Use strict option for in_array() function (#1929)

* Use strict option for in_array()

* Add changelog

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Backward Compatibility Breaks
 ### Added
 ### Changed
+* Changed `Elastica\Status::indexExists()`, `Elastica\Status::aliasExists()` and `Elastica\Status::getIndicesWithAlias()` signatures [#1929](https://github.com/ruflin/Elastica/pull/1929)
 * Replaced `call_user_func()` and `call_user_func_array()` by direct calls [#1923](https://github.com/ruflin/Elastica/pull/1923)
 * Replaced legacy constant `CURLINFO_HTTP_CODE` by `CURLINFO_RESPONSE_CODE` [#1931](https://github.com/ruflin/Elastica/pull/1931)
 * Updated `php-cs-fixer` to `2.18.3` [#1915](https://github.com/ruflin/Elastica/pull/1915)

src/AbstractUpdateAction.php

@@ -321,7 +321,7 @@ public function getRefresh()
     {
         $refresh = $this->getParam('refresh');
 
-        return \in_array($refresh, [Reindex::REFRESH_TRUE, Reindex::REFRESH_FALSE])
+        return \in_array($refresh, [Reindex::REFRESH_TRUE, Reindex::REFRESH_FALSE], true)
             ? Reindex::REFRESH_TRUE === $refresh
             : $refresh;
     }

src/Status.php

@@ -71,35 +71,29 @@ public function getIndexNames()
     /**
      * Checks if the given index exists.
      *
-     * @param string $name Index name to check
-     *
      * @return bool True if index exists
      */
-    public function indexExists($name)
+    public function indexExists(string $name)
     {
-        return \in_array($name, $this->getIndexNames());
+        return \in_array($name, $this->getIndexNames(), true);
     }
 
     /**
      * Checks if the given alias exists.
      *
-     * @param string $name Alias name
-     *
      * @return bool True if alias exists
      */
-    public function aliasExists($name)
+    public function aliasExists(string $name)
     {
         return \count($this->getIndicesWithAlias($name)) > 0;
     }
 
     /**
      * Returns an array with all indices that the given alias name points to.
      *
-     * @param string $alias Alias name
-     *
-     * @return array|Index[] List of Elastica\Index
+     * @return Index[]
      */
-    public function getIndicesWithAlias($alias)
+    public function getIndicesWithAlias(string $alias)
     {
         // TODO: Use only GetAlias when dropping support for elasticsearch/elasticsearch 7.x
         $endpoint = \class_exists(GetAlias::class) ? new GetAlias() : new Get();