Deprecate calling IntlCalendar::set() with more than 2 arguments and intlcal_set()

Typed constants in Intl extenstion (#12360)

Implement IntlGregorianCalendar::createFromDate() and IntlGregorianCalendar::createFromDateTime()

Add IntlCalendar::setDate() and IntlCalendar::setDateTime()

Narrow bool return types to true when possible

Declare ext/intl constants in stubs - part 11 (#9281)

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

Make IntlCalendar::roll() return type tentative

This method did not have a type in PHP 8.0 and is not final, so
the new return type should be tentative.

Backport some intl stub changes from master

While we're not sure under what circumstances they would fail,
they're fallible on the implementation level.

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

Generate ext/intl class entries from stubs

Closes GH-6670

Sync intlcal_create_instance() and IntlCalendar::createInstance()

Remove the explicit mention of IntlGregorianCalendar in the latter.
It is a subclass of IntlCalendar, and as such covere

Sync intlcal_create_instance() and IntlCalendar::createInstance()

Remove the explicit mention of IntlGregorianCalendar in the latter.
It is a subclass of IntlCalendar, and as such covered if only
IntlCalendar is used as the return type.

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Verify parameter names of function aliases

Closes GH-6335

Improve parameter names in ext/intl

Closes GH-6309

Add more precise type info for stubs

Closes GH-6005

Add another round of missing parameter types to stubs

Closes GH-5950

Warning to ValueError promotion in Intl extension Part 1

Affects:
- IntlCalendar
- IntlGregorianCalendar
- IntlBreakIterator

Closes GH-5669

Fix IntlGregorianCalendar constructor signature

Give these conversative UNKNOWN defaults and no types, as the
overload is something of a mess.

Generate method entries for ext/intl

Closes GH-5370

Do not include the same stub multiple times

Closes GH-5322

Revert "Replace @param annotations with type declarations"

This reverts commit c31029f335ca1b453af799805c43c37e959ad555.

Replace @param annotations with type declarations

Add stubs for IntlCalendar

Closes GH-4846