# sebastian/environmentThis component provides functionality that helps writing PHP code that has runtime-specific (PHP / HHVM) execution paths.[](https://packagist.org/packages/sebastian/environment)[](https://php.net/)[](https://travis-ci.org/sebastianbergmann/environment)## InstallationYou can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/): composer require sebastian/environmentIf you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency: composer require --dev sebastian/environment