微信开发自动回复功能，消息类型判断失败，PHP语言

Director404 2016-01-28 10:38:39

编写自动回复，针对用户不同消息类型做出回复，程序怎么调都有问题额。
问题：无论我发送什么消息，文本也好，图片也好，语音也好，都只回复“我只接收图片消息”，也就是说程序似乎不执行
if(strtolower($msgType) =="image"){..............}这一判断.
求各位大神看一下~~~~

<?php

// wechat php 

  



//define your token定义接口

define("TOKEN", "weixin");

$wechatObj = new wechatCallbackapiTest();

$wechatObj ->GetImageMsg();//这个要调用自动回复消息！！

$wechatObj->valid();



class wechatCallbackapiTest

{

//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>接口验证>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

	public function valid()

    {

        $echoStr = $_GET["echostr"];



        //valid signature , option

        if($this->checkSignature()){

            header('content-type:text');//在微信样本代码上添加了如此语句，因而接口接成功

        	echo $echoStr;

        	exit;

        }

    }

        private function checkSignature()

    {

        // you must define TOKEN by yourself

        if (!defined("TOKEN")) {

            throw new Exception('TOKEN is not defined!');

        }

        

        $signature = $_GET["signature"];

        $timestamp = $_GET["timestamp"];

        $nonce = $_GET["nonce"];

                

        $token = TOKEN;

        $tmpArr = array($token, $timestamp, $nonce);

        // use SORT_STRING rule

        sort($tmpArr, SORT_STRING);

        $tmpStr = implode( $tmpArr );

        $tmpStr = sha1( $tmpStr );

        

        if( $tmpStr == $signature ){

            return true;

        }else{

            return false;

        }

    }

//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>



//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>自动回复消息>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

 



 public function GetImageMsg()//自动回复消息

    {

   

        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

        if (!empty($postStr))

        {

     

               libxml_disable_entity_loader(true);

                $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);

                $fromUsername = $postObj->FromUserName;

                $toUsername = $postObj->ToUserName;

                $msgType=$postObj->$MsgType;

                $picUrl=trim($postObj->PicUrl);

                $mediaId=trim($postObj->MediaId);

                $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>";             

            if(strtolower($msgType) =="image")

                {

                    

                    if(!empty($picUrl)){

                           $msgType ="text";

                           $contentStr = "图片链接：".$picUrl."\n";

                           $contentStr =$contentStr."媒体ID:".$mediaId;

                        }else{

                            $contentStr = "请发送图片哦";

                        }           

                }else{

                    $msgType ="text";

                    $contentStr = "我只接收图片消息";    

                }



                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);

                echo $resultStr;

        }

        else 

        {

            echo "";

            exit;

        }

    }

     





}



?>