If you're just starting out with this wonderful language of ours, and don't have much programming experience under your belt, you might get more than a little confused by some of the ideas and terms that are used. Well, this article from InformIT should help with at least one of them.

In this helpful piece, Using Arrays in PHP, they start from the beginning, describing what arrays are and what they can be used for. They then move onto things like: kinds of arrays, reasding and writing to array, and even sorting them every which way. It's a great piece for anyone that wants to see how much power there really is with PHP and it's arrays.

I have to admit, I haven't seen a more complete array introduction anywhere (yet) than this one from InformIT. They really did a good job showing all of the ways that arrays can be used and abused for your scripts, and their examples are (as always) nice and clear.