php输出全球各个时区列表的方法

<?php
$timezones =
array (
 (GMT-12:00) International Date Line West => Pacific/Wake,
 (GMT-11:00) Midway Island => Pacific/Apia,
 (GMT-11:00) Samoa => Pacific/Apia,
 (GMT-10:00) Hawaii => Pacific/Honolulu,
 (GMT-09:00) Alaska => America/Anchorage,
 (GMT-08:00) Pacific Time (US & Canada); Tijuana => America/Los_Angeles,
 (GMT-07:00) Arizona => America/Phoenix,
 (GMT-07:00) Chihuahua => America/Chihuahua,
 (GMT-07:00) La Paz => America/Chihuahua,
 (GMT-07:00) Mazatlan => America/Chihuahua,
 (GMT-07:00) Mountain Time (US & Canada) => America/Denver,
 (GMT-06:00) Central America => America/Managua,
 (GMT-06:00) Central Time (US & Canada) => America/Chicago,
 (GMT-06:00) Guadalajara => America/Mexico_City,
 (GMT-06:00) Mexico City => America/Mexico_City,
 (GMT-06:00) Monterrey => America/Mexico_City,
 (GMT-06:00) Saskatchewan => America/Regina,
 (GMT-05:00) Bogota => America/Bogota,
 (GMT-05:00) Eastern Time (US & Canada) => America/New_York,
 (GMT-05:00) Indiana (East) => America/Indiana/Indianapolis,
 (GMT-05:00) Lima => America/Bogota,
 (GMT-05:00) Quito => America/Bogota,
 (GMT-04:00) Atlantic Time (Canada) => America/Halifax,
 (GMT-04:00) Caracas => America/Caracas,
 (GMT-04:00) La Paz => America/Caracas,
 (GMT-04:00) Santiago => America/Santiago,
 (GMT-03:30) Newfoundland => America/St_Johns,
 (GMT-03:00) Brasilia => America/Sao_Paulo,
 (GMT-03:00) Buenos Aires => America/Argentina/Buenos_Aires,
 (GMT-03:00) Georgetown => America/Argentina/Buenos_Aires,
 (GMT-03:00) Greenland => America/Godthab,
 (GMT-02:00) Mid-Atlantic => America/Noronha,
 (GMT-01:00) Azores => Atlantic/Azores,
 (GMT-01:00) Cape Verde Is. => Atlantic/Cape_Verde,
 (GMT) Casablanca => Africa/Casablanca,
 (GMT) Edinburgh => Europe/London,
 (GMT) Greenwich Mean Time : Dublin => Europe/London,
 (GMT) Lisbon => Europe/London,
 (GMT) London => Europe/London,
 (GMT) Monrovia => Africa/Casablanca,
 (GMT+01:00) Amsterdam => Europe/Berlin,
 (GMT+01:00) Belgrade => Europe/Belgrade,
 (GMT+01:00) Berlin => Europe/Berlin,
 (GMT+01:00) Bern => Europe/Berlin,
 (GMT+01:00) Bratislava => Europe/Belgrade,
 (GMT+01:00) Brussels => Europe/Paris,
 (GMT+01:00) Budapest => Europe/Belgrade,
 (GMT+01:00) Copenhagen => Europe/Paris,
 (GMT+01:00) Ljubljana => Europe/Belgrade,
 (GMT+01:00) Madrid => Europe/Paris,
 (GMT+01:00) Paris => Europe/Paris,
 (GMT+01:00) Prague => Europe/Belgrade,
 (GMT+01:00) Rome => Europe/Berlin,
 (GMT+01:00) Sarajevo => Europe/Sarajevo,
 (GMT+01:00) Skopje => Europe/Sarajevo,
 (GMT+01:00) Stockholm => Europe/Berlin,
 (GMT+01:00) Vienna => Europe/Berlin,
 (GMT+01:00) Warsaw => Europe/Sarajevo,
 (GMT+01:00) West Central Africa => Africa/Lagos,
 (GMT+01:00) Zagreb => Europe/Sarajevo,
 (GMT+02:00) Athens => Europe/Istanbul,
 (GMT+02:00) Bucharest => Europe/Bucharest,
 (GMT+02:00) Cairo => Africa/Cairo,
 (GMT+02:00) Harare => Africa/Johannesburg,
 (GMT+02:00) Helsinki => Europe/Helsinki,
 (GMT+02:00) Istanbul => Europe/Istanbul,
 (GMT+02:00) Jerusalem => Asia/Jerusalem,
 (GMT+02:00) Kyiv => Europe/Helsinki,
 (GMT+02:00) Minsk => Europe/Istanbul,
 (GMT+02:00) Pretoria => Africa/Johannesburg,
 (GMT+02:00) Riga => Europe/Helsinki,
 (GMT+02:00) Sofia => Europe/Helsinki,
 (GMT+02:00) Tallinn => Europe/Helsinki,
 (GMT+02:00) Vilnius => Europe/Helsinki,
 (GMT+03:00) Baghdad => Asia/Baghdad,
 (GMT+03:00) Kuwait => Asia/Riyadh,
 (GMT+03:00) Moscow => Europe/Moscow,
 (GMT+03:00) Nairobi => Africa/Nairobi,
 (GMT+03:00) Riyadh => Asia/Riyadh,
 (GMT+03:00) St. Petersburg => Europe/Moscow,
 (GMT+03:00) Volgograd => Europe/Moscow,
 (GMT+03:30) Tehran => Asia/Tehran,
 (GMT+04:00) Abu Dhabi => Asia/Muscat,
 (GMT+04:00) Baku => Asia/Tbilisi,
 (GMT+04:00) Muscat => Asia/Muscat,
 (GMT+04:00) Tbilisi => Asia/Tbilisi,
 (GMT+04:00) Yerevan => Asia/Tbilisi,
 (GMT+04:30) Kabul => Asia/Kabul,
 (GMT+05:00) Ekaterinburg => Asia/Yekaterinburg,
 (GMT+05:00) Islamabad => Asia/Karachi,
 (GMT+05:00) Karachi => Asia/Karachi,
 (GMT+05:00) Tashkent => Asia/Karachi,
 (GMT+05:30) Chennai => Asia/Calcutta,
 (GMT+05:30) Kolkata => Asia/Calcutta,
 (GMT+05:30) Mumbai => Asia/Calcutta,
 (GMT+05:30) New Delhi => Asia/Calcutta,
 (GMT+05:45) Kathmandu => Asia/Katmandu,
 (GMT+06:00) Almaty => Asia/Novosibirsk,
 (GMT+06:00) Astana => Asia/Dhaka,
 (GMT+06:00) Dhaka => Asia/Dhaka,
 (GMT+06:00) Novosibirsk => Asia/Novosibirsk,
 (GMT+06:00) Sri Jayawardenepura => Asia/Colombo,
 (GMT+06:30) Rangoon => Asia/Rangoon,
 (GMT+07:00) Bangkok => Asia/Bangkok,
 (GMT+07:00) Hanoi => Asia/Bangkok,
 (GMT+07:00) Jakarta => Asia/Bangkok,
 (GMT+07:00) Krasnoyarsk => Asia/Krasnoyarsk,
 (GMT+08:00) Beijing => Asia/Hong_Kong,
 (GMT+08:00) Chongqing => Asia/Hong_Kong,
 (GMT+08:00) Hong Kong => Asia/Hong_Kong,
 (GMT+08:00) Irkutsk => Asia/Irkutsk,
 (GMT+08:00) Kuala Lumpur => Asia/Singapore,
 (GMT+08:00) Perth => Australia/Perth,
 (GMT+08:00) Singapore => Asia/Singapore,
 (GMT+08:00) Taipei => Asia/Taipei,
 (GMT+08:00) Ulaan Bataar => Asia/Irkutsk,
 (GMT+08:00) Urumqi => Asia/Hong_Kong,
 (GMT+09:00) Osaka => Asia/Tokyo,
 (GMT+09:00) Sapporo => Asia/Tokyo,
 (GMT+09:00) Seoul => Asia/Seoul,
 (GMT+09:00) Tokyo => Asia/Tokyo,
 (GMT+09:00) Yakutsk => Asia/Yakutsk,
 (GMT+09:30) Adelaide => Australia/Adelaide,
 (GMT+09:30) Darwin => Australia/Darwin,
 (GMT+10:00) Brisbane => Australia/Brisbane,
 (GMT+10:00) Canberra => Australia/Sydney,
 (GMT+10:00) Guam => Pacific/Guam,
 (GMT+10:00) Hobart => Australia/Hobart,
 (GMT+10:00) Melbourne => Australia/Sydney,
 (GMT+10:00) Port Moresby => Pacific/Guam,
 (GMT+10:00) Sydney => Australia/Sydney,
 (GMT+10:00) Vladivostok => Asia/Vladivostok,
 (GMT+11:00) Magadan => Asia/Magadan,
 (GMT+11:00) New Caledonia => Asia/Magadan,
 (GMT+11:00) Solomon Is. => Asia/Magadan,
 (GMT+12:00) Auckland => Pacific/Auckland,
 (GMT+12:00) Fiji => Pacific/Fiji,
 (GMT+12:00) Kamchatka => Pacific/Fiji,
 (GMT+12:00) Marshall Is. => Pacific/Fiji,
 (GMT+12:00) Wellington => Pacific/Auckland,
 (GMT+13:00) Nuku\alofa => Pacific/Tongatapu,
);
print_r($timezones);
?>