With more details on their PHP 5 hosting and a Zend article to talk all about it, DotGeek.org has this case study posted on Zend.com.

With the PHP 5 release cycle finally under way, interest from both developers and hosting managers in migration is steadily growing, yet there are few possibilities for developers to test PHP 5 in a real server environment (i.e. with many users, high traffic, and in combination with the more popular database engines).

Since March 2004, dotgeek.org has offered free PHP 5 hosting as an advertisement-free, try-before-you-migrate experience.

Within this article we will share the experience of running dotgeek.org. We will tell you what works out of the box, what doesn't, and where the pitfalls lie.

They go on to talk about their build and installation as well as what works and what doesn't when it comes to their hosted developers.