addByteSegment with variable

[sks1024]

How can I add a variable in the string of the addByteSegment function?

$qrcode->addByteSegment('https://domain.com/track.php?$randstring');

the URL in the QR code is getting $randstring instead of the string I geenrated. Generator is workjing correctly.

[sks1024]

Well after some testing it appears I can't add aything to the URL

i.e. https://domain.com/track.php?qr=$randstring

If I use $qrcode->addByteSegment("https://danville.qr?$randstring"); it works just fine.

What can I do to be able to use special characters in this URL?

[codemasher]

This has nothing to do with the library. It would help if you first become familiar with the programming language - this is a topic for the phphelp subreddit.
https://php-qrcode.readthedocs.io/en/stable/Appendix/Contribute.html

[sks1024]

It looks like its throwing a max bits error when I add the variable. I can echo the string with the variable in it and it echos fine.

$data = "https://danville.qr/track?qr=$randstring";

print $data;
//https://danville.qr/track?qr=IcLZtrHcyukk4Ny3tKM6N8vo

$qrcode->addByteSegment($data);

$qrOutputInterface = new QRImageWithLogo($options, $qrcode->getQRMatrix());

Fatal error: Uncaught chillerlan\QRCode\Data\QRCodeDataException: code length overflow. (460 > 368 bit) in /home/admin/domains/danville.qr/public_html/vendor/chillerlan/php-qrcode/src/Data/QRData.php:224 Stack trace: #0 /home/admin/domains/danville.qr/public_html/vendor/chillerlan/php-qrcode/src/Data/QRData.php(82): chillerlan\QRCode\Data\QRData->writeBitBuffer() #1 /home/admin/domains/danville.qr/public_html/vendor/chillerlan/php-qrcode/src/Data/QRData.php(67): chillerlan\QRCode\Data\QRData->setData() #2 /home/admin/domains/danville.qr/public_html/vendor/chillerlan/php-qrcode/src/QRCode.php(111): chillerlan\QRCode\Data\QRData->__construct() #3 /home/admin/domains/danville.qr/public_html/add_qr_do.php(162): chillerlan\QRCode\QRCode->getQRMatrix() #4 {main} thrown in /home/admin/domains/danville.qr/public_html/vendor/chillerlan/php-qrcode/src/Data/QRData.php on line 224****

[codemasher]

Which means you have issued a fixed QR version number and the string provided with the interpolated variable is too long to fit into the QR symbol. Enable auto detection or set a wider range https://php-qrcode.readthedocs.io/en/stable/Usage/Configuration-settings.html#version
https://www.qrcode.com/en/about/version.html

[sks1024]

I was using a 24 charcater variable. I changed it to 12 and it worked. Would you mind showing me where to change this so I can use longer variables like a 24 character one?

Wouild it be here?

$options = new QROptions;
$options->version = 5;

[codemasher]

yes this exactly - you can either remove this option entirely which will trigger auto detection, or increase the number.