symfony 1.x legacy website
The symfony 1.x branch of the framework started in 2005 and the latest stable version and long term support release is symfony 1.4. As of November 2012, symfony 1.x is not maintained anymore and you are encouraged to have a look at newer Symfony versions for any new projects.
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Practical symfony
Learn symfony: 24 tutorials of 1 hour each, that's all it takes to build up a complete and effective application from scratch. Definitely the best way to become a good symfony developer!
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A gentle Introduction to symfony
The symfony Reference Book
The reference guide: The Symfony Reference Guide is a book where you can easily find answers to your questions at your fingertips. This is a book you will keep with you whenever you develop with symfony.
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More with symfony
Do more with symfony: This book is the symfony 2009 advent calendar, a set of 24 tutorials about advanced symfony topics, published day-by-day between December 1st and Christmas 2009. All tutorials are available in five languages: English, French, Spanish, Italian, and Japanese.
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