什么是AMF模式？
我今天看天ThinkPHP里面有个AMF模式，请问什么是AMF模式呢？
------解决方案--------------------
什么是AMF？
AMF(Action Message Format)是一种 binary format的资料型态，透过 AMF over HTTP的方式将flash端资料编码后传回server，server端的remoting adaptor接收到资料后则会译码回正确的native对象，交给正确的程序处理。
AMF除了用于Flash remoting外，也广泛的用于 Local Connection 与 Flash communication server，它最大的特色在于可直接将flash native object，例如Object, Array, Date, XML，传回server端，并且在server端自动进行转译成适当的对象，例如flash 的Array传回PHP时就会自动转换为 Associative Array；这个特色对开发者最大的好处在于不需要再人工处理serialization 与 deserialization的繁复工作，不但精确度更高，同时开发也更省时间。
由于AMF是binary format并且编码时经过高度压缩，因此非常适合用来传递大量的资料，根据flashorb网站的测试(主要针对web service与flash remoting)，当资料量越大时，flash remoting的传输效能就越高，远远超过web service的表现，因此同样的道理也可得知xml, loadVars, loadVariables 等使用plaine text format的传输方式自然也无可比拟
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