public function notify_msg($fromAppId){

        CLogger::info(‘微信消息1’,$_GET);

        CLogger::info(‘微信消息2’.file_get_contents(“php://input”) );

        $timeStamp    = $this->input->get_post(‘timestamp’);

        $nonce        = $this->input->get_post(‘nonce’);

        $msg_sign     = $this->input->get_post(‘msg_signature’);

        $encryptMsg   = file_get_contents(‘php://input’);

        if(!$encryptMsg){

            CLogger::error(‘notify_msg没有input’);

            echo ‘error’; exit();

        }

        $token = ‘paitume’;

        $encodingAesKey = ‘后台定义的解密字符串43位’;

        $myAppId = ‘自己的第三方appid’;

        //解密消息

        $pc = new WxBizMsgCrypt($token, $encodingAesKey, $myAppId);

        $xml_tree = new DOMDocument();

        $xml_tree->loadXML($encryptMsg);

        $array_e = $xml_tree->getElementsByTagName(‘Encrypt’);

        $encrypt = $array_e->item(0)->nodeValue;

        //替换百分号

        $format = “<xml><ToUserName><![CDATA[toUser]]></ToUserName><Encrypt><![CDATA[%s]]></Encrypt></xml>”;

        $from_xml = sprintf($format, $encrypt);

        // 解密

        $msg = ‘’;

        $errCode = $pc->decryptMsg($msg_sign, $timeStamp, $nonce, $from_xml, $msg);

        if ($errCode == 0) {

            CLogger::info(‘解密成功’,[$msg]);

            $xml = new DOMDocument();

            $xml->loadXML($msg);

            $array_content = $xml->getElementsByTagName(‘Content’);

            $array_user = $xml->getElementsByTagName(‘FromUserName’);

            $fromUserOpenId = $array_user->item(0)->nodeValue;

            $content = $array_content->item(0)->nodeValue;

            if($content == ‘TESTCOMPONENT_MSG_TYPE_TEXT’){

                CLogger::info(‘发送TESTCOMPONENT_MSG_TYPE_TEXT_callback’);

                $time = time();

                header(“Content-type:text/xml”);

                $xml = new \SimpleXMLElement(’<xml></xml>’);

                $sendData[‘ToUserName’] = $fromUserOpenId;

                $sendData[‘FromUserName’] =‘gh_xxxxxxx’;//你的原始appID

                $sendData[‘CreateTime’] = $time;

                $sendData[‘MsgType’] = ‘text’;

                $sendData[‘Content’] = ‘TESTCOMPONENT_MSG_TYPE_TEXT_callback’;

                $this->_data2xml($xml, $sendData);

                $str = $xml->asXML();

                $sEncryptMsg = “”; //xml格式的密文

                $errCode = $pc->encryptMsg($str, $time, $nonce, $sEncryptMsg);

                CLogger::info(‘加密消息’.$errCode.’—’.$sEncryptMsg);

                echo $sEncryptMsg;

                exit();

            } else if(strpos($content,‘QUERY_AUTH_CODE’) !== false){

                CLogger::info(‘消息包含QUERY_AUTH_CODE’.$content);

                echo “”;

                $queryAuthCode = str_replace(‘QUERY_AUTH_CODE:’,’’,$content);

                $componentAccessToken = $this->getComponentAccessToken();

                $url = 'https://api.weixin.qq.com/cgi-bin/component/api_query_auth?component_access_token=’.$componentAccessToken;

                $authDataArray[‘component_appid’] = $myAppId;

                $authDataArray[‘authorization_code’] = $queryAuthCode;

                $authResult = $this->curl_post($url, json_encode($authDataArray));

                CLogger::info(‘授权Auth返回’,$authResult);

                $authorizationInfo = $authResult[‘authorization_info’];

                $authorizerAccessToken = $authorizationInfo[‘authorizer_access_token’];

                if($authorizerAccessToken){

                    $sendMsgUrl = 'https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=’.$authorizerAccessToken;

                    $msgData[‘access_token’] = $authorizerAccessToken;

                    $msgData[‘touser’] = $fromUserOpenId;

                    $msgData[‘msgtype’] = ‘text’;

                    $msgData[‘text’] = [‘content’=>$queryAuthCode.’_from_api’];

                    $sendMsgResult = $this->curl_post($sendMsgUrl, json_encode($msgData));

                    CLogger::info(‘发送客服消息返回’.json_encode($sendMsgResult));

                }

            }

        } else {

            CLogger::error(‘消息解密失败’);

        }

    }