Cache: Add wp_cache_*_multiple functions.

Add new caching functions named `wp_cache_add_multiple`, `wp_cache_set_multiple` and `wp_cache_delete_multiple`. All of these functions allow for an array of data to be passed, so that multiple cache objects can be created / edited / deleted in a single function call. This follows on from [47938] where the `wp_cache_get_multiple` function was introduced and allowed for multiple cache objects to be received in one call. 

Props: spacedmonkey, tillkruess, adamsilverstein, flixos90, mitogh, pbearne. 
Fixes: #54574.


git-svn-id: https://develop.svn.wordpress.org/trunk@52700 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/cache.php

@@ -145,6 +145,65 @@ function wp_cache_get_multiple( $keys, $group = '', $force = false ) {
 	return $wp_object_cache->get_multiple( $keys, $group, $force );
 }
 
+
+/**
+ * Delete multiple values from the cache in one call.
+ *
+ * @since 6.0.0
+ *
+ * @see WP_Object_Cache::delete_multiple()
+ * @global WP_Object_Cache $wp_object_cache Object cache global instance.
+ *
+ * @param array  $keys  Array of keys under which the cache to deleted.
+ * @param string $group Optional. Where the cache contents are grouped. Default empty.
+ * @return array Array of return values organized into groups.
+ */
+function wp_cache_delete_multiple( array $keys, $group = '' ) {
+	global $wp_object_cache;
+
+	return $wp_object_cache->delete_multiple( $keys, $group );
+}
+
+/**
+ * Add multiple values to the cache in one call.
+ *
+ * @since 6.0.0
+ *
+ * @see WP_Object_Cache::add_multiple()
+ * @global WP_Object_Cache $wp_object_cache Object cache global instance.
+ *
+ * @param array  $data  Array of key and value to be set.
+ * @param string $group Optional. Where the cache contents are grouped. Default empty.
+ * @param int    $expire Optional. When to expire the cache contents, in seconds.
+ *                           Default 0 (no expiration).
+ * @return array Array of return values.
+ */
+function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) {
+	global $wp_object_cache;
+
+	return $wp_object_cache->add_multiple( $data, $group, $expire );
+}
+
+/**
+ * Set multiple values to the cache in one call.
+ *
+ * @since 6.0.0
+ *
+ * @see WP_Object_Cache::set_multiple()
+ * @global WP_Object_Cache $wp_object_cache Object cache global instance.
+ *
+ * @param array  $data  Array of key and value to be set.
+ * @param string $group Optional. Where the cache contents are grouped. Default empty.
+ * @param int    $expire Optional. When to expire the cache contents, in seconds.
+ *                           Default 0 (no expiration).
+ * @return array Array of return values.
+ */
+function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) {
+	global $wp_object_cache;
+
+	return $wp_object_cache->set_multiple( $data, $group, $expire );
+}
+
 /**
  * Increment numeric cache item's value
  *