public function onResponse(ResponseEvent $event)
{
$response = $event->getResponse();
$headers = $response->headers;
if (!$headers->has('Content-Length') && !$headers->has('Transfer-Encoding')) {
$headers->set('Content-Length', strlen($response->getContent()));
}
}
public function onResponse(ResponseEvent $event)
{
$response = $event->getResponse();
if ($response->isRedirection() || $response->headers->has('Content-Type') && false === strpos($response->headers->get('Content-Type'), 'html') || 'html' !== $event->getRequest()->getRequestFormat()) {
return;
}
$code = '<!-- GA CODE -->';
$response->setContent($response->getContent() . $code);
}