【微信公众平台开发】接收信息，并分析信息类型进行响应（三）

<?php
 public function ResponseMsg()
    {
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];   //获取从微信服务器发送过来的信息

        if (!empty($postStr)){
        	//simplexml_load_string() 函数把 XML 字符串载入对象中。然后从对象中得到相应数据
            $postObj = simplexml_load_string($postStr, ‘SimpleXMLElement‘, LIBXML_NOCDATA);
            
            $fromUsername = $postObj->FromUserName;
            $toUsername = $postObj->ToUserName;
            $keyword = trim($postObj->Content);
            $msgType = $postObj->MsgType;
            $time = time();
            $textTpl = "<xml>
                        <ToUserName><![CDATA[%s]]></ToUserName>
                        <FromUserName><![CDATA[%s]]></FromUserName>
                        <CreateTime>%s</CreateTime>
                        <MsgType><![CDATA[%s]]></MsgType>
                        <Content><![CDATA[%s]]></Content>
                        <FuncFlag>0</FuncFlag>
                        </xml>";
            $replyMsg = "";
            if($msgType == "text")
            {
            	$replyMsg = "您发的是文本信息";
            }
            else if($msgType == "image")
            {
            	$replyMsg = "您发的是图片信息";
            }
            else if($msgType == "location")
            {
            	$replyMsg = "您发的是地理位置信息";
            }
            else if($msgType == "event")
            {
            	$eventType = $postObj->Event;
            	if($eventType == "subscribe")
            	{
            		$replyMsg = "欢迎你订阅";
            	}
            	else if($eventType == "CLICK")
            	{
            		$replyMsg = "自定义菜单事件";
            	}
            }
            
         
            $msgType = "text";
         
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType,$replyMsg);  //根据文档要求，组成xml格式
            echo $resultStr;  //输出，微信服务器接收响应
            
        }else{
            echo "";
            exit;
        }
    }
ResponseMsg();
?>