QR code generating library with HTML/PNG/mPDF output possibilities.
This is based on QrCode library bundled with mPDF until v8.0, made by Laurent Minguet. It is provided under LGPL license.
$ composer require mpdf/qrcode<?php
use Mpdf\QrCode\QrCode;
use Mpdf\QrCode\Output;
$qrCode = new QrCode('Lorem ipsum sit dolor');
// Save black on white PNG image 100 px wide to filename.png. Colors are RGB arrays.
$output = new Output\Png();
$data = $output->output($qrCode, 100, [255, 255, 255], [0, 0, 0]);
file_put_contents('filename.png', $data);
// Echo a SVG file, 100 px wide, black on white.
// Colors can be specified in SVG-compatible formats
$output = new Output\Svg();
echo $output->output($qrCode, 100, 'white', 'black');
// Echo an HTML table
$output = new Output\Html();
echo $output->output($qrCode);