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HomeBackend DevelopmentPHP TutorialAMFPHP php远程调用(RPC, Remote Procedure Call)工具 快速入门_PHP

它可以使PHP与下述技术无缝通信:
(1) Flash 和 Flex Remoting
(2) JavaScript JSON 和 Ajax JSON
(3) XML 和XML-RPC
什么是RPC
远端程序调用(RPC, Remote Procedure Call) 是一种客户端与服务器端交换数据方式。我们可以调用本地对象带对各种参数方法设置回调并接受调用结果。我们不用关心发送和接收数据的实现细节。实现细节通常是抽象的,就像我们在调用本地方法一样。
AMFPHP的工作原理
 客户端(Flash / Flex)与服务器端(PHP) 使用相同的方式描述方法调用和复杂数据。客户端序列化请求并将它发送到网关AMFPHP。AMFPHP再执行:
  (1) 反序列化请求
  (2) 找到相应的远程服务类
  (3) 实例化类
  (4) 执行安全检查
  (5)(使用指定参数)调用服务器端方法
  (6) 序列化返回的数据
  AMFPHP可以正确地序列化、反序列化复杂类型数据。除了对象和数组,它还支持 resources 数据连接资源,这就意味着我们可以通过调用远程方法简单返回mysql_query,amfphp 会处理这一切。如果平台支持 (目前来说,Flash Remoting 和Flex Remoting),AMFPHP还可以处理循环引用和自定义数据它也支持简单的远程调试。还有AMFPHP附带一个浏览器,它可以在创建客户端代码前测试远程服务。AMFPHP 1.0.1还添加了模板,可以自动生成客户端代码。AMFPHP 1.9 beta更是新增了对AMF3的支持。
简单示例
下面我们通过一个简单的登录示例来对AMFPHP有一个初步的认识,将分别从客户端和服务器端两个部分进行介绍。
一,Flex客户端:
代码
复制代码 代码如下:
import mx.controls.Alert;
import mx.rpc.remoting.mxml.RemoteObject;
import mx.rpc.events.*;
public var login_remoteObj:RemoteObject = null;
public function initLoginRemoteObject():void
{//初始化RemoteObject
this.login_remoteObj = new RemoteObject();
this.login_remoteObj.source = "Login";
this.login_remoteObj.destination = "amfphp";
this.login_remoteObj.showBusyCursor = true;
this.login_remoteObj.endpoint = "http://localhost/MyTest/amfphp/gateway.php";
this.login_remoteObj.doLogin.addEventListener("result", loginHandler);
this.login_remoteObj.doLogin.addEventListener("fault", faultHandler);
}
public function doLogin():void
{//登陆操作,向服务器提交数据
var name:String = this.txtName.text;
var pwd:String = this.txtPassword.text;
var data:Array = new Array();
data.push(name);
data.push(pwd);
this.login_remoteObj.getOperation("doLogin").send(data);
}
public function loginHandler(event: ResultEvent):void
{//处理服务器返回的结果
var result:Array = event.result as Array;
var flag:String = result[0];
if (flag == "0") {
Alert.show("登陆失败: " + result[1]);
} else if (flag == "1") {
Alert.show("登陆成功: " + result[1]);
} else if (flag == "-1") {
Alert.show("异常: " + result[1]);
}
}
public function faultHandler(event: FaultEvent):void
{//出错处理
Alert.show("sorry,出错了!!!");
}
}

二,PHP服务器端
1,将amfphp文件夹置于MyTest项目的根目录下,打开浏览器输入下述地址验证amfphp是否安装成功
复制代码 代码如下:
http://localhost/MyTest/amfphp/gateway.php

amfphp就是通过这个gateway来定位我们的服务类,并将请求转发给这些服务类进行处理的。
2,Login.php文件,包含了处理登陆请求的Login类,此文件置于BusinessLogic目录下
代码
复制代码 代码如下:
class Login
{
public function doLogin($data)
{
$result = array();
try {
$name = array_shift($data);
$pwd = array_shift($data);
if ($name == "phinecos" && $pwd == "123") {
$result[] = "1";
$result[] = "you are valid user!";
} else {
$result[] = "0";
$result[] = "login failed";
}
} catch (Exception $ex) {
$result[] = "-1";
$result[] = $ex->getMessage();
}
return $result;
}
}
?>

3,将globals.php中的服务路径项修改如下,为amfphp指明服务类所在的目录
复制代码 代码如下:
$servicesPath = "../BusinessLogic/";

作者:洞庭散人
AMFPHP 下载地址
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