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To generate a QR code in Laravel, you can use the "bacon/bacon-qr-code" package. Here are the steps to install and use it:

Install the package via Composer:

 composer require bacon/bacon-qr-code

In your controller or wherever you want to generate the QR code, use the following code:

use BaconQrCode\Renderer\Image\Png;

use BaconQrCode\Writer;

public function generateQRCode($data)

{

    // Generate QR code

    $renderer = new Png();

    $renderer->setHeight(250);

    $renderer->setWidth(250);

    $writer = new Writer($renderer);

    $qrCode = $writer->writeString($data);

    // Return response

    return response($qrCode, 200, [

        'Content-Type' => 'image/png',

        'Content-Disposition' => 'inline; filename="qrcode.png"'

    ]);

}

Call the "generateQRCode" method passing in the data you want to encode into the QR code. For example:

public function showQRCode()

{

    $data = 'https://example.com';

    return $this->generateQRCode($data);

}

To scan a QR code in Laravel, you can use the "zxing" package. Here are the steps to install and use it:

Install the package via Composer:

composer require zxing/zxing

In your controller or wherever you want to scan the QR code, use the following code:

use Zxing\QrReader;

public function scanQRCode($imagePath)

{

    // Scan QR code

    $qr = new QrReader($imagePath);

    $text = $qr->text();

    // Return scanned data

    return $text;

}

Call the "scanQRCode" method passing in the path to the image of the QR code. For example:

public function processQRCode(Request $request)

{

    $imagePath = $request->file('qrcode')->getPathname();

    $data = $this->scanQRCode($imagePath);

    // Do something with the scanned data

}

Note that you will need to have the appropriate image processing libraries installed on your server for the "zxing" package to work.Note that you will need to have the appropriate image processing libraries installed on your server for the "zxing" package to work.