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  1. Check if this zone has the same rules and offset as another zone

  2. Mar 9, 2026 · IntlTimeZone::getWindowsID — Translate a system timezone into a Windows timezone IntlTimeZone::hasSameRules — Check if this zone has the same rules and offset as another zone IntlTimeZone::toDateTimeZone — Convert to DateTimeZone object IntlTimeZone::useDaylightTime — Check if this time zone uses daylight savings time

  3. Simple usage example of `IntlTimeZone::hasSameRules ()`. The `IntlTimeZone::hasSameRules` function is used in PHP to check whether a specific time zone has the same rules and offset as another time zone. This function can be useful when comparing different time zones to determine if they follow the same regulations and have the same offset.

  4. IntlTimeZone::getWindowsID — Translate a system timezone into a Windows timezone IntlTimeZone::hasSameRules — Check if this zone has the same rules and offset as another zone IntlTimeZone::toDateTimeZone — Convert to DateTimeZone object IntlTimeZone::useDaylightTime — Check if this time zone uses daylight savings time

  5. IntlTimeZone::getWindowsID — Translate a system timezone into a Windows timezone IntlTimeZone::hasSameRules — Check if this zone has the same rules and offset as another zone IntlTimeZone::toDateTimeZone — Convert to DateTimeZone object IntlTimeZone::useDaylightTime — Check if this time zone uses daylight savings time

  6. IntlTimeZone::getRawOffset — Get the raw GMT offset (before taking daylight savings time into account IntlTimeZone::getTZDataVersion — Get the timezone data version currently used by ICU IntlTimeZone::hasSameRules — Check if this zone has the same rules and offset as another zone IntlTimeZone::toDateTimeZone — Convert to DateTimeZone object

  7. IntlTimeZone::hasSameRules -- intltz_has_same_rules — Vérifie si cette zone a les mêmes règles qu'une autre