微信公众平台开发基础指南_编程语言综合

<?php /*     方倍工作室 http://www.cnblogs.com/txw1958/     CopyRight 2013 www.doucube.com  All Rig hts Reserved */

define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); if (isset($_GET['echostr'])) {     $we chatObj->valid(); }else{     $wechatObj->responseMsg(); }  class wechatCallbackapiTest {     public func tion valid()     {         $echoStr = $_GET["echostr"];         if($this->checkSignature()){             echo $ech oStr;             exit;         }     }      private function checkSignature()     {         $signature = $_GET["sign
ature"];         $timestamp = $_GET["timestamp"];         $nonce = $_GET["nonce"];          $token = TO KEN;         $tmpArr = array($token, $timestamp, $nonce);         sort($tmpArr);         $tmpStr = impl ode( $tmpArr );         $tmpStr = sha1( $tmpStr );          if( $tmpStr == $signature ){             retu rn true;         }else{             return false;         }     }      public function responseMsg()     {         $po stStr = $GLOBALS["HTTP_RAW_POST_DATA"];          if (!empty($postStr)){             $postObj = simpl exml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);             $fromUsername = $p ostObj->FromUserName;             $toUsername = $postObj->ToUserName;             $keyword = tri m($postObj->Content);             $time = time();             $textTpl = "<xml>                         <ToUser Name><![CDATA[%s]]></ToUserName>                         <FromUserName><![CDATA[%s]]></From UserName>                         <CreateTime>%s</CreateTime>                         <MsgType><![CDAT A[%s]]></MsgType>                         <Content><![CDATA[%s]]></Content>                         <Func Flag>0</FuncFlag>                         </xml>";             if($keyword == "?" 
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