Symfony Profiler

<?php
namespace App\EventSubscriber;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;
class LocaleSubscriber implements EventSubscriberInterface
{
private $defaultLocale;
public function __construct($defaultLocale = 'nl')
{
$this->defaultLocale = $defaultLocale;
}
public function onKernelRequest(RequestEvent $event)
{
$request = $event->getRequest();
if (!$request->hasPreviousSession()) {
return;
}
// try to see if the locale has been set as a _locale routing parameter
if ($locale = $request->attributes->get('_locale')) {
$request->getSession()->set('_locale', $locale);
} elseif(array_key_exists('_locale', $_GET)) {
$request->setLocale($_GET['_locale']);
$request->getSession()->set('_locale', $_GET['_locale']);
} else {
// if no explicit locale has been set on this request
if(!$request->getSession()->get('_locale')) {
if(array_key_exists('HTTP_ACCEPT_LANGUAGE',$_SERVER)){
$clientLocale = strtolower(str_split($_SERVER['HTTP_ACCEPT_LANGUAGE'], 2)[0]);
} else {
$clientLocale = $this->defaultLocale;
}
$request->setLocale($clientLocale);
} else {
// or use one from the session
$request->setLocale($request->getSession()->get('_locale', $this->defaultLocale));
}
}
}
public static function getSubscribedEvents()
{
return [
// must be registered before (i.e. with a higher priority than) the default Locale listener
KernelEvents::REQUEST => [['onKernelRequest', 20]],
];
}
}
?>

src/EventSubscriber/LocaleSubscriber.php line 41