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Symfony 2.1 Documentation
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The official Symfony book that gives you a quick overview of the process of building a real application, from Symfony installation to production deployment.
These practices are optional but show how to develop web applications as envisioned by the original Symfony creators.
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All Symfony configuration options explained with examples.
Stand-alone libraries that you can use in any PHP project.
Third-party packages that add features to your applications.