PHP 5.3 has hit Alpha 3 now, so it was about time I got around to poking at the new features myself, instead of just glancing over and deleting huge flame wars on the internals list of the minutae of the much, er, 'discussed' namespaces implementation.
If you're running WIndows, they have builds for you, but the rest of us instead get to build from source. This was slightly tricky:
1. get the php sources here:
http://qa.php.net/