Add ReturnTypeWillChange for PHP 8.1

[szepeviktor]

@Mte90 👀

From #41

[szepeviktor]

@johnbillion Please start me up with 1 sentence how to insert #[\ReturnTypeWillChange] before methods listed in this PR.
Thank you.

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Maybe here?

wordpress-stubs/visitor.php

Lines 150 to 152 in e04781a

	if (! isset($this->functionMap[$this->currentSymbolName])) {
	return null;
	}

[Mte90]

I executed phpstan with those tags and I saw no errors as there also other uses of that attribute in the stubs https://github.com/WordPress/wordpress-develop/search?q=ReturnTypeWillChange

[szepeviktor]

I saw no errors as there also other uses of that attribute

Are these the droids you're looking for? WordPress/Requests#505

[Mte90]

Yeah I remember that there are various tickets for php 8 in wordpress but they are still WIP...

[szepeviktor]

there are various tickets for php 8 in wordpress

1. WordPress core is not fully PHP 8.1 compatible
2. The current WordPress ecosystem is not PHP 8.0 compatible
3. WordPress installations live happily on PHP 7.4 as of 2022

Currently WP v6 contains WordPress/Request v1!
WordPress/Request v2 has these problems fixed.

I couldn't find the issue but I had the idea to exclude packages included in WP core.

• ID3
• PHPMailer
• WordPress/Request
• SimplePie

Would like to be involved?

[Mte90]

I don't see errors from those packages... maybe they are written the right way

[szepeviktor]

This is a dead end.
769dd33

[Mte90]

Well the important part is that at least there will be less issues with this project :-D