Composer A project using Symfony packages Composer is a tool for dependency management in PHP. It allows you to declare the dependent libraries your project needs and it will install them in your project for you. Official website: getcomposer.org Symfony Packages Used by this Project Console Process Filesystem Finder PHPUnit Bridge Polyfill PHP 7.3 Polyfill PHP 8.0 Polyfill PHP 8.1 PolyfillPhp84