php event listener

1/*
2 Example 1: 
3 event::bind('blog.post.create', function($args = array())
4 {
5    mail('myself@me.com', 'Blog Post Published', $args['name'] . ' has been published');
6});
7
8 Example 2: 
9 event::trigger('blog.post.create', $postInfo);
10*/
11
12class event
13{
14    public static $events = array();
15
16    public static function trigger($event, $args = array())
17    {
18        if(isset(self::$events[$event]))
19        {
20            foreach(self::$events[$event] as $func)
21            {
22                call_user_func($func, $args);
23            }
24        }
25
26    }
27
28    public static function bind($event, Closure $func)
29    {
30        self::$events[$event][] = $func;
31    }
32}
33