mod.php

<?php

class IndexController
{
  public function indexAction()
	{
		echo '<h2>Running ' . __METHOD__ . '</h2>';
	}
}

$di = new Phalcon\DI\FactoryDefault();

$di['view'] = function() {
	$view = new Phalcon\Mvc\View();
	return $view;
};

$di['router'] = function() {
	$router = new Phalcon\Mvc\Router();
	$router->setDefaultModule('frontend');
	return $router;
};

$application = new Phalcon\Mvc\Application($di);

// Register the installed modules
$application->registerModules(
    array(
        'frontend' => function($di) {
        	echo '<h1>Initializing frontend</h1>';
        },
        'backend' => function($di) {
        	echo '<h1>Initializing backend</h1>';
        }
    )
);

echo $application->handle()->getContent();