diff options
| -rw-r--r-- | src/wp-includes/plugin.php | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/wp-includes/plugin.php b/src/wp-includes/plugin.php index 77c1eb4ef6..bed67a9d96 100644 --- a/src/wp-includes/plugin.php +++ b/src/wp-includes/plugin.php @@ -984,7 +984,8 @@ function _wp_call_all_hook( $args ) { * or may not exist. * @param int $priority Unused. The order in which the functions * associated with a particular action are executed. - * @return string Unique function ID for usage as array key. + * @return string|null Unique function ID for usage as array key. + * Null if a valid `$callback` is not passed. */ function _wp_filter_build_unique_id( $hook_name, $callback, $priority ) { if ( is_string( $callback ) ) { @@ -1005,4 +1006,6 @@ function _wp_filter_build_unique_id( $hook_name, $callback, $priority ) { // Static calling. return $callback[0] . '::' . $callback[1]; } + + return null; } |