Zend_Amf provides support for Adobe's » Action
Message Format (AMF), to allow communication between Adobe's
» Flash
Player and PHP. Specifically, it provides a gateway server
implementation for handling requests sent from the Flash Player to the
server and mapping these requests to object and class methods and
arbitrary callbacks.
The » AMF3
specification is freely available, and serves as a reference
for what types of messages may be sent between the Flash Player and
server.