Laravel8+ wechat applet generates QR code

First generate access_token

  public function getAccessToken()
    {


        $url ="https://api.weixin.qq.com/cgi-bin/token? grant_type=client_credential&appid=".self::APPID."&secret=".self::SECRET;

        $res = (new Curl())->getUrl($url);

        return $res['access_token'];

    }

Generate qr code

 public function getXcxCode(Request $request)
    {

        $access_token = $this->getAccessToken();

        $url = "https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=" . $access_token;

        $data['scene'] = 'h' . 2;
        // Applet details page path 
        $data['path'] = 'pages/detail/detail';
        // QR code size 
        $data['width'] = '500';
//        dd(json_encode($data));
        $res = (new Curl())->httpRequest($url,json_encode($data),"POST");

        $path = 'upload/' . '2.png';

        file_put_contents($path,$res);

        $return['status_code'] = 2000;

        $return['msg'] = 'ok';

        $return['img'] = 'http://www.dome4.com/' . $path;

        echo '<img src="'.$return['img'].'" />';
        exit;

        echo json_encode($return);
        exit;

    }

Simulation of the request

 public function httpRequest($url, $data='', $method='GET'){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($curl, CURLOPT_AUTOREFERER, 1);
        if($method=='POST')
        {
            curl_setopt($curl, CURLOPT_POST, 1);
            if ($data != '')
            {
                curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
            }
        }

        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        curl_close($curl);
        return $result;
    }