PHP 8.4 deprecation of implicit nullable

[campbell-m]

Running QRCode against PHP 8.4.0alpha1 gives a number of E_DEPRECATED error messages, eg

E_DEPRECATED in C:\inetpub\wwwroot\abcd\lib\chillerlan\QRCode\QRCode.php at line 80
chillerlan\QRCode\QRCode::render(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead

[codemasher]

Hey, I am aware of this issue (https://wiki.php.net/rfc/deprecate-implicitly-nullable-types). PHP 8.4 is a couple more months down the road, implicit nullables will be fixed until then.

[campbell-m]

OK, thanks.

[codemasher]

Just as a heads-up, this is what currently happens when I enable PHP 8.4 on CI: https://github.com/chillerlan/php-settings-container/actions/runs/9947535033/job/27480365765 (spoiler: countless warnings from dev-dependencies)

[codemasher]

@campbell-m I've pushed a fix to address this issue to the v4 and v5 as well as dev-main (upcoming v6) branches. Can you perhaps check if this resolves the issue for you?

The composer tags are:

• dev-main#f65d9d2815b4362fde0cac18205ca7b711692a8c f65d9d2
• v5.0.x-dev#beecbe7ba5f4776bd8bd7e69d84d0c7dc8a94983 beecbe7
• v4.3.x-dev#f6c4da9ce405b5a7815c8d882b3d85c5514f6f1d f6c4da9

[campbell-m]

Many thanks. That seems to fix the issues.

[codemasher]

I'm going to reopen this as this is probably not done yet. It's still not possible to run tests on CI under PHP 8.4 as dependencies will cause trouble.