Is your XAMPP PHP date() function time different from local machine time? Follow this quick tutorial to change the default timezone in XAMPP.
Step 1: Navigate to C:\xampp\php\php.ini or your path, open it in notepad or any text editor. This path might be different if you have installed XAMPP at a different location.
Step 2: Look for the following line
date.timezone = "Australia/Melbourne"
Step 3: Change “Australia/Melbourne” to the proper value.
Step 4: Restart your XAMPP
Here is a list of timezones that PHP supports:
Africa
| Africa/Abidjan | Africa/Accra | Africa/Addis_Ababa |
| Africa/Algiers | Africa/Asmara | Africa/Asmera |
| Africa/Bamako | Africa/Bangui | Africa/Banjul |
| Africa/Bissau | Africa/Blantyre | Africa/Brazzaville |
| Africa/Bujumbura | Africa/Cairo | Africa/Casablanca |
| Africa/Ceuta | Africa/Conakry | Africa/Dakar |
| Africa/Dar_es_Salaam | Africa/Djibouti | Africa/Douala |
| Africa/El_Aaiun | Africa/Freetown | Africa/Gaborone |
| Africa/Harare | Africa/Johannesburg | Africa/Juba |
| Africa/Kampala | Africa/Khartoum | Africa/Kigali |
| Africa/Kinshasa | Africa/Lagos | Africa/Libreville |
| Africa/Lome | Africa/Luanda | Africa/Lubumbashi |
| Africa/Lusaka | Africa/Malabo | Africa/Maputo |
| Africa/Maseru | Africa/Mbabane | Africa/Mogadishu |
| Africa/Monrovia | Africa/Nairobi | Africa/Ndjamena |
| Africa/Niamey | Africa/Nouakchott | Africa/Ouagadougou |
| Africa/Porto-Novo | Africa/Sao_Tome | Africa/Timbuktu |
| Africa/Tripoli | Africa/Tunis | Africa/Windhoek |
America
| America/Adak | America/Anchorage | America/Anguilla |
| America/Antigua | America/Araguaina | America/Argentina/Buenos_Aires |
| America/Argentina/Catamarca | America/Argentina/ComodRivadavia | America/Argentina/Cordoba |
| America/Argentina/Jujuy | America/Argentina/La_Rioja | America/Argentina/Mendoza |
| America/Argentina/Rio_Gallegos | America/Argentina/Salta | America/Argentina/San_Juan |
| America/Argentina/San_Luis | America/Argentina/Tucuman | America/Argentina/Ushuaia |
| America/Aruba | America/Asuncion | America/Atikokan |
| America/Atka | America/Bahia | America/Bahia_Banderas |
| America/Barbados | America/Belem | America/Belize |
| America/Blanc-Sablon | America/Boa_Vista | America/Bogota |
| America/Boise | America/Buenos_Aires | America/Cambridge_Bay |
| America/Campo_Grande | America/Cancun | America/Caracas |
| America/Catamarca | America/Cayenne | America/Cayman |
| America/Chicago | America/Chihuahua | America/Coral_Harbour |
| America/Cordoba | America/Costa_Rica | America/Creston |
| America/Cuiaba | America/Curacao | America/Danmarkshavn |
| America/Dawson | America/Dawson_Creek | America/Denver |
| America/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 |
| America/Grenada | America/Guadeloupe | America/Guatemala |
| America/Guayaquil | America/Guyana | America/Halifax |
| America/Havana | America/Hermosillo | America/Indiana/Indianapolis |
| America/Indiana/Knox | America/Indiana/Marengo | America/Indiana/Petersburg |
| America/Indiana/Tell_City | America/Indiana/Vevay | America/Indiana/Vincennes |
| America/Indiana/Winamac | America/Indianapolis | America/Inuvik |
| America/Iqaluit | America/Jamaica | America/Jujuy |
| America/Juneau | America/Kentucky/Louisville | America/Kentucky/Monticello |
| America/Knox_IN | America/Kralendijk | America/La_Paz |
| America/Lima | America/Los_Angeles | America/Louisville |
| America/Lower_Princes | America/Maceio | America/Managua |
| America/Manaus | America/Marigot | America/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 |
| America/North_Dakota/Beulah | America/North_Dakota/Center | America/North_Dakota/New_Salem |
| America/Ojinaga | America/Panama | America/Pangnirtung |
| America/Paramaribo | America/Phoenix | America/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/Resolute |
| 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 |
| America/Thule | America/Thunder_Bay | America/Tijuana |
| America/Toronto | America/Tortola | America/Vancouver |
| America/Virgin | America/Whitehorse | America/Winnipeg |
| America/Yakutat | America/Yellowknife |
Antarctica
| Antarctica/Casey | Antarctica/Davis | Antarctica/DumontDUrville |
| Antarctica/Macquarie | Antarctica/Mawson | Antarctica/McMurdo |
| Antarctica/Palmer | Antarctica/Rothera | Antarctica/South_Pole |
| Antarctica/Syowa | Antarctica/Vostok |
Arctic
| Arctic/Longyearbyen |
Asia
| 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/Damascus | 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/Jerusalem | 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/Macao | 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/Singapore | Asia/Taipei | Asia/Tashkent |
| Asia/Tbilisi | Asia/Tehran | 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
| 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
| 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/North | Australia/NSW |
| Australia/Perth | Australia/Queensland | Australia/South |
| Australia/Sydney | Australia/Tasmania | Australia/Victoria |
| Australia/West | Australia/Yancowinna |
Europe
| Europe/Amsterdam | Europe/Andorra | Europe/Athens |
| Europe/Belfast | Europe/Belgrade | Europe/Berlin |
| Europe/Bratislava | Europe/Brussels | Europe/Bucharest |
| Europe/Budapest | Europe/Busingen | Europe/Chisinau |
| Europe/Copenhagen | Europe/Dublin | Europe/Gibraltar |
| Europe/Guernsey | Europe/Helsinki | Europe/Isle_of_Man |
| Europe/Istanbul | Europe/Jersey | Europe/Kaliningrad |
| Europe/Kiev | Europe/Lisbon | Europe/Ljubljana |
| Europe/London | Europe/Luxembourg | Europe/Madrid |
| Europe/Malta | Europe/Mariehamn | Europe/Minsk |
| Europe/Monaco | Europe/Moscow | Europe/Nicosia |
| Europe/Oslo | Europe/Paris | Europe/Podgorica |
| Europe/Prague | Europe/Riga | Europe/Rome |
| Europe/Samara | Europe/San_Marino | Europe/Sarajevo |
| Europe/Simferopol | Europe/Skopje | Europe/Sofia |
| Europe/Stockholm | Europe/Tallinn | Europe/Tirane |
| Europe/Tiraspol | Europe/Uzhgorod | Europe/Vaduz |
| Europe/Vatican | Europe/Vienna | Europe/Vilnius |
| Europe/Volgograd | Europe/Warsaw | Europe/Zagreb |
| Europe/Zaporozhye | Europe/Zurich |
Indian
| Indian/Antananarivo | Indian/Chagos | Indian/Christmas |
| Indian/Cocos | Indian/Comoro | Indian/Kerguelen |
| Indian/Mahe | Indian/Maldives | Indian/Mauritius |
| Indian/Mayotte | Indian/Reunion |
Pacific
| Pacific/Apia | Pacific/Auckland | Pacific/Chatham |
| Pacific/Chuuk | Pacific/Easter | 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 |
