functions.php

<?php
require get_template_directory() . '/inc/setting.php';
//setting
require get_template_directory() . '/inc/views.php';
//views
require get_template_directory() . '/inc/rewrite.php';
//页面伪静态
require get_template_directory() . '/inc/metabox.php';
//文章meta

//获取评论人数 by wpdaxue
function get_comments_users($postid = 0, $which = 0)
{
    $comments = get_comments('status=approve&type=comment&post_id=' . $postid);
    //获取文章的所有评论
    if ($comments) {
        $i = 0;
        $j = 0;
        $commentusers = array();
        foreach ($comments as $comment) {
            ++$i;
            if ($i == 1) {
                $commentusers[] = $comment->comment_author_email;
                ++$j;
            }
            if (!in_array($comment->comment_author_email, $commentusers)) {
                $commentusers[] = $comment->comment_author_email;
                ++$j;
            }
        }
        $output = array($j, $i);
        $which = ($which == 0) ? 0 : 1;
        return $output[$which];
        //返回评论人数
    }
    return 0;
    //没有评论返回0
}

//自动获取关键字 by suxing
function deel_keywords()
{
    global $s, $post;
    //声明$post全局变量
    $keywords = '';
    if (is_single()) {
        //if ( get_the_tags( $post->ID ) ) {
        //foreach ( get_the_tags( $post->ID ) as $tag ) $keywords .= $tag->name . ', ';
        //}<br>    //如果文章有标签，关键词为标签
        $category = get_the_category();
        $parent = get_cat_name($category[0]->category_parent);
        //echo $parent;//得到父级分类名称
        foreach (get_the_category($post->ID) as $category) $keywords .= $parent . ',' . $category->cat_name . ', ' . get_the_title();
        //关键词为父级分类名称，分类名称，文章标题
        //下面判断条件为不同模板
        $keywords = substr_replace($keywords, '', -2);
    }
    if ($keywords) {
        echo "<meta name=\"keywords\" content=\"$keywords\">\n";
    }
}
//关键字加入head头部代码
add_action('wp_head', 'deel_keywords');

//文章内时间以ago显示 by someone
function lb_time_since($older_date, $comment_date = false)
{
    $chunks = array(
        array(24 * 60 * 60, ' 天前'),
        array(60 * 60, ' 小时前'),
        array(60, ' 分钟前'),
        array(1, ' 秒前')
    );
    $newer_date = time();
    $since = abs($newer_date - $older_date);
    if ($since < 30 * 24 * 60 * 60) {
        for ($i = 0, $j = count($chunks); $i < $j; $i++) {
            $seconds = $chunks[$i][0];
            $name = $chunks[$i][1];
            if (($count = floor($since / $seconds)) != 0) {
                break;
            }
        }
        $output = $count . $name;
    } else {
        $output = $comment_date ? date('y-m-d', $older_date) : date('Y-m-d', $older_date);
    }

    return $output;
}

//后台提示信息
function remove_footer_admin()
{
    echo 'Theme <b style="letter-spacing:1px;">Tony</b> | Designed with <img draggable="false" class="emoji" alt="love" src="https://s.w.org/images/core/emoji/11/svg/2764.svg"> by <a href="https://www.ouorz.com" target="_blank">TonyHe</a> | 当前 <a href="https://github.com/HelipengTony/tony/releases" target="_blank">' . wp_get_theme()->get('Version') . '</a> 版本</p>';
}
add_filter('admin_footer_text', 'remove_footer_admin');

// 评论添加@ by someone
function comment_add_at($comment_text, $comment = '')
{
    if ($comment->comment_parent > 0) {
        $comment_text = '<span class="comment-at">@' . get_comment_author($comment->comment_parent) . '</span>' . $comment_text;
    }
    return $comment_text;
}
add_filter('comment_text', 'comment_add_at', 20, 2);

//插入文章内链 by suxing
//添加按钮
add_action('media_buttons_context', 'mee_insert_post_custom_button');
function mee_insert_post_custom_button($_var)
{
    $_var .= '<button type="button" id="insert-media-button" class="button insert-post-embed" data-editor="content"><span class="dashicons dashicons-pressthis"></span>插入文章</button><div class="smilies-wrap"></div><script>jQuery(document).ready(function(){jQuery(document).on("click", ".insert-post-embed",function(){var post_id=prompt("输入文章ID，多个文章，使用英文逗号隔开","");if (post_id!=null && post_id!=""){send_to_editor("[fa_insert_post ids="+ post_id +"]");}return false;});});</script>';
    return $_var;
}
//插入文章
function fa_insert_posts($atts, $content = null)
{
    extract(shortcode_atts(
        array(
            'ids' => ''
        ),
        $atts
    ));
    global $post;
    $content = '';
    $postids = explode(',', $ids);
    $inset_posts = get_posts(array('post__in' => $postids));
    foreach ($inset_posts as $key => $post) {
        setup_postdata($post);
        $content .= '<div class="warp-post-embed"><a style="text-decoration: none;" href="' . get_permalink() . '" target="_blank" ><div class="embed-content"><h2>' . get_the_title() . '</h2><p>' . wp_trim_words(get_the_excerpt(), 30) . '</p></div></a></div>';
    }
    wp_reset_postdata();
    return $content;
}
add_shortcode('fa_insert_post', 'fa_insert_posts');


//去除抖动
function wps_login_error()
{
    remove_action('login_head', 'wp_shake_js', 12);
}
add_action('login_head', 'wps_login_error');

//错误信息
function failed_login()
{
    return '密码不正确';
}
add_filter('login_errors', 'failed_login');

//防止黑客
//去除版本信息
function remove_version()
{
    return '';
}
add_filter('the_generator', 'remove_version');

//去除评论隐患
function lxtx_comment_body_class($content)
{
    $pattern = "/(.*?)([^>]*)author-([^>]*)(.*?)/i";
    $replacement = '$1$4';
    $content = preg_replace($pattern, $replacement, $content);
    return $content;
}
add_filter('comment_class', 'lxtx_comment_body_class');
add_filter('body_class', 'lxtx_comment_body_class');


//add post thumbnails
if (function_exists('add_theme_support')) {
    add_theme_support('post-thumbnails');
}

//根据上传时间重命名文件
add_filter('wp_handle_upload_prefilter', 'custom_upload_filter');
function custom_upload_filter($file)
{
    $info = pathinfo($file['name']);
    $ext = $info['extension'];
    $filedate = date('YmdHis') . rand(10, 99);
    //为了避免时间重复，再加一段2位的随机数
    $file['name'] = $filedate . '.' . $ext;
    return $file;
}


add_filter('wp_image_editors', 'change_graphic_lib');
function change_graphic_lib($array)
{
    return array('WP_Image_Editor_GD', 'WP_Image_Editor_Imagick');
}





/* WordPress REST API 接口添加 */
add_action('rest_api_init', 'wp_rest_insert_tag_links');

function wp_rest_insert_tag_links()
{

    register_rest_field(
        'post',
        'post_categories',
        array(
            'get_callback' => 'wp_rest_get_categories_links',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_excerpt',
        array(
            'get_callback' => 'wp_rest_get_plain_excerpt',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_date',
        array(
            'get_callback' => 'wp_rest_get_normal_date',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'page',
        'post_date',
        array(
            'get_callback' => 'wp_rest_get_normal_date',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_metas',
        array(
            'get_callback' => 'get_post_meta_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'page',
        'post_metas',
        array(
            'get_callback' => 'get_post_meta_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_img',
        array(
            'get_callback' => 'get_post_img_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_tags',
        array(
            'get_callback' => 'get_post_tags_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field(
        'post',
        'post_prenext',
        array(
            'get_callback' => 'get_post_prenext_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
    register_rest_field('post',
        'md_content',
        array(
            'get_callback' => 'get_post_content_for_api',
            'update_callback' => null,
            'schema' => null,
        )
    );
}

function get_post_content_for_api($post) {
    $content = get_post($post['id'])->post_content;
    return $content;
}

function wp_rest_get_categories_links($post)
{
    $post_categories = array();
    $categories = wp_get_post_terms($post['id'], 'category', array('fields' => 'all'));

    foreach ($categories as $term) {
        $term_link = get_term_link($term);
        if (is_wp_error($term_link)) {
            continue;
        }
        $post_categories[] = array('term_id' => $term->term_id, 'name' => $term->name, 'link' => $term_link);
    }
    return $post_categories;
}
function wp_rest_get_plain_excerpt($post)
{
    $excerpts = array();
    $excerpts['nine'] = wp_trim_words(get_the_excerpt($post['id']), 90);
    $excerpts['four'] = wp_trim_words(get_the_excerpt($post['id']), 45);
    return $excerpts;
}

function wp_rest_get_normal_date($post)
{
    if (get_option('king_date_format'))
        $format = get_option('king_date_format');
    else $format = 'd-m-y';
    $date = get_the_date($format, $post['id']);
    return $date;
}

function get_post_meta_for_api($post)
{
    $post_meta = array();
    $post_meta['views'] = get_post_meta($post['id'], 'post_views_count', true);
    $post_meta['author'] = get_user_by('ID', $post['author'])->display_name;
    $post_meta['link'] = get_post_meta($post['id'], 'link', true);
    $post_meta['img'] = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'full');
    $post_meta['title'] = get_the_title($post['id']);
    $tagsss = get_the_tags($post['id']);
    $post_meta['tag_name'] = $tagsss[0]->name;
    return $post_meta;
}

function get_post_img_for_api($post)
{
    $post_img = array();
    $post_img['url'] = get_the_post_thumbnail_url($post['id']);
    return $post_img;
}
/* WordPress REST API 接口添加 */

//获取全部分类
function admin_show_category()
{
    global $wpdb;
    $request = "SELECT $wpdb->terms.term_id, name FROM $wpdb->terms ";
    $request .= " LEFT JOIN $wpdb->term_taxonomy ON $wpdb->term_taxonomy.term_id = $wpdb->terms.term_id ";
    $request .= " WHERE $wpdb->term_taxonomy.taxonomy = 'category' ";
    $request .= " ORDER BY term_id asc";
    $categorys = $wpdb->get_results($request);
    echo "<h3>全部分类及ID</h4><ul style='height:50px'>";
    foreach ($categorys as $category) {
        echo  '<li style="margin-right: 10px;float:left;">' . $category->name . "（<code>" . $category->term_id . '</code>）</li>';
    }
    echo "</ul>";
}


//设置站点title
function site_page_title()
{
    if (is_home()) {
        bloginfo('name');
        echo " - ";
        bloginfo('description');
    } elseif (is_category()) {
        single_cat_title();
        echo " - ";
        bloginfo('name');
    } elseif (is_single() || is_page()) {
        single_post_title();
    } elseif (is_search()) {
        echo "搜索结果";
        echo " - ";
        bloginfo('name');
    } elseif (is_404()) {
        echo '没有找到页面';
    } else {
        wp_title('', true);
    }
}

//默认头像
add_filter('avatar_defaults', 'newgravatar');

function newgravatar($avatar_defaults)
{
    $myavatar = 'https://i.loli.net/2019/03/10/5c84adf73a7a2.jpg';
    $avatar_defaults[$myavatar] = "Tony主题默认头像";
    return $avatar_defaults;
}

//替换 Gravatar 头像为国内源
function tony_get_avatar($avatar)
{
    $avatar = preg_replace("/http:\/\/(www|\d).gravatar.com/", "https://gravatar.loli.net", $avatar);
    return $avatar;
}
add_filter('get_avatar', 'tony_get_avatar');

//标题描述
function get_tony_ms()
{
    if (get_option('king_ms') && !get_option('king_title_ms')) {
        echo get_option('king_ms');
    } elseif (get_option('king_title_ms')) {
        echo get_option('king_title_ms');
    } else {
        echo '未设置描述';
    }
}

//获取文章标签
function get_post_tags_for_api($post)
{
    $tag_term = array();
    $tags = wp_get_post_tags($post['id']);
    $i = 0;
    foreach ($tags as $tag) {
        $tag_term[$i]['url'] = get_tag_link($tag->term_id);
        $tag_term[$i]['name'] = $tag->name;
        $i++;
    }
    return $tag_term;
}

//获取上下篇文章
function get_post_prenext_for_api($post)
{
    $array = array();
    $prev_post = get_previous_post(false, '');
    $next_post = get_next_post(false, '');
    $array['prev'][0] = $prev_post->guid;
    $array['prev'][1] = $prev_post->post_title;
    $array['prev'][2] = wp_get_post_categories($prev_post->ID)[0];
    $array['next'][0] = $next_post->guid;
    $array['next'][1] = $next_post->post_title;
    $array['next'][2] = wp_get_post_categories($next_post->ID)[0];
    return $array;
}

//Tony 主题内置判断
function tony_func($key)
{
    switch ($key) {
        case 'echo_s_cate':
            if (get_option('king_cate_cate')) {
                echo get_option('king_cate_cate');
            } else {
                echo '0';
            }
            break;

        case 'echo_ph_cate':
            if (get_option('king_cate_cate_ph')) {
                echo get_option('king_cate_cate_ph');
            } else {
                echo 'XX';
            }
            break;

        case 'echo_logo':
            if (get_option('king_logo')) {
                echo get_option('king_logo');
            } else {
                echo 'https://static.ouorz.com/t.jpg';
            }
            break;


        default:
            break;
    }
}