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

Fixed GH-11368: Date modify returns invalid datetime

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

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

Fix GH-9891: DateTime modify with unixtimestamp (@) must work like setTimestamp

Fixed GH-9763: DateTimeZone ctr mishandles input and adds null byte if the argument is an offset larger than 100*60 minutes

Add 'const' to match actual API

Fixed bug #80047 (DatePeriod doesn't warn with custom DateTimeImmutable)

Revert "Fixed #80047: DatePeriod doesn't warn with custom DateTimeImmutable"

This reverts commit 973c3f6e241227ffc14c3608c774d7636b798cec.

Fix redundant ZSTR_VAL condition in php_date.c (#8753)

ZSTR_VAL can never be NULL as zend_string.val is a char[1] which will
always decay to a non-nullable pointer.

This fails w

Fix redundant ZSTR_VAL condition in php_date.c (#8753)

ZSTR_VAL can never be NULL as zend_string.val is a char[1] which will
always decay to a non-nullable pointer.

This fails with -Werror on newer gcc versions.

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Add support for sensitive parameters in stubs

Improve error message, and add additional test.

Remove no longer used 'timezone_valid' flag

Only warn when an incorrect timezone is set through 'date.timezone'

Update wording of warning message, and reinstate 'UTC' fallback for ctor

Fixed bug #73239 (DateTime shows strange error message with invalid timezone)

Declare DatePeriod properties (#8534)

Fixed merge due to changed return type in API

Add support for class constants in stubs (#7434)

Add serialisation support for the new 'include_end_date' property

Fixed bug #52015 (Allow including end date in DatePeriod iterations)

Add "N" and "o" format specifiers to idate()

GH-8458: DateInterval::createFromDateString does not throw non-relative items are present

Add DatePeriod's __serialize and __unserialize methods (#8464)