<?phpnamespace Harmonizely\EventListener;use Symfony\Component\HttpFoundation\Cookie;use Symfony\Component\HttpKernel\Event\ResponseEvent;class ReferrerListener{ public function onKernelResponse(ResponseEvent $event): void { if ($event->getRequest()->get('ref')) { $event->getResponse()->headers->setCookie( new Cookie( 'ref', $event->getRequest()->get('ref'), time() + 60 * 60 * 24 * 14, '/' ) ); } }}