EventTest.php

<?php

use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\EventDispatcher\Event;

$dispatcher = new EventDispatcher();

$dispatcher->addListener('render', function (Event $event) use ($app) {
    $app->render($event['view'], $event['data']);
});


class HelloWorldController {
  protected $trigger;
  public __construct($dispatcher) {
    $this->trigger = $dispatcher;
  }
  public function hello () {
    $this->trigger->dispatch('render', new GenericEvent(
        'renderView', 
        array(
          'view' => 'home.twig', 
          'data' => array('name' => 'world')
        )
      )
    );
  }
}

$helloWorld = new HelloWorldController($dispatcher);
$helloWorld->hello();