framework/components/eventhandler/interfaces/EventHandler.php
<?php
namespace pwf\components\eventhandler\interfaces;
interface EventHandler
{
/**
* Handler registration
*
* @param string $type
* @param \Callback|array|string $callback
*/
public function on($type, $callback);
/**
* Trigger event
*
* @param string $type
*/
public function trigger($type);
}