As mentioned on the Zend Developer Zone, there's a new article over on the IBM developerWorks website talking about getting Ajax and PHP to play nicely together with DB2 through Xajax.

Various PHP class libraries are available for using Ajax with PHP, among them Xajax, an open source, object-oriented, PHP class library. In this article, learn how to implement PHP, Ajax, and Xajax to develop a dynamic Web application solution accessing IBM DB2 9 for Linux, UNIX, and Windows.

They look at what Xajax is before getting started (to level the playing field) and then start with the installations and usage:

• Install DB2 for Linux, UNIX, and Windows
• Install PHP and Xajax
• Create a DB2 database table
• Sending a request
• Processing a request

By the end, you'll have a simple (form) application that can interact easily with a PHP backend, talking to a DB9 database, that can save catalog information.