Using the gelf logging handler in Symfony 2.0.x

The gelf handler is only available if you use Symfony >= 2.1.

If, for whatever reason, you still use Symfony 2.0.x you can use these snippets to integrate the gelf handler in your current symfony installation

https://gist.github.com/2479478

Nevertheless I strongly recommend upgrading to the newest symfony version since support for 2.0 will be dropped soon.