OS X server 4.0.3 and php

Hey, i have a problem with my websites. I cleanly installed OS X 10.10.2 and clean server 4.0.3 and php is just not working.

When i turn php off, the page showed the text that is in the file, so thats correct... when i turn php on in the server app the page just is blank...

When testing i tried a few things but nothing changed anything. I am using the included info.php file in the website root.

Can anyone help me fix this?

thanks, sander