Not to be letf out of the huge AJAX resurgance that has taken the web programming world by storm lately, PHPBuilder.com has posted this new article with information about "XMLHttpRequest and AJAX for PHP programmers".

Although the concept isn't entirely new, XMLHttpRequest technology is implemented on more sites now than ever. Compatibility is no longer an issue (IE, Mozilla and Opera all support it), and the benefits to using it are amazing. There are too many PHP programmers avoiding any work with javascript beyond simple form validation, but using the XMLHttpRequest object is not as hard as everybody thinks! Read on and join the ranks!

They cover what AJAX is (and isn't), sample control structures and variables to know, creating the XMLHttpRequest Object, as well as a few quick tips on things to watch out for and a few other resources to visit. It's a pretty good walkthrough on the topic, providing sample code, examples, and good explainations along the way - I do wish, however, that they had provided something a bit more technically-challenging than the "Hello World" example...