Lol... thanks!
I think PHP tuts would look a bit funny near 'how to make trees' and so on, but I have another site which has an open-source scripts section ->
http://cariad.co.za/bluebox/?sec=scriptboxIt's still kind-of under development, so there's not much there yet.
I prob. won't release TWHL source code soon, partly because lots of it is a real mess. If I rewrite TWHL at some stage, I might release the old code, but you'll probably have learnt PHP by then
Of course, you're welcome to e-mail me with PHP questions, because I like answering them.