I've made some modifications to ext/intl's IntlCalendar/IntlTimeZone to
improve interoperability.
* DateTimeZone is now accepted in all places time zones are expected in
IntlCalendar.
* Added IntlTimeZone::toDateTimeZone() and
IntlTimeZone::fromDateTimeZone().
* Added IntlCalendar::toDateTime() and IntlCalendar::fromDateTime().
Unfortunately, ext/date doesn't expose a lot of interfaces to manipulate
its objects, so in some places I ended up having to call PHP_FUNCTIONs (in
one case even twice doing to a bug; see
https://github.com/cataphract/php-src/commit/3a81f90ebc51140484c617539b1a5fb0e117f4e2#L1R1264
).
The conversion from DateTimeZone to IntlTimeZone is made through the ids
only because ext/date doesn't expose interfaces to efficiently implement
ICU's TimeZone. This may lead to some different behavior for the same time
zone id if the databases are out of sync.
The changes are here:
https://github.com/cataphract/php-src/compare/intl_calendar
If no one objects, I'll merge it soon.
--
Gustavo Lopes
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