PHP didukung Zona waktu
Berikut adalah daftar lengkap dari zona waktu yang didukung oleh PHP, yang berguna dengan beberapa fungsi tanggal PHP.
| Afrika / Abidjan | Afrika / Accra | Afrika / Addis_Ababa | Afrika / Algiers | Afrika / Asmara |
| Afrika / Asmera | Afrika / Bamako | Afrika / Bangui | Afrika / Banjul | Afrika / Bissau |
| Afrika / Blantyre | Afrika / Brazzaville | Afrika / Bujumbura | Afrika / Kairo | Afrika / Casablanca |
| Afrika / Ceuta | Afrika / Conakry | Afrika / Dakar | Afrika / Dar_es_Salaam | Afrika / Djibouti |
| Afrika / Douala | Afrika / El_Aaiun | Afrika / Freetown | Afrika / Gaborone | Afrika / Harare |
| Afrika / Johannesburg | Afrika / Juba | Afrika / Kampala | Afrika / Khartoum | Afrika / Kigali |
| Afrika / Kinshasa | Afrika / Lagos | Afrika / Libreville | Afrika / Lome | Afrika / Luanda |
| Afrika / Lubumbashi | Afrika / Lusaka | Afrika / Malabo | Afrika / Maputo | Afrika / Maseru |
| Afrika / Mbabane | Afrika / Mogadishu | Afrika / Monrovia | Afrika / Nairobi | Afrika / Ndjamena |
| Afrika / Niamey | Afrika / Nouakchott | Afrika / Ouagadougou | Afrika / Porto-Novo | Afrika / Sao_Tome |
| Afrika / Timbuktu | Afrika / Tripoli | Afrika / Tunis | Afrika / Windhoek | |
| America / Adak | America / Anchorage | America / Anguilla |
| America / Antigua | America / Araguaina | Amerika / Argentina / Buenos_Aires |
| Amerika / Argentina / Catamarca | Amerika / Argentina / ComodRivadavia | Amerika / Argentina / Cordoba |
| Amerika / Argentina / Jujuy | Amerika / Argentina / La_Rioja | Amerika / Argentina / Mendoza |
| Amerika / Argentina / Rio_Gallegos | Amerika / Argentina / Salta | Amerika / Argentina / San_Juan |
| Amerika / Argentina / San_Luis | Amerika / Argentina / Tucuman | Amerika / Argentina / Ushuaia |
| America / Aruba | America / Asuncion | America / Atikokan |
| America / Atka | America / Bahia | America / Bahia_banderas |
| Amerika / Barbados | America / Belem | Amerika / Belize |
| Amerika / Blanc-Sablon | America / Boa Vista | Amerika / Bogota |
| America / Boise | America / Buenos_Aires | America / Cambridge_Bay |
| America / Campo Grande | America / Cancun | Amerika / Caracas |
| America / Catamarca | Amerika / Cayenne | America / Cayman |
| Amerika / Chicago | America / Chihuahua | America / Coral_Harbour |
| America / Cordoba | America / Costa_Rica | America / Creston |
| America / Cuiaba | America / Curaçao | America / Danmarkshavn |
| America / Dawson | America / Dawson_Creek | America / Denver |
| Amerika / Detroit | America / Dominica | America / Edmonton |
| America / Eirunepe | America / El_Salvador | America / Ensenada |
| America / Fort_Wayne | America / Fortaleza | America / Glace_Bay |
| America / Godthab | America / Goose_Bay | America / Grand_Turk |
| Amerika / Grenada | America / Guadeloupe | America / Guatemala |
| America / Guayaquil | America / Guyana | America / Halifax |
| Amerika / Havana | America / Hermosillo | Amerika / Indiana / Indianapolis |
| Amerika / Indiana / Knox | Amerika / Indiana / Marengo | Amerika / Indiana / Petersburg |
| Amerika / Indiana / Tell_City | Amerika / Indiana / Vevay | Amerika / Indiana / Vincennes |
| Amerika / Indiana / Winamac | America / Indianapolis | America / Inuvik |
| America / Iqaluit | Amerika / Jamaica | America / Jujuy |
| Amerika / Juneau | Amerika / Kentucky / Louisville | Amerika / Kentucky / Monticello |
| America / Knox_IN | America / Kralendijk | America / La_Paz |
| America / Lima | America / Los_Angeles | America / Louisville |
| America / Lower_Princes | America / Maceio | America / Managua |
| Amerika / Manaus | America / Marigot | Amerika / Martinique |
| America / Matamoros | America / Mazatlan | America / Mendoza |
| America / Menominee | America / Merida | America / Metlakatla |
| America / Mexico_City | America / Miquelon | America / Moncton |
| America / Monterrey | America / Montevideo | America / Montreal |
| America / Montserrat | America / Nassau | America / New_York |
| America / Nipigon | America / Nome | America / Noronha |
| Amerika / North_Dakota / Beulah | Amerika / North_Dakota / Pusat | Amerika / North_Dakota / New_Salem |
| America / Ojinaga | Amerika / Panama | America / Pangnirtung |
| America / Paramaribo | America / Phoenix | Amerika / Port-au-Prince |
| America / Port_of_Spain | America / Porto_Acre | America / Porto_Velho |
| America / Puerto_Rico | America / Rainy_River | America / Rankin_Inlet |
| America / Recife | America / Regina | America / Tegas |
| America / Rio_Branco | America / Rosario | America / Santa_Isabel |
| America / Santarem | America / Santiago | America / Santo_Domingo |
| America / Sao_Paulo | America / Scoresbysund | America / Shiprock |
| America / Sitka | America / St_Barthelemy | America / St_Johns |
| America / St_Kitts | America / St_Lucia | America / St_Thomas |
| America / St_Vincent | America / Swift_Current | America / Tegucigalpa |
| Amerika / Thule | America / Thunder_Bay | America / Tijuana |
| America / Toronto | America / Tortola | America / Vancouver |
| America / Virgin | America / Whitehorse | America / Winnipeg |
| America / Yakutat | America / Yellowknife | |
| Antartika / Casey | Antartika / Davis | Antartika / DumontDUrville | Antartika / Macquarie | Antartika / Mawson |
| Antartika / McMurdo | Antartika / Palmer | Antartika / Rothera | Antartika / South_Pole | Antartika / Syowa |
| Antartika / Vostok | | | | |
| Asia / Aden | Asia / Almaty | Asia / Amman | Asia / Anadyr | Asia / Aqtau |
| Asia / Aqtobe | Asia / Ashgabat | Asia / Ashkhabad | Asia / Baghdad | Asia / Bahrain |
| Asia / Baku | Asia / Bangkok | Asia / Beirut | Asia / Bishkek | Asia / Brunei |
| Asia / Calcutta | Asia / Choibalsan | Asia / Chongqing | Asia / Chungking | Asia / Colombo |
| Asia / Dacca | Asia / Damaskus | Asia / Dhaka | Asia / Dili | Asia / Dubai |
| Asia / Dushanbe | Asia / Gaza | Asia / Harbin | Asia / Hebron | Asia / Ho_Chi_Minh |
| Asia / Hong_Kong | Asia / Hovd | Asia / Irkutsk | Asia / Istanbul | Asia / Jakarta |
| Asia / Jayapura | Asia / Yerusalem | Asia / Kabul | Asia / Kamchatka | Asia / Karachi |
| Asia / Kashgar | Asia / Kathmandu | Asia / Katmandu | Asia / Khandyga | Asia / Kolkata |
| Asia / Krasnoyarsk | Asia / Kuala_Lumpur | Asia / Kuching | Asia / Kuwait | Asia / Makao |
| Asia / Macau | Asia / Magadan | Asia / Makassar | Asia / Manila | Asia / Muscat |
| Asia / Nicosia | Asia / Novokuznetsk | Asia / Novosibirsk | Asia / Omsk | Asia / Oral |
| Asia / Phnom_Penh | Asia / Pontianak | Asia / Pyongyang | Asia / Qatar | Asia / Qyzylorda |
| Asia / Rangoon | Asia / Riyadh | Asia / Saigon | Asia / Sakhalin | Asia / Samarkand |
| Asia / Seoul | Asia / Shanghai | Asia / Singapura | Asia / Taipei | Asia / Tashkent |
| Asia / Tbilisi | Asia / Teheran | Asia / Tel_Aviv | Asia / Thimbu | Asia / Thimphu |
| Asia / Tokyo | Asia / Ujung_Pandang | Asia / Ulaanbaatar | Asia / Ulan_Bator | Asia / Urumqi |
| Asia / Ust-Nera | Asia / Vientiane | Asia / Vladivostok | Asia / Yakutsk | Asia / Yekaterinburg |
| Asia / Yerevan | | | | |
| Atlantic / Azores | Atlantic / Bermuda | Atlantic / Canary | Atlantic / Cape_Verde | Atlantic / Faeroe |
| Atlantic / Faroe | Atlantic / Jan_Mayen | Atlantic / Madeira | Atlantic / Reykjavik | Atlantic / South_Georgia |
| Atlantic / St_Helena | Atlantic / Stanley | | | |
| Australia / ACT | Australia / Adelaide | Australia / Brisbane | Australia / Broken_Hill | Australia / Canberra |
| Australia / Currie | Australia / Darwin | Australia / Eucla | Australia / Hobart | Australia / LHI |
| Australia / Lindeman | Australia / Lord_Howe | Australia / Melbourne | Australia / Utara | Australia / NSW |
| Australia / Perth | Australia / Queensland | Australia / South | Australia / Sydney | Australia / Tasmania |
| Australia / Victoria | Australia / Barat | Australia / Yancowinna | | |
| Eropa / Amsterdam | Eropa / Andorra | Eropa / Athena | Eropa / Belfast | Eropa / Belgrade |
| Europe / Berlin | Eropa / Bratislava | Eropa / Brussels | Eropa / Bucharest | Eropa / Budapest |
| Eropa / Busingen | Eropa / Chisinau | Eropa / Copenhagen | Eropa / Dublin | Eropa / Gibraltar |
| Eropa / Guernsey | Eropa / Helsinki | Eropa / Isle_of_Man | Eropa / Istanbul | Eropa / Jersey |
| Eropa / Kaliningrad | Eropa / Kiev | Eropa / Lisbon | Eropa / Ljubljana | Eropa / London |
| Eropa / Luksemburg | Eropa / Madrid | Eropa / Malta | Eropa / Mariehamn | Eropa / Minsk |
| Eropa / Monako | Eropa / Moskow | Eropa / Nicosia | Eropa / Oslo | Eropa / Paris |
| Eropa / Podgorica | Eropa / Praha | Eropa / Riga | Europe / Rome | Eropa / Samara |
| Eropa / San_Marino | Eropa / Sarajevo | Eropa / Simferopol | Eropa / Skopje | Eropa / Sofia |
| Eropa / Stockholm | Eropa / Tallinn | Eropa / Tirane | Eropa / Tiraspol | Eropa / Uzhgorod |
| Eropa / Vaduz | Eropa / Vatikan | Eropa / Wina | Eropa / Vilnius | Eropa / Volgograd |
| Eropa / Warsawa | Eropa / Zagreb | Eropa / Zaporozhye | Eropa / Zurich | |
| India / Antananarivo | India / Chagos | India / Natal | India / Cocos | India / Comoro |
| India / Kerguelen | India / Mahe | India / Maldives | India / Mauritius | India / Mayotte |
| India / Reunion | | | | |
| Pacific / Apia | Pacific / Auckland | Pacific / Chatham | Pacific / Chuuk | Pacific / Paskah |
| Pacific / Efate | Pacific / Enderbury | Pacific / Fakaofo | Pacific / Fiji | Pacific / Funafuti |
| Pacific / Galapagos | Pacific / Gambier | Pacific / Guadalcanal | Pacific / Guam | Pacific / Honolulu |
| Pacific / Johnston | Pacific / Kiritimati | Pacific / Kosrae | Pacific / Kwajalein | Pacific / Majuro |
| Pacific / Marquesas | Pacific / Midway | Pacific / Nauru | Pacific / Niue | Pacific / Norfolk |
| Pacific / Noumea | Pacific / Pago_Pago | Pacific / Palau | Pacific / Pitcairn | Pacific / Pohnpei |
| Pacific / Ponape | Pacific / Port_Moresby | Pacific / Rarotonga | Pacific / Saipan | Pacific / Samoa |
| Pacific / Tahiti | Pacific / Tarawa | Pacific / Tongatapu | Pacific / Truk | Pacific / Wake |
| Pacific / Wallis | Pacific / Yap | | | |