(PHP 5 >= 5.2.0, PHP 7)
Representation of time zone.
DateTimeZone::AFRICAAfrica time zones.
DateTimeZone::AMERICAAmerica time zones.
DateTimeZone::ANTARCTICAAntarctica time zones.
DateTimeZone::ARCTICArctic time zones.
DateTimeZone::ASIAAsia time zones.
DateTimeZone::ATLANTICAtlantic time zones.
DateTimeZone::AUSTRALIAAustralia time zones.
DateTimeZone::EUROPEEurope time zones.
DateTimeZone::INDIANIndian time zones.
DateTimeZone::PACIFICPacific time zones.
DateTimeZone::UTCUTC time zones.
DateTimeZone::ALLAll time zones.
DateTimeZone::ALL_WITH_BCAll time zones including backwards compatible.
DateTimeZone::PER_COUNTRYTime zones per country.