Troy McCormick has pointed out a new game he's developing combining the CodeIgniter PHP framework, MySQL and the ExtJS library - ExtJS Poker.

ExtJS Poker is a Texas Hold'em Poker game programmed using PHP (Codeigniter), MySQL, and ExtJS. check out the early screenshots on the SourceForge project page.

ExtJS is a cross-browser Javascript library that helps you build rich internet applications with high-performance widgets, an extensible Component model and licenses to fit your use. CodeIgniter is a PHP framework with a very small footprint created for programmers who need a simple and elegant toolkit to create full-featured web applications.

As both the Zend Developer Zone and Ajaxian point out, there's been two new projects based on the Ext JS user interface widget system adapted for PHP - PHP-Ext and ExtPHP.

PHP-Ext is an open source widget library written for PHP 4 and 5 to empower the UI Layer. It is based on Ext JS javascript widgets which provide a standard and powerful API to build Rich Internet Applications. It basically works as a convenient wrapper for the Ext JS Javascript Objects.

And from the ExtPHP site:

I needed to be the one person who would have to wrestle JavaScript when problems happened. I therefore needed a way to insulate them from the gory details, which is why I created ExtPHP. As you may have guessed from subtle hints, such as this entry's 12-feet tall header, ExtPHP creates a PHP wrapper for ExtJS.

The Ajaxian post also includes code examples for each of them, one showing form construction and the other a tabbed interface.