Available on php
See also:
https://www.php.net/manual/en/class.intltimezone.php
@:phpClassConststaticfinalread onlyDISPLAY_LONG:Int
@:phpClassConststaticfinalread onlyDISPLAY_SHORT:Int
staticcountEquivalentIDs(zoneId:String):Int
staticcreateDefault():IntlTimeZone
staticcreateEnumeration(countryOrRawOffset:Any):IntlIterator<Int, String>
staticcreateTimeZone(zoneId:String):IntlTimeZone
staticcreateTimeZoneIDEnumeration(zoneType:Int, ?region:String, ?rawOffset:Int):EitherType<IntlIterator<Int, String>, Bool>
staticfromDateTimeZone(zoneId:DateTimeZone):IntlTimeZone
staticgetCanonicalID(zoneId:String, isSystemID:Ref<Bool>):String
staticgetEquivalentID(zoneId:String, index:Int):String
staticgetGMT():IntlTimeZone
staticgetIDForWindowsID(timezone:String, ?region:String):EitherType<String, Bool>
staticgetRegion(zoneId:String):EitherType<String, Bool>
staticgetTZDataVersion():String
staticgetUnknown():Null<IntlTimeZone>
staticgetWindowsID(timezone:String):EitherType<String, Bool>
getDSTSavings():Int
getDisplayName(?isDaylight:Bool, ?style:Int, ?locale:String):String
getErrorCode():Int
getErrorMessage():String
getID():String
getOffset(date:Float, local:Bool, rawOffset:Ref<Int>, dstOffset:Ref<Int>):Bool
getRawOffset():Int
hasSameRules(otherTimeZone:IntlTimeZone):Bool
toDateTimeZone():DateTimeZone
useDaylightTime():Bool