/**
* Add a callback to an event queue, after a given event.
*
* @param string name
* @param array existing
* @param array callback
* @return boolean
*/
public static function add_after($name, array $existing, array $callback)
{
if (empty(Event::$_events[$name]) or FALSE === ($key = array_search($existing, Event::$_events[$name], TRUE))) {
// No need to insert, just add
return Event::add($name, $callback);
}
// Insert the event immediately after the existing event
return Event::_insert_event($name, $key++, $callback);
}
