Swift::registerAutoload PHP Méthode

    public static function registerAutoload($callable = null)
    {
        if (null !== $callable) {
            self::$inits[] = $callable;
        }
        spl_autoload_register(array('Swift', 'autoload'));
    }

 public function register(Application $app)
 {
     $app['swiftmailer.options'] = array_replace(array('host' => 'localhost', 'port' => 25, 'username' => '', 'password' => '', 'encryption' => null, 'auth_mode' => null), isset($app['swiftmailer.options']) ? $app['swiftmailer.options'] : array());
     $app['mailer'] = $app->share(function () use($app) {
         $r = new \ReflectionClass('Swift_Mailer');
         require_once dirname($r->getFilename()) . '/../../swift_init.php';
         return new \Swift_Mailer($app['swiftmailer.transport']);
     });
     $app['swiftmailer.transport'] = $app->share(function () use($app) {
         $transport = new \Swift_Transport_EsmtpTransport($app['swiftmailer.transport.buffer'], array($app['swiftmailer.transport.authhandler']), $app['swiftmailer.transport.eventdispatcher']);
         $transport->setHost($app['swiftmailer.options']['host']);
         $transport->setPort($app['swiftmailer.options']['port']);
         $transport->setEncryption($app['swiftmailer.options']['encryption']);
         $transport->setUsername($app['swiftmailer.options']['username']);
         $transport->setPassword($app['swiftmailer.options']['password']);
         $transport->setAuthMode($app['swiftmailer.options']['auth_mode']);
         return $transport;
     });
     $app['swiftmailer.transport.buffer'] = $app->share(function () {
         return new \Swift_Transport_StreamBuffer(new \Swift_StreamFilters_StringReplacementFilterFactory());
     });
     $app['swiftmailer.transport.authhandler'] = $app->share(function () {
         return new \Swift_Transport_Esmtp_AuthHandler(array(new \Swift_Transport_Esmtp_Auth_CramMd5Authenticator(), new \Swift_Transport_Esmtp_Auth_LoginAuthenticator(), new \Swift_Transport_Esmtp_Auth_PlainAuthenticator()));
     });
     $app['swiftmailer.transport.eventdispatcher'] = $app->share(function () {
         return new \Swift_Events_SimpleEventDispatcher();
     });
     if (isset($app['swiftmailer.class_path'])) {
         require_once $app['swiftmailer.class_path'] . '/Swift.php';
         \Swift::registerAutoload($app['swiftmailer.class_path'] . '/../swift_init.php');
     }
 }