PHP/Apache Sandboxing

Hi All,

At work, we are testing a PHP/Apache Sandbox.
Does anyone have experience with Applicure's TotalShield? 
(www.applicure.com)
I was wondering if anyone knows what libs I should allow access to in 
order for php to work.
The tool filters the calls to the filesystem coming from Apache/PHP, it 
seems to be working well,
but i thought the list would be the right place to ask.

Help would be most welcome.
Thanks,

Jim.