ext/ftp fix ftp_nb_get signature (for failure).

ref: https://github.com/php/doc-en/pull/2331#issuecomment-1448984096

Closes GH-10760.

Add more specific array return type hints for various extensions - part 2

ext/ftp, ext/gmp, ext/intl

Closes GH-7433

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix the return type of ftp_raw()

Fix the return type of ftp_raw() (#7466)

Not serializable flag permeation

Indent stubs inside global namespace blocks (#7261)

Move FTP extension class `FTPConnection` to `FTP\Connection`

With the [namespaces in bundled extensions RFC](https://wiki.php.net/rfc/namespaces_in_bundled_extensions) passed, renaming the n

Move FTP extension class `FTPConnection` to `FTP\Connection`

With the [namespaces in bundled extensions RFC](https://wiki.php.net/rfc/namespaces_in_bundled_extensions) passed, renaming the new `\FTPConnection` class to `\FTP\Connection`.
This also adds an entry to `./UPGRADING` file.

Related: #6925, #5945

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Implicitly enable function entry generation when class entry generation is enabled

Closes GH-6675

Generate class entries from stubs for another batch of extensions

Closes GH-6669

Convert FTP resource to object

Review parameter names in ext/ftp

Closes GH-6254

Promote warnings to exceptions in ext/ftp

Closes GH-6054

Add a bunch of missing argument types to stubs

Fix UNKNOWN default values in various extensions

Closes GH-5514

Generate functions entries from stubs for another set of extensions

Closes GH-5351

Annotate function aliases in stubs

Add stubs for aliases

Closes GH-5187

Add union return types for function stubs

Add stubs for ext/ftp