This is targeting 8.0.
`$arg` seems like a poor choice of a name,
especially if the function were to have arguments added.
In many cases, the php.net documentation already has $array for these functions.
E.g. https://www.php.net/manual/en/function.array-intersect.php
I'd assume that since named arguments was added to 8.0 near the feature freeze,
PHP's maintainers had planned to make the names consistent
and gradually use the same name for docs and implementation.
From now on, we always display the given object's type instead of just reporting "object".
Additionally, make the format of return type errors match the format of argument errors.
Closes GH-5625
- Removed the undocumented object support in the leftover array functions [DOC]
(natcasesort, natsort, array_walk, array_walk_recursive, array_unique, array_key_exists)
- Changed HASH_OF() to Z_ARRVAL_P()
- Fixed bug #45937 (array_walk and array_walk_recursive can alter private/protected object variable)
