首先每个活动生成不同的二维码

 $hecode = $this->codes($insert_id);
$result = Db::table('')->where("activity_id='$insert_id'")->update(["cancel_code" => $hecode]);
codes的代码如下：

public function codes($goods_id)
    {
        $redirect_url = urlencode('http://' . $_SERVER['SERVER_N[**]ME'] . '/codes?goods_id=' . $goods_id);
        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=xxx&redirect_uri=" . $redirect_url . "&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect";
        $errorCorrectionLevel = 'H';//容错级别
        $matrixPointSize = 3;//图片大小慢慢自己调整，只要是int就行
        $path = 'uploads/qrcode/';  //上传位置
        if (!file_exists($path)) {
            mkdir($path);
        }
        $QR = $QRB = $path . rand(10000, 99999) . time() . ".png";
        QRcode::png($url, $QR, $errorCorrectionLevel, $matrixPointSize, 2);
        return $QR;
    }
然后再跳转的页面进行判断

public function codes(){
        $goods_id = $_REQUEST['goods_id'];
        $code = $_REQUEST['code'];
        $setting = Db::table('setting')->where('id = 1')->find();
        $appid = $setting['appid'];
        $secret = $setting['appsecret'];
        $oauth2Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
        $oauth2 = $this->getJson($oauth2Url);
        $openid = $oauth2['openid'];
        $member = Db::table("")->where("openid = '$openid'")->find();
        if($member){
            $order = Db::table("order")
                ->where("member_id = ".$member['member_id'])
                ->select();
            if($order){
                $yes = Db::table("order")->where("order_id = ".$order[0]['order_id'])->update(['he_status'=>1,'he_time'=>time()]);
                if($yes){
                    $aa = $this->alert('核销成功！','http://www.baidu.com',6,3);
                    echo $aa;
                }else{
                    $aa = $this->alert('核销失败！','http://www.baidu.com',5,3);
                    echo $aa;
 
                }
 
            }else{
                $aa = $this->alert('您没有要核销的订单,请先购买！','http://www.baidu.com',5,3);
                echo $aa;
            }
 
        }else{
            $aa = $this->alert('暂无您的购买信息，请先购买！','http://www.baidu.com',5,3);
            echo $aa;
        }
 
 
    }
    public function getJson($url)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, F[**]LSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, F[**]LSE);
        curl_setopt($ch, CURLOPT_RETURNTR[**]NSFER, 1);
        $output = curl_exec($ch);
        curl_close($ch);
        return json_decode($output, true);
    }
 
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版权声明：本文为CSDN博主「tian_fighting」的原创文章，遵循CC 4.0 BY-S[**]版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/zhangweiguangsunjiao/article/details/91581095