Note that Yii 1.1 has reached end of life and will only receive necessary security fixes and fixes to adjust the code for compatibility with PHP 7 and 8 if they do not cause breaking changes. This allows you to keep your servers PHP version up to date in the environments where old Yii 1.1 applications are hosted and stay within the version ranges supported by the PHP team.

Currently tested and supported up to PHP 8.2.

can be reported at Yii https://github.com/yiisoft/yii/issues see https://github.com/yiisoft/yii/issues/4552

As said here:
https://github.com/yiisoft/yii/issues/4552#issuecomment-2258038752

We can use:
https://github.com/yiisoft/yii/pull/4553/files

Should we apply changes manually? I guess right?
@c_schmitz?

yes, please go ahead

I don't think we need to do anything about this.

The errors that popped up in the rector refer to things that were removed in PHP 7.2 and 7.0. Obviously we're not using them. If not, would have pop up earlier.

The only change I see in the PR (PHP 8.3 compatibility by marcovtwout · Pull Request #4553 · yiisoft/yii ) is in the setLocaleDataPath() method of CApplication, which we're not using either.

Ok, can I close this one then?

I think you can close it. If we found an issue when testing, we will re open it.