Symfony2 Shell.php error on production server

Question

I get the following error in app_dev.php on my production server:

ErrorException: Notice: Undefined variable: output in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php line 59

in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php line 59

at ErrorHandler->handle('8', 'Undefined variable: output', '/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php', '59', array('command' => 'find')) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Shell/Shell.php line 59

at Shell->testCommand('find') in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Adapter/AbstractFindAdapter.php line 123

at AbstractFindAdapter->isSupported() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Adapter/GnuFindAdapter.php line 30

at GnuFindAdapter->isSupported() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Finder.php line 700

at Finder->searchInDirectory('/www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Validator/Resources/translations') in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/Finder/Finder.php line 628

at Finder->getIterator() in /www/acme/www/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php line 555

at FrameworkExtension->registerTranslatorConfiguration(array('fallback' => 'pl', 'enabled' => true), object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php line 106

at FrameworkExtension->load(array(array('translator' => array('fallback' => 'pl'), 'secret' => 'eea6ad638afadb62cd7bc360e98f7d3b', 'router' => array('resource' => '/www/acme/www/app/config/routing.yml', 'strict_requirements' => true), 'form' => true, 'csrf_protection' => true, 'validation' => array('enable_annotations' => true), 'templating' => array('engines' => array('twig')), 'trust_proxy_headers' => false, 'default_locale' => 'pl', 'session' => null), array('router' => array('resource' => '/www/acme/www/app/config/routing_dev.yml'), 'profiler' => array('only_exceptions' => false))), object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/MergeExtensionConfigurationPass.php line 42

at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/DependencyInjection/MergeExtensionConfigurationPass.php line 39

at MergeExtensionConfigurationPass->process(object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Compiler/Compiler.php line 119

at Compiler->compile(object(ContainerBuilder)) in /www/acme/www/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php line 494

at ContainerBuilder->compile() in /www/acme/www/app/bootstrap.php.cache line 950

at Kernel->buildContainer() in /www/acme/www/app/bootstrap.php.cache line 859

at Kernel->initializeContainer() in /www/acme/www/app/bootstrap.php.cache line 571

at Kernel->boot() in /www/acme/www/app/bootstrap.php.cache line 614

at Kernel->handle(object(Request)) in /www/acme/www/web/app_dev.php line 29

Everything works fine on my localhost so it can be something wrong with the server configuration.

Are you running symfony 2.0 or 2.1? Which version of the process component? Which php version? Does the app/check.php and web/config.php point out any errors? — Sgoettschkes
– Sgoettschkes, Commented Dec 3, 2012 at 14:26
@Sgoettschkes I have just answered my own question. PHP exec() function is turned off. — Wojciech Jasiński
– Wojciech Jasiński, Commented Dec 3, 2012 at 14:30

Wojciech Jasiński · Accepted Answer · 2012-12-03 14:29:51Z

1

Hosting provider has turned PHP exec function off because of the security reasons. That's why above error occurred. Does anyone know if its possible to bypass exec function in Symfony2 - I mean if it's possible to run symfony2 on the server with exec function turned off?

answered Dec 3, 2012 at 14:29

Wojciech Jasiński

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Rvanlaak · Accepted Answer · 2012-12-14 14:32:27Z

1

I've got the same problem with my hosting, with php safe_mode off. Actually there is a todo, but I dont know when they will fix it.

// todo: find a better way (command could not be available)
exec('command -v '.$command, $output, $code);

as seen in Symfony\Component\Finder\Shell\Shell;

answered Dec 14, 2012 at 14:32

Rvanlaak

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