Possible Fix for PHP errors

I installed  the benchamrking suite on virtualboxes and I think I found the error with PHP frameworks!!

The problem was in benchmark_config files. For example instead of "framework":"php-phpixie" there was "framework":"phpixie" resulting in the setup.py not being executed at all (at least in my case).

In this pull request I fix the benchmark_config header for a few php frameworks that were causing errors. Perhaps other ones should be checked out too.