http://asawicki.info/ Graphics programming, game programming, C++, games, Windows, Internet and more...
I knew about this before, but today I've found some time to deeply study Smarty - a free template engine for PHP. Templates in webdev (not to confuse with templates in C++) look like an interesting concept, because they separate PHP code from HTML code. I wish I used them from the start during coding my homepage and the www.gamedev.pl website instead of print()-ing HTML tags directly...
Anyway, I've written a small Smarty Cheatseet. Of course it makes sense only after studying the original library documentation, it cannot replace it.
By the way, I was also looking for some PHP library for creating RSS or ATOM feeds and I've found Feedcreator. Now I'm going to make something useful with it...