The announcement has finally come - the PHP project has officially moved to git!
The migration of the PHP source code from Subversion to Git is complete. You can clone or fork the source from our GitHub mirror, and we also now support pull requests made via GitHub. The source is also available via git.php.net, and full instructions on cloning the php-src tree can be found at php.net/git. One immediate benefit is that future PHP release tags will be signed by the PHP development team. We will be releasing GPG keys for verification purposes in the next few days. More information on the migration and the new workflow can be found at the Moving to Git FAQ on the PHP Wiki.
This move does not include the manuals yet, but that's coming soon. Be sure to follow these steps if you'd like to contribute back via the git repository. This is a great move for the project and makes it even easier for developers to contribute their fixes and ideas back to the development group!
Joshua Thijssen has also posted a guide to getting started on his blog.