1、Because this example USES AMFPHP, the AMF directory must be there for the supporting AMFPHP framework.
2、Before writing the services classes, download and install the required AMFPHP files.
3、AMFPHP (Remoting solution for PHP) handles the communications between back - and front-ends.
4、编写这些服务类之前，下载并安装需要的AMFPHP文件。
5、Notice that you need to change the URL for the gateway used by AMFPHP to whatever works for your environment.
6、To call the service, you need to set up the PHP class in the AMFPHP service configuration file in your services-config.xml file.
