ext/mysqli: Deprecate mysqli_stmt_init

[kamil-tekiela]

This was mostly replacing mysqli_stmt_init + mysqli_stmt_prepare with mysqli_prepare.

The unrelated changes are either fixing typos or removing dead code.

[NickSdot]

echo$exception::class, ': ', $exception->getMessage(), "\n";

If you want while you are on it.

[kamil-tekiela]

No, let's do that separately. This PR already has too many unrelated changes.

[DanielEScherzer]

please rebase this and regenerate the arginfo, it will use the new ZEND_STR_8_DOT_6 known string, see #23222

[kamil-tekiela]

please rebase this and regenerate the arginfo, it will use the new ZEND_STR_8_DOT_6 known string, see #23222

Do I have to modify the stub file again?

[DanielEScherzer]

please rebase this and regenerate the arginfo, it will use the new ZEND_STR_8_DOT_6 known string, see #23222

Do I have to modify the stub file again?

no, just run the gen_stub script

[kamil-tekiela]

Adding whitespace, regenarating and removing whitespace worked.

[DanielEScherzer]

Adding whitespace, regenarating and removing whitespace worked.

Ah, I guess that if the stub file hasn't changed it wouldn't run again by default, I just always use build/gen_stub.php -f --generate-optimizer-info --verify so I forgot about that

done

[NickSdot]

CI failure looks like it's something running tests in parallel exposed. I am on it.

Edit: opened #23225