general signatures discrepencies fixes (#13122)

Fix #44383: PHP DateTime not converted to xsd:datetime

Closes GH-12437.
Closes GH-11725.

Deprecate calling DatePeriod::__construct() with less than 3 arguments

Added DateTime[Immutable]::createFromTimestamp / date_create_[immutable]_from_timestamp

Use zend_error_noreturn for E_ERROR consistently

To be clear, these already don't return. zend_error_noreturn just hints at this
fact through the ZEND_NORETURN attribute.

Closes

Use zend_error_noreturn for E_ERROR consistently

To be clear, these already don't return. zend_error_noreturn just hints at this
fact through the ZEND_NORETURN attribute.

Closes GH-12204

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Update initialisation check for new PHP-8.3 API

Fix GH-11416: Crash with DatePeriod when uninitialised objects are passed in (PHP 8.2+)

Fix GH-11416: Crash with DatePeriod when uninitialised objects are passed in

Make the new DatePeriod::createFromISO8601String method emit DateTimeImmutable objects

CS

Implement DatePeriod::createFromISO8601String()

Fixed GH-11368: Date modify returns invalid datetime

Fix GH-11455: Segmentation fault with custom object date properties

Closes GH-11473.

Fix GH-11281: DateTimeZone::getName() does not include seconds in offset

If the seconds portion is non-zero, include the seconds in the output.

Closes GH-11282.

Fix GH-10583: DateTime modify with tz pattern should not update linked timezone

Use new ZSTR_INIT_LITERAL macro (#10879)

Fixed oss-fuzz #56931

Fix GH-10747: Private and protected properties in serialized Date* objects throw

ext: make various internal functions static (#10650)

Namely in:
* ext/date
* ext/libxml
* ext/dba
* ext/curl

Make lots of string pointers `const` (#10646)

This allows using string literals without implicitly casting away the
`const`.

Zend/zend_types.h: deprecate zend_bool, zend_intptr_t, zend_uintptr_t (#10597)

These types are standard C99.

For compatibility with out-of-tree extensions, keep the typedefs
in

Zend/zend_types.h: deprecate zend_bool, zend_intptr_t, zend_uintptr_t (#10597)

These types are standard C99.

For compatibility with out-of-tree extensions, keep the typedefs
in main/php.h.

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Fixed OSS fuzz issues #55589, #55599, and #55727

Implement More Appropriate Date/Time Exceptions RFC

Fixed GH-10447: 'p' format specifier does not yield 'Z' for 00:00

Fix GH-10152: Custom properties of Date's child classes are not serialised