Simple EventGenerator trait that you might use with domain events

EventGenerator.php

<?php

trait EventGenerator
{
    protected $pendingEvents = array();

    protected function raise($event)
    {
        $this->pendingEvents[] = $event;
    }

    public function releaseEvents()
    {
        $events = $this->pendingEvents;
        $this->pendingEvents = array();
        return $events;
    }
}