QRCode

Raxos\Barcode\QRCode encodes data as a QR code with a configurable error correction level. It extends Barcode and inherits its properties and render methods.

Signature

final readonly class QRCode extends Barcode

Methods

__construct

__construct(
    string $data,
    QRCodeErrorCorrectionLevel $errorCorrectionLevel = QRCodeErrorCorrectionLevel::M
)

Builds a QR code matrix for $data. The optional $errorCorrectionLevel is a Raxos\Barcode\Enum\QRCodeErrorCorrectionLevel case (L, M, Q or H) and defaults to M. A higher level adds redundancy so the code stays scannable when partly damaged, at the cost of a denser matrix.

Internally the class uses QRCodeEncoder and chillerlan/php-qrcode to build the matrix.

Inherited members

From Barcode: the data, format, height, width and matrix properties, and the renderPng and renderSvg methods. The format property is always BarcodeFormat::QR.

Example

<?php
declare(strict_types=1);

use Raxos\Barcode\QRCode;
use Raxos\Barcode\Enum\QRCodeErrorCorrectionLevel;

$qr = new QRCode('https://bas.dev', QRCodeErrorCorrectionLevel::Q);

$png = $qr->renderPng(scale: 6, margin: 12);

header('Content-Type: image/png');
echo $png;