Common interface for logging libraries
Sends your logs to files, sockets, inboxes, databases and various web services
Symfony EventDispatcher Component
Symfony Console Component
Symfony polyfill for the Mbstring extension
The PHP Unit Testing framework.
A small, lightweight utility to instantiate objects in PHP without invoking their constructors
Symfony Yaml Component
Library that provides collection, processing, and rendering functionality for PHP code coverage information.
Common String Manipulations with regard to casing and singular/plural rules.