Icu Component ============= Contains data of the ICU library. The bundled resource files have the [resource bundle format version 2.*] [1], which can be read using ICU 4.4 and later. Compatibility can be tested with the test-compat.php script bundled in the Intl component: php path/to/Symfony/Component/Intl/Resources/bin/test-compat.php You should not directly use this component. Use it through the API of the [Intl component] [2] instead. Resources --------- You can run the unit tests with the following command: $ cd path/to/Symfony/Component/Icu/ $ composer.phar install --dev $ phpunit [1]: http://site.icu-project.org/design/data/res2 [2]: https://github.com/symfony/Intl