This is another in a series of interviews I've been conducting as I travel to different conferences. Most of the people I get the chance to interview are directly involved with PHP in some way. This interview is a bit different. Theo Schlossnagle is the founder of OmniTI, one of the premier PHP consulting companies in the world. OmniTI consults with companies all around the globe on issues ranging from architecture to security.

Cal asks questions about the background of OmniTI, how they find/retain programmers, Messaging Systems, Theo's book, scaling in general, and some of his thoughts on what PHP still has to overcome.

Theo has been working on a book for Sams, "Scalable Internet Architectures", covering the proper ways to ensure that your site and systems will be up to handling whatever load (and kinds of load) is thrown their way. It looks at the traditional ways of handling issues that come up as well as some new tricks for those on a smaller budget.

The book hasn't been released yet (July 2006), but you can preorder it now from your favorite retailer online.