Swift_Transport_EsmtpTransport::setPort PHP Method

    public function setPort($port)
    {
        $this->params['port'] = (int) $port;
        return $this;
    }

 public function register(Application $app)
 {
     $app['swiftmailer.options'] = array();
     $app['mailer.initialized'] = false;
     $app['mailer'] = $app->share(function ($app) {
         $app['mailer.initialized'] = true;
         return new \Swift_Mailer($app['swiftmailer.spooltransport']);
     });
     $app['swiftmailer.spooltransport'] = $app->share(function ($app) {
         return new \Swift_SpoolTransport($app['swiftmailer.spool']);
     });
     $app['swiftmailer.spool'] = $app->share(function ($app) {
         return new \Swift_MemorySpool();
     });
     $app['swiftmailer.transport'] = $app->share(function ($app) {
         $transport = new \Swift_Transport_EsmtpTransport($app['swiftmailer.transport.buffer'], array($app['swiftmailer.transport.authhandler']), $app['swiftmailer.transport.eventdispatcher']);
         $options = $app['swiftmailer.options'] = array_replace(array('host' => 'localhost', 'port' => 25, 'username' => '', 'password' => '', 'encryption' => null, 'auth_mode' => null), $app['swiftmailer.options']);
         $transport->setHost($options['host']);
         $transport->setPort($options['port']);
         $transport->setEncryption($options['encryption']);
         $transport->setUsername($options['username']);
         $transport->setPassword($options['password']);
         $transport->setAuthMode($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();
     });
 }