thinkphp5 framework and Android implement QR code generation code

1 "repositories": {
2         "packagist": {
3             "type": "composer",
4             "url": " 
5         }
6     }

use Endroid\QrCode\QrCode;

    $qrCode=new QrCode();
        $url = 'A150';

        $qrCode->setText($url)
            ->setSize(200)//大小
            ->setLabelFontPath(VENDOR_PATH.'endroid\qrcode\assets\noto_sans.otf')
            ->setErrorCorrectionLevel('high')
            ->setForegroundColor(array('r' => 0, 'g' => 0, 'b' => 0, 'a' => 0))
            ->setBackgroundColor(array('r' => 255, 'g' => 255, 'b' => 255, 'a' => 0))
            ->setLabel('桌码  A150')
            ->setLabelFontSize(16);

        header('Content-Type: '.$qrCode->getContentType());

        ob_clean();  /*解决提示 图像错误，无法显示问题*/

        echo $qrCode->writeString();
        exit;