Ticket #36088: 36088.patch

wp-includes/post.php

@@ -1826 +1826 @@
  *               field if $single is true.
  */
 function get_post_meta( $post_id, $key = '', $single = false ) {
-        return get_metadata('post', $post_id, $key, $single);
+        /**
+         * Filter the meta value.
+         *
+         * @since 4.5.0
+         *
+         * @param mixed  $value   Value of the post meta value.
+         * @param int    $post_id Post ID.
+         * @param string $key     The meta key to retrieve. By default, returns
+         *                        data for all keys.
+         * @param bool   $single  Whether to return a single value.
+         * @return mixed Will be an array if $single is false. Will be value of meta data
+         *               field if $single is true.
+         */
+        return apply_filters( 'post_meta', get_metadata( 'post', $post_id, $key, $single ), $post_id, $key, $single );
 }
 
 /**