Linked to from this new post on the Zend Developer Zone is a handy regular expressions tutorial that any budding PHP developer should definitely check out.

Man I hate REGEX. Not for what it does, it's a powerful weapon. It's part sniper rifle, part bazooka and extremely useful in some situations. As powerful as it is though, it is a pain to write a good REGEX query; especially when you only do it occasionally. Thankfully, Bernard Peh and the gang over at WebProNews have released a primer for REGEX in PHP that makes it a little less painful to work with.

Appropriately titled Introduction To Regular Expressions In PHP, the article starts with a basic REGEX primer. It's sparse on details but it discusses the different types of characters in a REGEX query. Properly formatted, this would be a great little cheat sheet to have handy.

Cal (on the Zend site) mentions that it's a good starting place, but they don't get too deep into the meat of the matter, showing more than just the basics of "this is what this character does". Oh well, I suppose maybe that's being saved for part two...