Taking Ajax further with PHP

Taking Ajax further with PHP « Blog « Peter Upfold: "Today, we're going to take Ajax a little further, by building a little application where our user selects a product from a pop-up list, and then we do a little Ajax dance to get some product details (and an image) and display them in a box below. We'll be making our own little XML schema which we'll use to pass information between the JavaScript in the user's browser and our PHP script on the server."