Enable Symfony Profiler for Admins In Production

index.php

<?php

use App\Kernel;
use Symfony\Component\ErrorHandler\Debug;
use Symfony\Component\HttpFoundation\Request;

require dirname(__DIR__).'/config/bootstrap.php';

if(isset($_COOKIE['debug']) && $_COOKIE['debug']){
    $_SERVER['APP_DEBUG'] = (bool) $_COOKIE['debug'];
}

if ($_SERVER['APP_DEBUG']) {
    umask(0000);

    Debug::enable();
}

if ($trustedProxies = $_SERVER['TRUSTED_PROXIES'] ?? false) {
    Request::setTrustedProxies(explode(',', $trustedProxies), Request::HEADER_X_FORWARDED_ALL ^ Request::HEADER_X_FORWARDED_HOST);
}

if ($trustedHosts = $_SERVER['TRUSTED_HOSTS'] ?? false) {
    Request::setTrustedHosts([$trustedHosts]);
}

$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

ProfilerSubscriber.php

<?php


namespace App\EventSubscriber;


use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Profiler\Profiler;
use Symfony\Component\Security\Core\Security;
use Symfony\Component\ErrorHandler\Debug;

class ProfilerSubscriber implements EventSubscriberInterface
{

    /**
     * @var Profiler
     */
    private $profiler;
    /** @var Security */
    private $security;
    /** @var string */
    private $appEnv;

    /**
     * ProfilerSubscriber constructor.
     * @param Profiler $profiler
     * @param Security $security
     * @param string $appEnv
     */
    public function __construct(Profiler $profiler, Security $security, string $appEnv)
    {
        $this->profiler = $profiler;
        $this->security = $security;
        $this->appEnv = $appEnv;
    }


    public function onKernelRequest(RequestEvent $event)
    {
        if (!$event->isMasterRequest()) {
            return;
        }

        if($this->appEnv == 'prod'){
            setcookie("debug", 0, time()+3600);
            $this->profiler->disable();
        }

        if($user = $this->security->getUser()){
            if(in_array('ROLE_ADMIN',$user->getRoles())){
                $this->profiler->enable();
                setcookie("debug", 1, time()+3600);
            }
        }

    }


    public static function getSubscribedEvents()
    {
        return array(
            KernelEvents::REQUEST => 'onKernelRequest'
        );
    }

}