Ticket #22174: 22174.diff

wp-includes/functions.php

@@ -3859 +3859 @@
  */
 function _get_non_cached_ids( $object_ids, $cache_key ) {
         $clean = array();
-        foreach ( $object_ids as $id ) {
-                $id = (int) $id;
-                if ( !wp_cache_get( $id, $cache_key ) ) {
-                        $clean[] = $id;
+        if ( function_exists( 'wp_cache_get_multi' ) ) {
+                $posts = wp_cache_get_multi( $object_ids, $cache_key );
+                $found_ids = wp_list_pluck( $posts, 'ID' );
+                $clean = array_diff( $object_ids, $found_ids );
+        } else {
+                foreach ( $object_ids as $id ) {
+                        $id = (int) $id;
+                        if ( !wp_cache_get( $id, $cache_key ) ) {
+                                $clean[] = $id;
+                        }
                 }
         }
-
         return $clean;
 }