Symfony is a web application framework written in PHP which follows the model-view-controller (MVC) paradigm. Symfony aims to speed up the creation and maintenance of web applications and to replace repetitive coding tasks.
It requires a few prerequisites for installation: Unix, Linux, Mac OS or Microsoft Windows with a web server and PHP 5 installed. It is currently compatible with the following Object-relational mappings: Propel and Doctrine.
Symfony has low performance overheads when dealing with an environment that supports a PHP accelerator. It should be noted however, that in typical shared hosting environments where a PHP accelerator is not available, Symfony suffers from a relatively high performance overhead. Symfony is aimed at building robust applications in an enterprise context, and aims to give developers full control over the configuration: from the directory structure to the foreign libraries, almost everything can be customized. To match enterprise development guidelines, Symfony is bundled with additional tools to help developers test, debug and document projects.
