In all the excitement last week at Adobe MAX, we failed to highlight a major release for PHP developers from Zend. Zend Framework 1.7 was released last week - this is the first version of the framework that includes AMF support, making it really easy for PHP developers to build great UIs using Flex and Flash.
The latest version also includes support for a new version of the Dojo Toolkit (1.2.1), among other improvements.
The Zend AMF plugin has been packaged as a separate download - allowing it to be integrated into other PHP web frameworks easily.
For more information on starting with Flex and PHP, check out the PHP page on the Flex developer center.
Great news, I'm doing Flex with CF but this may move me to also use php