Symfony is an open-source PHP web development framework, which is based on the best practices of web development around the Internet. Its goal is to speed up the creation, maintenance and deployoment of live web applications. Symfony is considered one of the best PHP frameworks out there alongside veterans like CakePHP or Zend.

Features of Symfony:
- AJAX support
- Enterprise ready
- Distributions
- Web Debug Toolbar
- Dependency Injection
- Bundles
- Fast
- Simple templating and helpers
- Cache management
- Smart URLs
- Scaffolding
- Multilingualism and I18N support
- Object model and MVC separation

Requirements:
- Symfony2 is only supported on PHP 5.3.2 or Higher

What's New in This Version:
- Console: Progress bars for long running tasks;
- Console: Hiding passwords given from the CLI;
- Console: Asking the user to choose from a list of choices;
- Finder: Filtering by path;
- Finder: Glob Support for the in() method;
- Finder: Speedup on some Platforms;
- HttpKernel: A new sub-framework to manage resource fragments;
- HttpKernel: Nice fatal errors display;
- HttpKernel: The logging of deprecated calls;
- Process: Getting incremental Output from a Process;
- Process: Restarting a Process;
- Process: Getting the Status of a running Process;
- Routing: URL host support in the Routing;
- Routing: Schema-relative and Path-relative URLs;
- Security: interesting security utilities;
- Validators: Payment related validators;
- FrameworkBundle: some nice performance improvement for functional tests;
- FrameworkBundle: caching for static pages.