On the FreeWebmasterHelp.com site, there's a tutorial that's getting some attention today - their PHP Introductory Tutorial.

Up until recently, scripting on the internet was something which very few people even attempted, let alone mastered. Recently though, more and more people have been building their own websites and scripting languages have become more important. Because of this, scripting languages are becomming easier to learn and PHP is one of the easiest and most powerful yet.

Some of the topics that they cover the basics (what PHP is), using variables, loops, if statements, email functionality, and forms with PHP. It's a pretty good overview, but only people really just getting into PHP (and programming) should check it out...