関数 has_action()
定義ファイル :/blog/wp-includes/plugin.php
has_action()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | /** * Check if any action has been registered for a hook. * * @since 2.5.0 * * @see has_filter() has_action() is an alias of has_filter(). * * @param string $tag The name of the action hook. * @param callback|bool $function_to_check Optional. The callback to check for. Default false. * @return bool|int If $function_to_check is omitted, returns boolean for whether the hook has * anything registered. When checking a specific function, the priority of that * hook is returned, or false if the function is not attached. When using the * $function_to_check argument, this function may return a non-boolean value * that evaluates to false (e.g.) 0, so use the === operator for testing the * return value. */ function has_action($tag, $function_to_check = false) { return has_filter($tag, $function_to_check); } |