Translation Component ===================== Translation provides tools for loading translation files and generating translated strings from these including support for pluralization. use Symfony\Component\Translation\Translator; use Symfony\Component\Translation\MessageSelector; use Symfony\Component\Translation\Loader\ArrayLoader; $translator = new Translator('fr_FR', new MessageSelector()); $translator->setFallbackLocale('fr'); $translator->addLoader('array', new ArrayLoader()); $translator->addResource('array', array( 'Hello World!' => 'Bonjour', ), 'fr'); echo $translator->trans('Hello World!') . "\n"; Resources --------- Silex integration: https://github.com/fabpot/Silex/blob/master/src/Silex/Provider/TranslationServiceProvider.php Documentation: http://symfony.com/doc/2.0/book/translation.html You can run the unit tests with the following command: phpunit -c src/Symfony/Component/Translation/ If you also want to run the unit tests that depend on other Symfony Components, declare the following environment variables before running PHPUnit: export SYMFONY_CONFIG=../path/to/Config export SYMFONY_YAML=../path/to/Yaml