<?php class EventBus { public function addEventListener(Listener $listener) { $this->listeners[] = $listener; } public function dispatch(Event ...$events) { foreach($events as $event){ foreach($this->listeners as $listener){ $listener->when($event); } } } } abstract class Listener { public function __construct(EventBus $bus) { $bus->addEventListener($this); } public function when(Event $event) { $method = explode('\\', get_class($event)); $method = 'on' . end($method); if (method_exists($this, $method)) { $this->$method($event); } } } class SendEmailListener extends Listener { public function onMemberRegistered(Event $event) { // send email } } $eventBus = new EventBus; new SendEmailListener($eventBus);
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