Ever needed to test on a virtual host but with a custom php.ini and a custom user? You didn’t want to setup a complete new server in a virtual machine? You can configure apache to use custom users/ini files by adding the suphp-module:

http://www.suphp.org/

Download + setup took me about 15 minutes.

WARNING: Do not use this on your live server if you want to server a lot of users. suphp is easy to install but ain’t too fast. If you need the functionality *and* speed you gotta invest some extra time and build a solution on mod_fcgid or mod_fastcgi.