Revert "Merge branch 'PHP-8.2'"

This reverts commit 45a3f178dc226b69f5d72f10285bc2ad139b2c1c, reversing
changes made to b2a54bc6af4bf645b5bb2601621c12b31bfbff0c.

ext/intl: dateformatter settimezone changes on success, returning true like setcalendar.

Closes GH-10790

Correct IntlDateFormatter::formatObject params

Closes GH-9341.

Declare ext/intl constants in stubs - part 4 (#9234)

Fix GH-7939: Cannot unserialize IntlTimeZone objects

As it is now, `IntlTimeZone`, `IntlCalendar` and `IntlDateFormatter`
and some other intl class instances can be serialized, but the

Fix GH-7939: Cannot unserialize IntlTimeZone objects

As it is now, `IntlTimeZone`, `IntlCalendar` and `IntlDateFormatter`
and some other intl class instances can be serialized, but the
representation is meaningless, and unserialization yields uninitialized/
unusable objects. To prevent users from noticing this too late, we deny
serialization of such objects in the first place.

Closes GH-7945.

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

ext/ftp, ext/gmp, ext/intl

Closes GH-7433

Declare tentative return types for ext/intl (#6986)

Make date/time type arguments of IntlDateFormatter ctor optional

Default them to IntlDateFormatter:FULL, which has value 0, which
was what you would get if you passed null to these argum

Make date/time type arguments of IntlDateFormatter ctor optional

Default them to IntlDateFormatter:FULL, which has value 0, which
was what you would get if you passed null to these arguments in
weak typing mode. The documentation called this ICU's default
date/time type.

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Improve class entry generation

Related to GH-6701

Make IntlDateFormatter ctor $pattern nullable

The implementation already made this argument nullable, but it
was not reflected in the stub.

Generate ext/intl class entries from stubs

Closes GH-6670

Sync datefmt_get_calendar_object signature

In this case, it's only a matter of using the same type order
in both cases.

Improve parameter names in ext/intl

Closes GH-6309

More precise type information for datefmt_format()

Declare array|int and object-of-class|int types in stubs

Closes GH-6081

Co-Authored-By: Nikita Popov <nikic@php.net>

Add more precise type info for stubs

Closes GH-6005

Add another round of missing parameter types to stubs

Closes GH-5950

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 some UNKNOWN default values

In ext/ffi, ext/intl, ext/mysqli, and ext/pcntl

Generate method entries for ext/intl

Closes GH-5370

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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Do not include the same stub multiple times

Closes GH-5322

Add stubs for IntlDateFormatter & MessageFormatter

Closes GH-4812