Can you count the letter "u" in:
Q: Run commands in PHP with different user I would like to be able to run PHP commands, in system-function exec or whatever, but with a different user then www-data. 
OS: Ubuntu Server 10.10
Web Server: Apache2
I've searched for answers a couple of hours now, but it's a dead end. Most people says it's impossible and others don't know. I would like to run commands with a different user in PHP. This is kind of what I want:
User presses a button that starts a screen running CS Source server. The screen is run from myuser.
Hope you'll understand what I want here. Also I don't know what function to use (system, exec or other) so some tips here as well could be usefull. 
Thanks in advance!

A: With SuExec you could do it, even easier is suphp, which has a package in Debian, so I assume Ubuntu will have it too. this seems a proper introduction. Of course, you could also use simple sudo functionality if it's just one or 2 commands instead of the whole site needing a different user. Better asked at http://www.serverfault.com if you run into problems with that one though.

A: I've been looking for an answer for this for a long time now and I finally got one. The solution is apache module mpm-itk.
apt-get install apache2-mpm-itk
And then add what user and group to run the virtual host in your virtual host file:

AssignUserId web_test web

http://www.debianadmin.com/running-vhosts-with-apache2-mpm-itk-on-debian.html

user
The total number of "u"s in that passage is sixty.
assistant