Make "APP_DEBUG" mode fallback to "APP_ENV !== prod"

Author: nicolas-grekas

symfony/console/3.3/bin/console

@@ -21,7 +21,7 @@ if (!isset($_SERVER['APP_ENV'])) {
 
 $input = new ArgvInput();
 $env = $input->getParameterOption(['--env', '-e'], $_SERVER['APP_ENV'] ?? 'dev');
-$debug = ($_SERVER['APP_DEBUG'] ?? true) !== '0' && !$input->hasParameterOption(['--no-debug', '']);
+$debug = ($_SERVER['APP_DEBUG'] ?? ('prod' !== $env)) && !$input->hasParameterOption(['--no-debug', '']);
 
 if ($debug) {
     umask(0000);

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

@@ -12,15 +12,15 @@
     (new Dotenv())->load(__DIR__.'/../.env');
 }
 
-if ($_SERVER['APP_DEBUG'] ?? false) {
+if ($_SERVER['APP_DEBUG'] ?? ('prod' !== ($_SERVER['APP_ENV'] ?? 'dev'))) {
     umask(0000);
 
     Debug::enable();
 }
 
 // Request::setTrustedProxies(['0.0.0.0/0'], Request::HEADER_FORWARDED);
 
-$kernel = new Kernel($_SERVER['APP_ENV'] ?? 'dev', $_SERVER['APP_DEBUG'] ?? false);
+$kernel = new Kernel($_SERVER['APP_ENV'] ?? 'dev', $_SERVER['APP_DEBUG'] ?? ('prod' !== ($_SERVER['APP_ENV'] ?? 'dev')));
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();