Home\Controller\CommonController::qrcode PHP Method

    public function qrcode()
    {
        Vendor('Phpqrcode.phpqrcode');
        $url = I("url");
        $size = I("size") ? I("size") : 6;
        $object = new \QRcode();
        $object->png($url, false, 3, $size, 2);
    }