This PHP library allows generating Check-In URLs for the Corona Warn App which can then be used to generate a QR code from. Moreover, event details can be extracted from existing Check-In URLs.
This library does not generate a QR code image. A dedicated library for QR code generation can be used for that, either in PHP or client side using JavaScript. A QR code generated from the check-in URL will open the Corona Warn App on mobile devices.
composer require bauer-kirch/cwa-event-registration-url
use BauerKirch\CoronaWarnAppEventRegistration\QRCodePayloadReader;
$url = 'https://e.coronawarn.app/?v=1#CAESR...';
$reader = new QRCodePayloadReader();
$result = $reader->readUrl($url);
echo $result->getDescription();
use BauerKirch\CoronaWarnAppEventRegistration\LocationType;
use BauerKirch\CoronaWarnAppEventRegistration\QRCodePayloadGenerator;
$generator = new QRCodePayloadGenerator();
$url = $generator->generateQRCodeUrl(
LocationType::permanentWorkplace(),
'Bauer + Kirch GmbH',
'Pascalstr. 57, 52076 Aachen',
120 // default check-in time in minutes
);
echo $url;