valid();//这里是测试网站配置信息和开发的是否一致。 $wechatObj->responseMsg();//新增加这一项，目的是调用responseMsg()这个功能。 class wechatCallbackapiTest { //若确认此次GET请求来自微信服务器，请原样返回echostr参数内容，则接入生效，否则接入失败。 public function valid() { $echoStr = $_GET["echostr"]; //valid signature , option if($this->checkSignature()){ header('content-type:text'); 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 = " %s 0 "; if(!empty( $keyword ))// $keyword是关键词，即为用户发送的信息 { $msgType = "text";//文本格式的消息 $contentStr = "Welcome to wechat world!";//预制消息回复 if ($keyword == "index") { $contentStr = "welcome to nongdaxy.com"; } if ($keyword == "首页") { $contentStr = "欢迎来到校园之窗"; } $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr); echo $resultStr; }else{ echo "Input something..."; } }else { echo ""; exit; } } // 开发者通过检验signature对请求进行校验 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; } } } ?>