PHP 输出各个时区对应的时差表

在项目中需要用户到各个时区：（Asia/Shanghai），一时不知道怎么直接快速的定位国家所对应的时区，

$timezone_identifiers = DateTimeZone::listIdentifiers();for ($i=0; $i < count($timezone_identifiers); $i++) {$timeZone = $timezone_identifiers[$i];$dateTimeZone = new DateTimeZone($timeZone);$dateTime = new DateTime('now', $dateTimeZone);// $timeOffset = $dateTimeZone->getOffset($dateTime);$timeOffset = timezone_offset_get(new DateTimeZone( $timeZone), new DateTime());$timeOffsetStr = output_offset($timeOffset);echo "$timeZone\t$timeOffsetStr\n";}function output_offset($offset) {$pre = $offset < 0 ? '-' : '+';if ($offset < 0) $offset = -$offset;$hour = (int)($offset / 3600);$minute = (int)($offset / 60) % 60;return $pre . sprintf('%02d:%02d', $hour, $minute);}

打印

Africa/Abidjan+00:00Africa/Accra+00:00Africa/Addis_Ababa+03:00Africa/Algiers+01:00Africa/Asmara+03:00Africa/Bamako+00:00Africa/Bangui+01:00Africa/Banjul+00:00Africa/Bissau+00:00Africa/Blantyre+02:00Africa/Brazzaville+01:00Africa/Bujumbura+02:00Africa/Cairo+02:00Africa/Casablanca+01:00Africa/Ceuta+02:00Africa/Conakry+00:00Africa/Dakar+00:00Africa/Dar_es_Salaam+03:00Africa/Djibouti+03:00Africa/Douala+01:00Africa/El_Aaiun+01:00Africa/Freetown+00:00Africa/Gaborone+02:00Africa/Harare+02:00Africa/Johannesburg+02:00Africa/Juba+03:00Africa/Kampala+03:00Africa/Khartoum+02:00Africa/Kigali+02:00Africa/Kinshasa+01:00Africa/Lagos+01:00Africa/Libreville+01:00Africa/Lome+00:00Africa/Luanda+01:00Africa/Lubumbashi+02:00Africa/Lusaka+02:00Africa/Malabo+01:00Africa/Maputo+02:00Africa/Maseru+02:00Africa/Mbabane+02:00Africa/Mogadishu+03:00Africa/Monrovia+00:00Africa/Nairobi+03:00Africa/Ndjamena+01:00Africa/Niamey+01:00Africa/Nouakchott+00:00Africa/Ouagadougou+00:00Africa/Porto-Novo+01:00Africa/Sao_Tome+00:00Africa/Tripoli+02:00Africa/Tunis+01:00Africa/Windhoek+02:00America/Adak-09:00America/Anchorage-08:00America/Anguilla-04:00America/Antigua-04:00America/Araguaina-03:00America/Argentina/Buenos_Aires-03:00America/Argentina/Catamarca-03:00America/Argentina/Cordoba-03:00America/Argentina/Jujuy-03:00America/Argentina/La_Rioja-03:00America/Argentina/Mendoza-03:00America/Argentina/Rio_Gallegos-03:00America/Argentina/Salta-03:00America/Argentina/San_Juan-03:00America/Argentina/San_Luis-03:00America/Argentina/Tucuman-03:00America/Argentina/Ushuaia-03:00America/Aruba-04:00America/Asuncion-04:00America/Atikokan-05:00America/Bahia-03:00America/Bahia_Banderas-05:00America/Barbados-04:00America/Belem-03:00America/Belize-06:00America/Blanc-Sablon-04:00America/Boa_Vista-04:00America/Bogota-05:00America/Boise-06:00America/Cambridge_Bay-06:00America/Campo_Grande-04:00America/Cancun-05:00America/Caracas-04:00America/Cayenne-03:00America/Cayman-05:00America/Chicago-05:00America/Chihuahua-06:00America/Costa_Rica-06:00America/Creston-07:00America/Cuiaba-04:00America/Curacao-04:00America/Danmarkshavn+00:00America/Dawson-07:00America/Dawson_Creek-07:00America/Denver-06:00America/Detroit-04:00America/Dominica-04:00America/Edmonton-06:00America/Eirunepe-05:00America/El_Salvador-06:00America/Fort_Nelson-07:00America/Fortaleza-03:00America/Glace_Bay-03:00America/Goose_Bay-03:00America/Grand_Turk-04:00America/Grenada-04:00America/Guadeloupe-04:00America/Guatemala-06:00America/Guayaquil-05:00America/Guyana-04:00America/Halifax-03:00America/Havana-04:00America/Hermosillo-07:00America/Indiana/Indianapolis-04:00America/Indiana/Knox-05:00America/Indiana/Marengo-04:00America/Indiana/Petersburg-04:00America/Indiana/Tell_City-05:00America/Indiana/Vevay-04:00America/Indiana/Vincennes-04:00America/Indiana/Winamac-04:00America/Inuvik-06:00America/Iqaluit-04:00America/Jamaica-05:00America/Juneau-08:00America/Kentucky/Louisville-04:00America/Kentucky/Monticello-04:00America/Kralendijk-04:00America/La_Paz-04:00America/Lima-05:00America/Los_Angeles-07:00America/Lower_Princes-04:00America/Maceio-03:00America/Managua-06:00America/Manaus-04:00America/Marigot-04:00America/Martinique-04:00America/Matamoros-05:00America/Mazatlan-06:00America/Menominee-05:00America/Merida-05:00America/Metlakatla-08:00America/Mexico_City-05:00America/Miquelon-02:00America/Moncton-03:00America/Monterrey-05:00America/Montevideo-03:00America/Montserrat-04:00America/Nassau-04:00America/New_York-04:00America/Nipigon-04:00America/Nome-08:00America/Noronha-02:00America/North_Dakota/Beulah-05:00America/North_Dakota/Center-05:00America/North_Dakota/New_Salem-05:00America/Nuuk-02:00America/Ojinaga-06:00America/Panama-05:00America/Pangnirtung-04:00America/Paramaribo-03:00America/Phoenix-07:00America/Port-au-Prince-04:00America/Port_of_Spain-04:00America/Porto_Velho-04:00America/Puerto_Rico-04:00America/Punta_Arenas-03:00America/Rainy_River-05:00America/Rankin_Inlet-05:00America/Recife-03:00America/Regina-06:00America/Resolute-05:00America/Rio_Branco-05:00America/Santarem-03:00America/Santiago-04:00America/Santo_Domingo-04:00America/Sao_Paulo-03:00America/Scoresbysund+00:00America/Sitka-08:00America/St_Barthelemy-04:00America/St_Johns-02:30America/St_Kitts-04:00America/St_Lucia-04:00America/St_Thomas-04:00America/St_Vincent-04:00America/Swift_Current-06:00America/Tegucigalpa-06:00America/Thule-03:00America/Thunder_Bay-04:00America/Tijuana-07:00America/Toronto-04:00America/Tortola-04:00America/Vancouver-07:00America/Whitehorse-07:00America/Winnipeg-05:00America/Yakutat-08:00America/Yellowknife-06:00Antarctica/Casey+08:00Antarctica/Davis+07:00Antarctica/DumontDUrville+10:00Antarctica/Macquarie+11:00Antarctica/Mawson+05:00Antarctica/McMurdo+12:00Antarctica/Palmer-03:00Antarctica/Rothera-03:00Antarctica/Syowa+03:00Antarctica/Troll+02:00Antarctica/Vostok+06:00Arctic/Longyearbyen+02:00Asia/Aden+03:00Asia/Almaty+06:00Asia/Amman+03:00Asia/Anadyr+12:00Asia/Aqtau+05:00Asia/Aqtobe+05:00Asia/Ashgabat+05:00Asia/Atyrau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