Add generic typings to array_uintersect

[axlon]

This PR adds generic typings to array_uintersect, I copied the annotations from array_udiff

[axlon]

This PR is a partial fix for phpstan/phpstan#7707, if this PR is the correct way to do this I can add support for the other functions mentioned as well

[phpstan-bot]

This pull request has been marked as ready for review.

[schlndh]

@axlon BTW: The same fix is already implemented here: #3282

[axlon]

@axlon BTW: The same fix is already implemented here: #3282

I see, I missed this when looking through issues. However there's a slight difference in that the arrays can be different per @ondrejmirtes' suggestion.

The same issue with that PR is still present here; the definitions of these functions are wrong, but merging this would get us closer to PHPStan fully understanding these functions

[schlndh]

@axlon You're right. Feel free to take whatever you want from the original PR, if you decide to expand this one to cover all similar functions. Alternatively, I'm also around to update my PR if ondrejmirtes prefers that.

[axlon]

I'll try to take a look at this soon

[axlon]

I think I've found a way to document these functions where they're quite accurate (so far), but I hit a roadblock with array shapes; PHPStan seems to add an integer key to the return type whenever the first argument is an array shape. I've added failing tests in the last commit and I will try to figure out why this is happening

[schlndh]

@axlon It looks like it might be possible to work around it by using array<K, V> and then K, instead of T of array and key-of<T>: https://phpstan.org/r/f5f9cb93-4b83-4042-a91f-cd76d4a1789c

[axlon]

@axlon It looks like it might be possible to work around it by using array<K, V> and then K, instead of T of array and key-of<T>: https://phpstan.org/r/f5f9cb93-4b83-4042-a91f-cd76d4a1789c

I'll check that out! Not only does this fix the issue, it also makes the return types more accurate 👌

[axlon]

@ondrejmirtes please check this out when you find the time, and let me know if this is the way forward. If it is I'll work on adding the remaining array functions listed in the original issue.

As far as the failing tests go:

• The PHP 7.4 tests probably fail because of mixed (I suppose I should exclude them for PHP 7.4?)
• The other failing workflows seem unrelated (to my eyes)

[phpstan-bot]

This pull request has been marked as ready for review.

[ondrejmirtes]

#3282 seemed a bit more complete to me so I merged that. Thank you.