If you're one of the developers out there on the edge, and are looking for a good way to integrate your Flash and dabtase backend, then PHP just might be your answer. According to this article, you can weave them together pretty tight.

In Learn how to access and run php procedural functions from within Flash MX, they show you, step-by-step, how to take a database backend (in this case, MySQL), and create a WDDX interface for it. They give you both sides of the information - the "client" in Flash Actionscript, and the "server" with PHP showing off the content with WDDX. Thankfully, Flash completely understands the WDDX format, and can parse out the results of the XML-based information.

I still think that this is some of what's missing on the internet these days - Flash and PHP integration. If more people could make applications (or even just frameworks for apps) in Flash bundled with a PHP backend, I think we'd see a lot more interactive applications out there.

Thanks to Ewald for the link...