strong>%6$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'modified', 'nginx-helper' ), esc_html__( ' or ', 'nginx-helper' ), esc_html__( 'added', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -420,9 +450,12 @@
 									<input type="checkbox" value="1" id="purge_archive_on_del" name="purge_archive_on_del"<?php checked( $nginx_helper_settings['purge_archive_on_del'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'published post', 'nginx-helper' ), esc_html__( ' (or page/custom post) is ', 'nginx-helper' ), esc_html__( 'trashed', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -442,9 +475,12 @@
 									<input type="checkbox" value="1" id="purge_archive_on_new_comment" name="purge_archive_on_new_comment" <?php checked( $nginx_helper_settings['purge_archive_on_new_comment'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'approved/published', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -463,9 +499,12 @@
 									<input type="checkbox" value="1" id="purge_archive_on_deleted_comment" name="purge_archive_on_deleted_comment" <?php checked( $nginx_helper_settings['purge_archive_on_deleted_comment'], 1 ); ?> />
 									&nbsp;
 									<?php
-										printf(
-											wp_kses( '%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.', array( 'strong' => array(), ) ),
-											esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+										echo wp_kses(
+											sprintf(
+												'%1$s<strong>%2$s</strong>%3$s<strong>%4$s</strong>.',
+												esc_html__( 'when a ', 'nginx-helper' ), esc_html__( 'comment', 'nginx-helper' ), esc_html__( ' is ', 'nginx-helper' ), esc_html__( 'unapproved/deleted', 'nginx-helper' )
+											),
+											array( 'strong' => array(), )
 										);
 									?>
 								</label>
@@ -545,10 +584,13 @@
 					<span class="error fade" style="display: block">
 						<p>
 							<?php
-							printf(
-								wp_kses( '%1$s<br /><br />%2$s<strong>%3$s</strong>', array( 'br' => array(), 'strong' => array(), ) ),
-								esc_html__( 'Can\'t write on map file.', 'nginx-helper' ), esc_html__( 'Check you have write permission on ', 'nginx-helper' ), esc_url( $log_path . 'map.conf' )
-							);
+								echo wp_kses(
+									sprintf(
+										'%1$s<br /><br />%2$s<strong>%3$s</strong>',
+										esc_html__( 'Can\'t write on map file.', 'nginx-helper' ), esc_html__( 'Check you have write permission on ', 'nginx-helper' ), esc_url( $log_path . 'map.conf' )
+									),
+									array( 'br' => array(), 'strong' => array(), )
+								);
 							?>
 						</p>
 					</span>
@@ -559,9 +601,12 @@
 					<tr>
 						<th>
 						<?php
-						printf(
-							wp_kses( '%1$s<br /><small>%2$s</small>', array( 'br' => array(), 'small' => array(), ) ),
-							esc_html__( 'Nginx Map path to include in nginx settings', 'nginx-helper' ), esc_html__( '(recommended)', 'nginx-helper' )
+						echo wp_kses(
+							sprintf(
+								'%1$s<br /><small>%2$s</small>',
+								esc_html__( 'Nginx Map path to include in nginx settings', 'nginx-helper' ), esc_html__( '(recommended)', 'nginx-helper' )
+							),
+							array( 'br' => array(), 'small' => array(), )
 						);
 						?>
 						</th>
@@ -574,9 +619,12 @@
 					<tr>
 						<th>
 							<?php
-							printf(
-								wp_kses( '%1$s<br />%2$s<br /><small>%3$s</small>', array( 'br' => array(), 'small' => array(), ) ),
-								esc_html__( 'Or,', 'nginx-helper' ), esc_html__( 'Text to manually copy and paste in nginx settings', 'nginx-helper' ), esc_html__( '(if your network is small and new sites are not added frequently)', 'nginx-helper' )
+							echo wp_kses(
+								sprintf(
+									'%1$s<br />%2$s<br /><small>%3$s</small>',
+									esc_html__( 'Or,', 'nginx-helper' ), esc_html__( 'Text to manually copy and paste in nginx settings', 'nginx-helper' ), esc_html__( '(if your network is small and new sites are not added frequently)', 'nginx-helper' )
+								),
+								array( 'br' => array(), 'small' => array(), )
 							);
 							?>
 						</th>
@@ -610,10 +658,13 @@
 				<span class="error fade" style="display : block">
 					<p>
 					<?php
-						printf(
-							wp_kses( '%1$s<br /><br />%2$s<strong>%3$s</strong>', array( 'br' => array(), 'strong' => array(), ) ),
+					echo wp_kses(
+						sprintf(
+							'%1$s<br /><br />%2$s<strong>%3$s</strong>',
 							esc_html__( 'Can\'t write on log file.', 'nginx-helper' ), esc_html__( 'Check you have write permission on ', 'nginx-helper' ), esc_url( $log_path . 'nginx.log' )
-						);
+						),
+						array( 'br' => array(), 'strong' => array(), )
+					);
 					?>
 					</p>
 				</span>
diff --git a/admin/partials/nginx-helper-sidebar-display.php b/admin/partials/nginx-helper-sidebar-display.php
index a3f4a387..5d386fff 100644
--- a/admin/partials/nginx-helper-sidebar-display.php
+++ b/admin/partials/nginx-helper-sidebar-display.php
@@ -33,10 +33,13 @@
 	<div class="inside">
 		<p>
 			<?php
-				printf(
-					wp_kses( '%1$s <a href=\'%2$s\'>%3$s</a>.', array( 'a' => array( 'href' => array() ) ) ),
+			echo wp_kses(
+				sprintf(
+					'%1$s <a href=\'%2$s\'>%3$s</a>.',
 					esc_html__( 'Please use our', 'nginx-helper' ), esc_url( 'http://rtcamp.com/support/forum/wordpress-nginx/' ), esc_html__( 'free support forum', 'nginx-helper' )
-				);
+				),
+				array( 'a' => array( 'href' => array() ) )
+			);
 			?>
 		</p>
 	</div>

From d3441d7490f021aeb5667c679d634354501bafc6 Mon Sep 17 00:00:00 2001
From: Vaishali Agola <vaishali.agola@rtcamp.com>
Date: Thu, 18 Oct 2018 20:55:59 +0530
Subject: [PATCH 8/8] Feedback changes on PR for functions resolved

---
 admin/class-fastcgi-purger.php                | 20 +++++++++----------
 admin/class-purger.php                        | 20 +++++++++----------
 admin/partials/nginx-helper-admin-display.php |  9 +++++++--
 .../partials/nginx-helper-general-options.php |  2 +-
 includes/class-nginx-helper.php               |  2 +-
 5 files changed, 29 insertions(+), 24 deletions(-)

diff --git a/admin/class-fastcgi-purger.php b/admin/class-fastcgi-purger.php
index e2b394db..44f299b9 100644
--- a/admin/class-fastcgi-purger.php
+++ b/admin/class-fastcgi-purger.php
@@ -46,14 +46,14 @@ public function purge_url( $url, $feed = true ) {
 					$_url_purge .= '?' . $parse['query'];
 				}
 
-				$this->_delete_cache_file_for( $_url_purge );
+				$this->delete_cache_file_for( $_url_purge );
 
 				if ( $feed ) {
 
 					$feed_url = rtrim( $_url_purge_base, '/' ) . '/feed/';
-					$this->_delete_cache_file_for( $feed_url );
-					$this->_delete_cache_file_for( $feed_url . 'atom/' );
-					$this->_delete_cache_file_for( $feed_url . 'rdf/' );
+					$this->delete_cache_file_for( $feed_url );
+					$this->delete_cache_file_for( $feed_url . 'atom/' );
+					$this->delete_cache_file_for( $feed_url . 'rdf/' );
 
 				}
 				break;
@@ -68,14 +68,14 @@ public function purge_url( $url, $feed = true ) {
 					$_url_purge .= '?' . $parse['query'];
 				}
 
-				$this->_do_remote_get( $_url_purge );
+				$this->do_remote_get( $_url_purge );
 
 				if ( $feed ) {
 
 					$feed_url = rtrim( $_url_purge_base, '/' ) . '/feed/';
-					$this->_do_remote_get( $feed_url );
-					$this->_do_remote_get( $feed_url . 'atom/' );
-					$this->_do_remote_get( $feed_url . 'rdf/' );
+					$this->do_remote_get( $feed_url );
+					$this->do_remote_get( $feed_url . 'atom/' );
+					$this->do_remote_get( $feed_url . 'rdf/' );
 
 				}
 				break;
@@ -119,7 +119,7 @@ public function custom_purge_urls() {
 
 							$purge_url = $_url_purge_base . $purge_url;
 							$this->log( '- Purging URL | ' . $purge_url );
-							$this->_delete_cache_file_for( $purge_url );
+							$this->delete_cache_file_for( $purge_url );
 
 						}
 
@@ -143,7 +143,7 @@ public function custom_purge_urls() {
 
 							$purge_url = $_url_purge_base . $purge_url;
 							$this->log( '- Purging URL | ' . $purge_url );
-							$this->_do_remote_get( $purge_url );
+							$this->do_remote_get( $purge_url );
 
 						}
 
diff --git a/admin/class-purger.php b/admin/class-purger.php
index 9a40cb02..a4538a07 100644
--- a/admin/class-purger.php
+++ b/admin/class-purger.php
@@ -340,7 +340,7 @@ private function _purge_by_options( $post_id, $blog_id, $_purge_page, $_purge_ar
 	 *
 	 * @return bool
 	 */
-	public function _delete_cache_file_for( $url ) {
+	protected function delete_cache_file_for( $url ) {
 
 		// Verify cache path is set.
 		if ( ! defined( 'RT_WP_NGINX_HELPER_CACHE_PATH' ) ) {
@@ -391,7 +391,7 @@ public function _delete_cache_file_for( $url ) {
 	 *
 	 * @param string $url URL to do remote request.
 	 */
-	public function _do_remote_get( $url ) {
+	protected function do_remote_get( $url ) {
 
 		$response = wp_remote_get( $url );
 
@@ -633,8 +633,8 @@ private function _purge_personal_urls() {
 
 		if ( isset( $nginx_helper_admin->options['purgeable_url']['urls'] ) ) {
 
-			foreach ( $nginx_helper_admin->options['purgeable_url']['urls'] as $u ) {
-				$this->purge_url( $u, false );
+			foreach ( $nginx_helper_admin->options['purgeable_url']['urls'] as $url ) {
+				$this->purge_url( $url, false );
 			}
 
 		} else {
@@ -1079,13 +1079,14 @@ public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
 
 		$this->log( __( 'Term taxonomy edited or deleted', 'nginx-helper' ) );
 
-		$term = get_term( $term_id, $taxon );
+		$term           = get_term( $term_id, $taxon );
+		$current_filter = current_filter();
 
-		if ( 'edit_term' === current_filter() && ! is_wp_error( $term ) && ! empty( $term ) ) {
+		if ( 'edit_term' === $current_filter && ! is_wp_error( $term ) && ! empty( $term ) ) {
 
 			$this->log( sprintf( __( "Term taxonomy '%1\$s' edited, (tt_id '%2\$d', term_id '%3\$d', taxonomy '%4\$s')", 'nginx-helper' ), $term->name, $tt_id, $term_id, $taxon ) );
 
-		} elseif ( 'delete_term' === current_filter() ) {
+		} elseif ( 'delete_term' === $current_filter ) {
 
 			$this->log( sprintf( __( "A term taxonomy has been deleted from taxonomy '%1\$s', (tt_id '%2\$d', term_id '%3\$d')", 'nginx-helper' ), $taxon, $term_id, $tt_id ) );
 
@@ -1100,12 +1101,11 @@ public function purge_on_term_taxonomy_edited( $term_id, $tt_id, $taxon ) {
 	/**
 	 * Check ajax referrer on purge.
 	 *
-	 * @param string $action Action.
-	 * @param string $result Result.
+	 * @param string $action The Ajax nonce action.
 	 *
 	 * @return bool
 	 */
-	public function purge_on_check_ajax_referer( $action, $result ) {
+	public function purge_on_check_ajax_referer( $action ) {
 
 		switch ( $action ) {
 
diff --git a/admin/partials/nginx-helper-admin-display.php b/admin/partials/nginx-helper-admin-display.php
index 98736332..fe254787 100644
--- a/admin/partials/nginx-helper-admin-display.php
+++ b/admin/partials/nginx-helper-admin-display.php
@@ -32,8 +32,13 @@
 				foreach ( $this->settings_tabs as $setting_tab => $setting_name ) {
 
 					$class = ( $setting_tab === $current_setting_tab ) ? ' nav-tab-active' : '';
-					echo '<a class="nav-tab' . esc_attr( $class ) . '" href="?page=nginx&tab=' . esc_attr( $setting_name['menu_slug'] ) . '">' . esc_html( $setting_name['menu_title'] ) . '</a>';
-
+					echo wp_kses(
+						sprintf(
+							'<a class="nav-tab%1$s" href="?page=nginx&tab=%2$s">%3$s</a>',
+							esc_attr( $class ), esc_attr( $setting_name['menu_slug'] ), esc_html( $setting_name['menu_title'] )
+						),
+						array( 'a' => array( 'href' => array(), 'class' => array(), ) )
+					);
 				}
 				echo '</h2>';
 
diff --git a/admin/partials/nginx-helper-general-options.php b/admin/partials/nginx-helper-general-options.php
index f1293465..5ec2b4ef 100644
--- a/admin/partials/nginx-helper-general-options.php
+++ b/admin/partials/nginx-helper-general-options.php
@@ -12,7 +12,7 @@
 
 global $nginx_helper_admin;
 
-	$error_log_filesize = false;
+$error_log_filesize = false;
 
 $args = array(
 	'enable_purge'                     => FILTER_SANITIZE_STRING,
diff --git a/includes/class-nginx-helper.php b/includes/class-nginx-helper.php
index 5f6dd462..3937c424 100644
--- a/includes/class-nginx-helper.php
+++ b/includes/class-nginx-helper.php
@@ -220,7 +220,7 @@ private function define_admin_hooks() {
 		$this->loader->add_action( 'transition_post_status', $nginx_purger, 'purge_on_post_moved_to_trash', 20, 3 );
 		$this->loader->add_action( 'edit_term', $nginx_purger, 'purge_on_term_taxonomy_edited', 20, 3 );
 		$this->loader->add_action( 'delete_term', $nginx_purger, 'purge_on_term_taxonomy_edited', 20, 3 );
-		$this->loader->add_action( 'check_ajax_referer', $nginx_purger, 'purge_on_check_ajax_referer', 20, 2 );
+		$this->loader->add_action( 'check_ajax_referer', $nginx_purger, 'purge_on_check_ajax_referer', 20 );
 		$this->loader->add_action( 'admin_init', $nginx_helper_admin, 'purge_all' );
 
 		// expose action to allow other plugins to purge the cache.