cast debug to boolean when creating kernel

Author: bendavies

symfony/console/3.3/bin/console

@@ -35,6 +35,6 @@ if ($_SERVER['APP_DEBUG']) {
     }
 }
 
-$kernel = new Kernel($_SERVER['APP_ENV'], $_SERVER['APP_DEBUG']);
+$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
 $application = new Application($kernel);
 $application->run($input);

symfony/framework-bundle/3.3/public/index.php

@@ -20,7 +20,7 @@
     Request::setTrustedHosts([$trustedHosts]);
 }
 
-$kernel = new Kernel($_SERVER['APP_ENV'], $_SERVER['APP_DEBUG']);
+$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();

symfony/framework-bundle/4.2/public/index.php

@@ -20,7 +20,7 @@
     Request::setTrustedHosts([$trustedHosts]);
 }
 
-$kernel = new Kernel($_SERVER['APP_ENV'], $_SERVER['APP_DEBUG']);
+$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();