Correct IntlDateFormatter::formatObject params

Closes GH-9341.

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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Merge branch 'PHP-8.0'

* PHP-8.0:
Use E_ERROR to report arginfo/zpp mismatch
Make NumberFormatter ctor $pattern nullable
Make IntlDateFormatter ctor $pattern nullable

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

Fix some UNKNOWN default values

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

Generate method entries for ext/intl

Closes GH-5370

Do not include the same stub multiple times

Closes GH-5322

Add stubs for IntlDateFormatter & MessageFormatter

Closes GH-4812