php微信开发之关键词回复功能

<?php/** * wechat php test *///define your tokendefine("TOKEN", "weixin");$wechatObj = new wechatCallbackapiTest();//$wechatObj->valid();$wechatObj->responseMsg();class wechatCallbackapiTest{ public function valid() { $echoStr = $_GET["echostr"]; //valid signature , option if($this->checkSignature()){  echo $echoStr;  exit; } } public function responseMsg() { //get post data, May be due to the different environments $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //extract post data if (!empty($postStr)){  $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);  $fromUsername = $postObj->FromUserName;  $toUsername = $postObj->ToUserName;  $keyword = trim($postObj->Content);  $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(!empty( $keyword ))  {   $msgType = "text";   if($keyword=="1"){   $contentStr = "qiphon";}   if($keyword=="2"){   $contentStr = "最新资讯：《环境违法行为举报奖励办法》";}   if($keyword=="3"){   $contentStr = "31离婚协议/n32租房合同/n33交通事故协议书";}      $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);   echo $resultStr;  }else{   echo "Input something...";  } }else {  echo "";  exit; } } private function checkSignature() { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"];  $token = TOKEN; $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr); $tmpStr = implode( $tmpArr ); $tmpStr = sha1( $tmpStr ); if( $tmpStr == $signature ){  return true; }else{  return false; } }}?>