An Overview – Action Message Format – AMF
AMF is a binary format based loosely on the Simple Object Access Protocol (SOAP). It is used primarily to exchange data between an Adobe Flash application and a database, using a Remote Procedure Call.
Each AMF message contains a body which holds the error or response, which will be expressed as an ActionScript Object.
AMF was introduced with Flash Player 6, and this version is referred to as AMF 0. It was unchanged until the release of Flash Player 9 and ActionScript 3.0, when new data types and language features prompted an update, called AMF 3.
Adobe Systems published the AMF binary data protocol specification on December 13, 2007 and announced that it will support the developer community to make this protocol available for every major server platform.
I got chance to use AMF while working on Flash media server which uses AMF for remote calls. I used flashgateway for connecting Flash media server to tomcat server.
There are many implementations of AMF for remote calls. Read more about AMF at http://osflash.org/documentation/amf and http://en.wikipedia.org/wiki/Action_Message_Format
See a video tutorial for learning AMFPHP :
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