[3.8] Fix fatal error on Stub generator script

[joomdonation]

Pull Request for Issue # .

Summary of Changes

This small PR fixes fatal error while running Stub generator script introduced by PR #16291

Testing Instructions

Follow the instructions at #16291 to run the script. Before patch, you will get fatal error. After path, the error is gone, stubs.php is generated properly.

Additional comment

There is still an issue with the generated subs.php file. The class name is in lower case

class jregistry extends \Joomla\Registry\Registry {}

instead of

class JRegistry extends \Joomla\Registry\Registry {}

as expected. It causes by some changes in JLoader in this PR #17834 .

[Bakual]

The fatal error is due to a bug in PHP 7. Update to PHP 7.1 and the stubGenerator will work.

I'm not sure why you think the lowercasing of the class name is an issue. In PHP class names are case insensitive, so this shouldn't matter at all.

[joomdonation]

The fatal error is due to a bug in PHP 7. Update to PHP 7.1 and the stubGenerator will work.

Ah, thanks. I still run on PHP 7.0.4 on my local computer.

I'm not sure why you think the lowercasing of the class name is an issue. In PHP class names are case insensitove, so this shouldn't matter at all.

In my case, the IDE still complains Class reference is not case-sensitive, so I think it is better to have class names in correct case (no complains from IDE at all)

Since the main issue fatal error only happens with PHP 7.0.x, I am closing this PR.

[Bakual]

When the alias is registered, it is cast to lowercase: https://github.com/joomla/joomla-cms/blob/staging/libraries/loader.php#L381

That's why the alias are lowercased in the stubs file as well. I don't think we can change that for the stubs file.

[joomdonation]

Yes, I see that, it causes by the change in PR #17834 as I mentioned in this PR description. There is a way to fix it (require changes to JLoader), but since it is not a big thing (and it is not safe to change JLoader at this time), so we will leave it as how it is.