Simple and elegant way to attach hooks in your application

example.php

<?php

// Example 1:
Event::bind('blog.post.create', array(new BlogTriggers, 'onPostCreate'));

// Trigger for Example 1
Event::trigger('blog.post.create', [
	'name'	=>	 'My 123rd Post on Blog',
	'id'	=>	 '123',
]);

class BlogTriggers {

	public function onPostCreate($args=array()) {
		echo "Post id <strong>{$args['id']}</strong> created with the title <strong>{$args['name']}</strong>";
	    // echo 'I am tiggered on Blog Post Created';
	}

}

class Event
{
    public static $events = array();

    public static function trigger($event, $args = array())
    {
        if(isset(self::$events[$event]))
        {
            foreach(self::$events[$event] as $func)
            {
                call_user_func($func, $args);
            }
        }
    }

    public static function bind($event, $func)
    {
        self::$events[$event][] = $func;
    }
}

// Source: http://stackoverflow.com/questions/4471183/php-event-listener-best-practice-implementation/9255855#9255855