CakePHP is a web application framework written in PHP, modeled after the concepts of Ruby on Rails. There are two series of tutorials on developerWorks detailing its use; "Cook up Web sites fast with CakePHP" and "Create an interactive production wiki using PHP."
I contributed a driver to the CakePHP project which uses the ibm_db2 extension. Theoretically this driver can also be used with IBM Cloudscape, Apache Derby, and Sun Java DB because it employs the same PECL extension for connecting to all of these RDBMSes.
The code is currently in the development branch of CakePHP 1.2. I put out a call for alpha testers on the Cake list a few weeks back with instructions how to report bugs.
I've also posted some steps for getting up and running with a sample application.
Please give it a whirl so that we can get it as solid as possible for a stable release of CakePHP 1.2 later this year.