AlipayNotify::verifyReturn PHP Method

    public function verifyReturn()
    {
        if (empty($_GET)) {
            //判断POST来的数组是否为空
            return false;
        } else {
            //生成签名结果
            $isSign = $this->getSignVeryfy($_GET, $_GET['sign']);
            //获取支付宝远程服务器ATN结果（验证是否是支付宝发来的消息）
            $responseTxt = 'true';
            if (!empty($_GET['notify_id'])) {
                $responseTxt = $this->getResponse($_GET['notify_id']);
            }
            //写日志记录
            //if ($isSign) {
            //	$isSignStr = 'true';
            //}
            //else {
            //	$isSignStr = 'false';
            //}
            //$log_text = "responseTxt=".$responseTxt."\n return_url_log:isSign=".$isSignStr.",";
            //$log_text = $log_text.createLinkString($_GET);
            //logResult($log_text);
            //验证
            //$responsetTxt的结果不是true，与服务器设置问题、合作身份者ID、notify_id一分钟失效有关
            //isSign的结果不是true，与安全校验码、请求时的参数格式（如：带自定义参数等）、编码格式有关
            if (preg_match('/true$/i', $responseTxt) && $isSign) {
                return true;
            } else {
                return false;
            }
        }
    }

    function respond() {
        
        ini_set("display_errors","On");
        $where = array('ologin_code'=>front::$get['ologin_code']);
        $ologins = ologin::getInstance()->getrows($where);
        $ologin = unserialize_config($ologins[0]['ologin_config']);

        //var_dump($ologin);
        
        $aliapy_config['partner'] = $ologin['alipaylogin_id'];
        $aliapy_config['key'] = $ologin['alipaylogin_key'];
        $aliapy_config['return_url'] = ologin::url(basename(__FILE__,'.php'));
        $aliapy_config['sign_type']    = 'MD5';
        $aliapy_config['input_charset']= 'utf-8';
        $aliapy_config['transport']    = 'http';
        $aliapy_config['cacert']    = getcwd().'/lib/plugins/alipayauth/cacert.pem';
        //var_dump($aliapy_config);
        unset($_GET['case']);unset($_GET['act']);unset($_GET['ologin_code']);unset($_GET['site']);
        require_once("alipayauth/alipay_notify.class.php");
        $alipayNotify = new AlipayNotify($aliapy_config);
        //var_dump($alipayNotify);
        $verify_result = $alipayNotify->verifyReturn();
        //var_dump($verify_result);
        if($verify_result) {//验证成功
            $user_id = front::$get['user_id'];
            $token = front::$get['token'];
            session::set('access_token',$token);
            session::set("openid",$user_id);
            return array('nickname'=>  front::get('real_name'));
        }
        else {
            echo "验证失败";exit;
        }
    }