This is a community driven fork of symfony 1, as official support ended in November 2012. (Also note: new tickets can no longer be opened on the original Symfony 1.4 site.)
This fork is solely intended to keep legacy Symfony 1.4 applications running securely on currently-maintained versions of PHP, without changes to your application code unless security absolutely requires them. PHP 5.3.4 is a minimum requirement. We actively test with PHP 5.4.x and are incorporating community fixes for 5.5.x and above.
Please do not use this fork for new projects. You should move on. If you like PHP, check out Symfony2.
We are using the drak fork of Doctrine 1.2, and we have cherry-picked backwards-compatible PHP compatibility fixes from the L'Express fork of Symfony 1.4. That is a fine fork but its goals include new backwards-incompatible features, thus this separate fork for maintenance work only.
PHP 5.3.4 and up. See prerequisites on http://symfony.com/legacy/doc/getting-started/1_4/en/02-Prerequisites
That's the tricky bit. We don't want to break your legacy svn workflow, because it's not broken. We would like to use github's support for svn, but it has two bugs that get in the way of using svn externals to solve the problem of installing symfony and doctrine.
Our preferred workaround can be found in these scripts:
Update Your Project, Symfony and Doctrine
The first script is a one-time installation tool. The second script does an svn up of your project, then git pull for both Symfony and Doctrine.
Make sure you remove your existing lib/vendor/symfony folder, remove any svn:externals setting that is refreshing it, and svn:ignore it before switching over to this approach.
"What about composer?" We are open to a pull request for composer support, as long as it does not break things for those of us who are not using it.
Symfony is a complete framework designed to optimize the development of web applications by way of several key features. For starters, it separates a web application's business rules, server logic, and presentation views. It contains numerous tools and classes aimed at shortening the development time of a complex web application. Additionally, it automates common tasks so that the developer can focus entirely on the specifics of an application. The end result of these advantages means there is no need to reinvent the wheel every time a new web application is built!
Symfony was written entirely in PHP 5. It has been thoroughly tested in various real-world projects, and is actually in use for high-demand e-business websites. It is compatible with most of the available databases engines, including MySQL, PostgreSQL, Oracle, and Microsoft SQL Server. It runs on *nix and Windows platforms.
Read the official symfony1 documentation
You can send pull requests or create an issue. At this late date, only security bugs, warnings and errors from newer versions of PHP, and new bugs introduced by commits in this fork are of interest.