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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Improve class entry generation

Related to GH-6701

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

Include stub hash in generated arginfo files

The hash is used to check whether the arginfo file needs to be
regenerated. PHP-Parser will only be downloaded if this is actually
necess

Include stub hash in generated arginfo files

The hash is used to check whether the arginfo file needs to be
regenerated. PHP-Parser will only be downloaded if this is actually
necessary.

This ensures that release artifacts will never try to regenerate
stubs and thus fetch PHP-Parser, as long as you do not modify any
files.

Closes GH-5739.

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Fix UNKNOWN default values in various extensions

Closes GH-5514

Store default parameter values of internal functions in arg info

Closes GH-5353. From now on, PHP will have reflection information
about default values of parameters of internal function

Store default parameter values of internal functions in arg info

Closes GH-5353. From now on, PHP will have reflection information
about default values of parameters of internal functions.

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

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Generate functions entries from stubs for another set of extensions

Closes GH-5351

Add stubs for aliases

Closes GH-5187

Add union return types for function stubs

Add stubs for ext/ftp