用PHP生成时区的下拉列表

大多数网站需要某种方式在用户首选时区显示网站上的date。 下面是我find的 两个列表 ，然后是使用 PHP 5中内置的PHP DateTime类的一个方法。

我需要帮助，知道哪些是最好的尝试使用时，从登记用户获得UTC偏移量。

一：

<option value="-12">[UTC - 12] Baker Island Time</option> <option value="-11">[UTC - 11] Niue Time, Samoa Standard Time</option> <option value="-10">[UTC - 10] Hawaii-Aleutian Standard Time, Cook Island Time</option> <option value="-9.5">[UTC - 9:30] Marquesas Islands Time</option> <option value="-9">[UTC - 9] Alaska Standard Time, Gambier Island Time</option> <option value="-8">[UTC - 8] Pacific Standard Time</option> <option value="-7">[UTC - 7] Mountain Standard Time</option> <option value="-6">[UTC - 6] Central Standard Time</option> <option value="-5">[UTC - 5] Eastern Standard Time</option> <option value="-4.5">[UTC - 4:30] Venezuelan Standard Time</option> <option value="-4">[UTC - 4] Atlantic Standard Time</option> <option value="-3.5">[UTC - 3:30] Newfoundland Standard Time</option> <option value="-3">[UTC - 3] Amazon Standard Time, Central Greenland Time</option> <option value="-2">[UTC - 2] Fernando de Noronha Time, South Georgia &amp; the South Sandwich Islands Time</option> <option value="-1">[UTC - 1] Azores Standard Time, Cape Verde Time, Eastern Greenland Time</option> <option value="0" selected="selected">[UTC] Western European Time, Greenwich Mean Time</option> <option value="1">[UTC + 1] Central European Time, West African Time</option> <option value="2">[UTC + 2] Eastern European Time, Central African Time</option> <option value="3">[UTC + 3] Moscow Standard Time, Eastern African Time</option> <option value="3.5">[UTC + 3:30] Iran Standard Time</option> <option value="4">[UTC + 4] Gulf Standard Time, Samara Standard Time</option> <option value="4.5">[UTC + 4:30] Afghanistan Time</option> <option value="5">[UTC + 5] Pakistan Standard Time, Yekaterinburg Standard Time</option> <option value="5.5">[UTC + 5:30] Indian Standard Time, Sri Lanka Time</option> <option value="5.75">[UTC + 5:45] Nepal Time</option> <option value="6">[UTC + 6] Bangladesh Time, Bhutan Time, Novosibirsk Standard Time</option> <option value="6.5">[UTC + 6:30] Cocos Islands Time, Myanmar Time</option> <option value="7">[UTC + 7] Indochina Time, Krasnoyarsk Standard Time</option> <option value="8">[UTC + 8] Chinese Standard Time, Australian Western Standard Time, Irkutsk Standard Time</option> <option value="8.75">[UTC + 8:45] Southeastern Western Australia Standard Time</option> <option value="9">[UTC + 9] Japan Standard Time, Korea Standard Time, Chita Standard Time</option> <option value="9.5">[UTC + 9:30] Australian Central Standard Time</option> <option value="10">[UTC + 10] Australian Eastern Standard Time, Vladivostok Standard Time</option> <option value="10.5">[UTC + 10:30] Lord Howe Standard Time</option> <option value="11">[UTC + 11] Solomon Island Time, Magadan Standard Time</option> <option value="11.5">[UTC + 11:30] Norfolk Island Time</option> <option value="12">[UTC + 12] New Zealand Time, Fiji Time, Kamchatka Standard Time</option> <option value="12.75">[UTC + 12:45] Chatham Islands Time</option> <option value="13">[UTC + 13] Tonga Time, Phoenix Islands Time</option> <option value="14">[UTC + 14] Line Island Time</option> 

或者使用PHP友好值：

 <option value="Pacific/Midway">(GMT-11:00) Midway Island, Samoa</option> <option value="America/Adak">(GMT-10:00) Hawaii-Aleutian</option> <option value="Etc/GMT+10">(GMT-10:00) Hawaii</option> <option value="Pacific/Marquesas">(GMT-09:30) Marquesas Islands</option> <option value="Pacific/Gambier">(GMT-09:00) Gambier Islands</option> <option value="America/Anchorage">(GMT-09:00) Alaska</option> <option value="America/Ensenada">(GMT-08:00) Tijuana, Baja California</option> <option value="Etc/GMT+8">(GMT-08:00) Pitcairn Islands</option> <option value="America/Los_Angeles">(GMT-08:00) Pacific Time (US & Canada)</option> <option value="America/Denver">(GMT-07:00) Mountain Time (US & Canada)</option> <option value="America/Chihuahua">(GMT-07:00) Chihuahua, La Paz, Mazatlan</option> <option value="America/Dawson_Creek">(GMT-07:00) Arizona</option> <option value="America/Belize">(GMT-06:00) Saskatchewan, Central America</option> <option value="America/Cancun">(GMT-06:00) Guadalajara, Mexico City, Monterrey</option> <option value="Chile/EasterIsland">(GMT-06:00) Easter Island</option> <option value="America/Chicago">(GMT-06:00) Central Time (US & Canada)</option> <option value="America/New_York">(GMT-05:00) Eastern Time (US & Canada)</option> <option value="America/Havana">(GMT-05:00) Cuba</option> <option value="America/Bogota">(GMT-05:00) Bogota, Lima, Quito, Rio Branco</option> <option value="America/Caracas">(GMT-04:30) Caracas</option> <option value="America/Santiago">(GMT-04:00) Santiago</option> <option value="America/La_Paz">(GMT-04:00) La Paz</option> <option value="Atlantic/Stanley">(GMT-04:00) Faukland Islands</option> <option value="America/Campo_Grande">(GMT-04:00) Brazil</option> <option value="America/Goose_Bay">(GMT-04:00) Atlantic Time (Goose Bay)</option> <option value="America/Glace_Bay">(GMT-04:00) Atlantic Time (Canada)</option> <option value="America/St_Johns">(GMT-03:30) Newfoundland</option> <option value="America/Araguaina">(GMT-03:00) UTC-3</option> <option value="America/Montevideo">(GMT-03:00) Montevideo</option> <option value="America/Miquelon">(GMT-03:00) Miquelon, St. Pierre</option> <option value="America/Godthab">(GMT-03:00) Greenland</option> <option value="America/Argentina/Buenos_Aires">(GMT-03:00) Buenos Aires</option> <option value="America/Sao_Paulo">(GMT-03:00) Brasilia</option> <option value="America/Noronha">(GMT-02:00) Mid-Atlantic</option> <option value="Atlantic/Cape_Verde">(GMT-01:00) Cape Verde Is.</option> <option value="Atlantic/Azores">(GMT-01:00) Azores</option> <option value="Europe/Belfast">(GMT) Greenwich Mean Time : Belfast</option> <option value="Europe/Dublin">(GMT) Greenwich Mean Time : Dublin</option> <option value="Europe/Lisbon">(GMT) Greenwich Mean Time : Lisbon</option> <option value="Europe/London">(GMT) Greenwich Mean Time : London</option> <option value="Africa/Abidjan">(GMT) Monrovia, Reykjavik</option> <option value="Europe/Amsterdam">(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna</option> <option value="Europe/Belgrade">(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague</option> <option value="Europe/Brussels">(GMT+01:00) Brussels, Copenhagen, Madrid, Paris</option> <option value="Africa/Algiers">(GMT+01:00) West Central Africa</option> <option value="Africa/Windhoek">(GMT+01:00) Windhoek</option> <option value="Asia/Beirut">(GMT+02:00) Beirut</option> <option value="Africa/Cairo">(GMT+02:00) Cairo</option> <option value="Asia/Gaza">(GMT+02:00) Gaza</option> <option value="Africa/Blantyre">(GMT+02:00) Harare, Pretoria</option> <option value="Asia/Jerusalem">(GMT+02:00) Jerusalem</option> <option value="Europe/Minsk">(GMT+02:00) Minsk</option> <option value="Asia/Damascus">(GMT+02:00) Syria</option> <option value="Europe/Moscow">(GMT+03:00) Moscow, St. Petersburg, Volgograd</option> <option value="Africa/Addis_Ababa">(GMT+03:00) Nairobi</option> <option value="Asia/Tehran">(GMT+03:30) Tehran</option> <option value="Asia/Dubai">(GMT+04:00) Abu Dhabi, Muscat</option> <option value="Asia/Yerevan">(GMT+04:00) Yerevan</option> <option value="Asia/Kabul">(GMT+04:30) Kabul</option> <option value="Asia/Yekaterinburg">(GMT+05:00) Ekaterinburg</option> <option value="Asia/Tashkent">(GMT+05:00) Tashkent</option> <option value="Asia/Kolkata">(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi</option> <option value="Asia/Katmandu">(GMT+05:45) Kathmandu</option> <option value="Asia/Dhaka">(GMT+06:00) Astana, Dhaka</option> <option value="Asia/Novosibirsk">(GMT+06:00) Novosibirsk</option> <option value="Asia/Rangoon">(GMT+06:30) Yangon (Rangoon)</option> <option value="Asia/Bangkok">(GMT+07:00) Bangkok, Hanoi, Jakarta</option> <option value="Asia/Krasnoyarsk">(GMT+07:00) Krasnoyarsk</option> <option value="Asia/Hong_Kong">(GMT+08:00) Beijing, Chongqing, Hong Kong, Urumqi</option> <option value="Asia/Irkutsk">(GMT+08:00) Irkutsk, Ulaan Bataar</option> <option value="Australia/Perth">(GMT+08:00) Perth</option> <option value="Australia/Eucla">(GMT+08:45) Eucla</option> <option value="Asia/Tokyo">(GMT+09:00) Osaka, Sapporo, Tokyo</option> <option value="Asia/Seoul">(GMT+09:00) Seoul</option> <option value="Asia/Yakutsk">(GMT+09:00) Yakutsk</option> <option value="Australia/Adelaide">(GMT+09:30) Adelaide</option> <option value="Australia/Darwin">(GMT+09:30) Darwin</option> <option value="Australia/Brisbane">(GMT+10:00) Brisbane</option> <option value="Australia/Hobart">(GMT+10:00) Hobart</option> <option value="Asia/Vladivostok">(GMT+10:00) Vladivostok</option> <option value="Australia/Lord_Howe">(GMT+10:30) Lord Howe Island</option> <option value="Etc/GMT-11">(GMT+11:00) Solomon Is., New Caledonia</option> <option value="Asia/Magadan">(GMT+11:00) Magadan</option> <option value="Pacific/Norfolk">(GMT+11:30) Norfolk Island</option> <option value="Asia/Anadyr">(GMT+12:00) Anadyr, Kamchatka</option> <option value="Pacific/Auckland">(GMT+12:00) Auckland, Wellington</option> <option value="Etc/GMT-12">(GMT+12:00) Fiji, Kamchatka, Marshall Is.</option> <option value="Pacific/Chatham">(GMT+12:45) Chatham Islands</option> <option value="Pacific/Tongatapu">(GMT+13:00) Nuku'alofa</option> <option value="Pacific/Kiritimati">(GMT+14:00) Kiritimati</option> 

或者只是使用PHP本身：

 $timezones = DateTimeZone::listAbbreviations(); $cities = array(); foreach( $timezones as $key => $zones ) { foreach( $zones as $id => $zone ) { /** * Only get timezones explicitely not part of "Others". * @see http://www.php.net/manual/en/timezones.others.php */ if ( preg_match( '/^(America|Antartica|Arctic|Asia|Atlantic|Europe|Indian|Pacific)\//', $zone['timezone_id'] ) && $zone['timezone_id']) { $cities[$zone['timezone_id']][] = $key; } } } // For each city, have a comma separated list of all possible timezones for that city. foreach( $cities as $key => $value ) $cities[$key] = join( ', ', $value); // Only keep one city (the first and also most important) for each set of possibilities. $cities = array_unique( $cities ); // Sort by area/city name. ksort( $cities ); 

看起来最后一个将是最安全的，因为它会随着PHP版本的使用而增长。 当需要将时区与城市名称绑定时，您还可以翻转该arrays。

Answer 1

我会这样做在PHP中，除了我会避免preg_match 100有些时候，这样做，以生成您的列表。

 $tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL); 

此外，我会使用PHP的名称为“时区”，忘了GMT偏移，这将改变基于DST。 这样的phpbb代码只是这样的B / C他们仍然支持PHP4，不能依赖DateTime或DateTimeZone对象在那里。

Answer 2

以上user210179的例子，我已经写了下面的函数来生成一个所有的时区与他们的偏移列表：

 function generate_timezone_list() { static $regions = array( DateTimeZone::AFRICA, DateTimeZone::AMERICA, DateTimeZone::ANTARCTICA, DateTimeZone::ASIA, DateTimeZone::ATLANTIC, DateTimeZone::AUSTRALIA, DateTimeZone::EUROPE, DateTimeZone::INDIAN, DateTimeZone::PACIFIC, ); $timezones = array(); foreach( $regions as $region ) { $timezones = array_merge( $timezones, DateTimeZone::listIdentifiers( $region ) ); } $timezone_offsets = array(); foreach( $timezones as $timezone ) { $tz = new DateTimeZone($timezone); $timezone_offsets[$timezone] = $tz->getOffset(new DateTime); } // sort timezone by offset asort($timezone_offsets); $timezone_list = array(); foreach( $timezone_offsets as $timezone => $offset ) { $offset_prefix = $offset < 0 ? '-' : '+'; $offset_formatted = gmdate( 'H:i', abs($offset) ); $pretty_offset = "UTC${offset_prefix}${offset_formatted}"; $timezone_list[$timezone] = "(${pretty_offset}) $timezone"; } return $timezone_list; } 

这将生成一个数组，如下所示：

 [Pacific/Midway] => (UTC-11:00) Pacific/Midway [Pacific/Pago_Pago] => (UTC-11:00) Pacific/Pago_Pago [Pacific/Niue] => (UTC-11:00) Pacific/Niue [Pacific/Honolulu] => (UTC-10:00) Pacific/Honolulu [Pacific/Fakaofo] => (UTC-10:00) Pacific/Fakaofo … 

它目前按偏移sorting，但是可以通过执行ksort()而不是asort()来轻松地ksort()区名称sorting。

Answer 3

尽pipe现有的答案数量众多，但我仍然解决了这个问题。 我的实施的亲是：

• 时区列表是dynamic生成的，因此在时区可能更改（在PHP中）时会自动更新。
• 时区名称已经过优化。 例如，“America / St_Barthelemy”成为“美国圣巴泰勒米”。
• 时区按偏移量和名称sorting。 托兰德的答案只是对偏移进行sorting，导致同一偏移量内未分组的时区。
• 不会从DateTimeZone::listAbbreviations检索偏移信息，因为该方法还会返回历史时区信息 。 Favio的答案确实使用了这种方法，这会导致不正确的（历史）偏移量
• 时区的列表仅在第一次请求时生成（并且使用静态variables“caching”）。

以下是完整的代码：

 function timezone_list() { static $timezones = null; if ($timezones === null) { $timezones = []; $offsets = []; $now = new DateTime('now', new DateTimeZone('UTC')); foreach (DateTimeZone::listIdentifiers() as $timezone) { $now->setTimezone(new DateTimeZone($timezone)); $offsets[] = $offset = $now->getOffset(); $timezones[$timezone] = '(' . format_GMT_offset($offset) . ') ' . format_timezone_name($timezone); } array_multisort($offsets, $timezones); } return $timezones; } function format_GMT_offset($offset) { $hours = intval($offset / 3600); $minutes = abs(intval($offset % 3600 / 60)); return 'GMT' . ($offset ? sprintf('%+03d:%02d', $hours, $minutes) : ''); } function format_timezone_name($name) { $name = str_replace('/', ', ', $name); $name = str_replace('_', ' ', $name); $name = str_replace('St ', 'St. ', $name); return $name; } 

这里是一个输出的例子

 Array ( [Pacific/Midway] => (GMT-11:00) Pacific, Midway [Pacific/Niue] => (GMT-11:00) Pacific, Niue [Pacific/Pago_Pago] => (GMT-11:00) Pacific, Pago Pago [America/Adak] => (GMT-10:00) America, Adak [Pacific/Honolulu] => (GMT-10:00) Pacific, Honolulu [Pacific/Johnston] => (GMT-10:00) Pacific, Johnston [Pacific/Rarotonga] => (GMT-10:00) Pacific, Rarotonga [Pacific/Tahiti] => (GMT-10:00) Pacific, Tahiti [Pacific/Marquesas] => (GMT-09:30) Pacific, Marquesas [America/Anchorage] => (GMT-09:00) America, Anchorage ... ) 

Answer 4

我会做下面的代码，这是类似于接受的答案（我知道代码可以重构:)）：

  $list = DateTimeZone::listAbbreviations(); $idents = DateTimeZone::listIdentifiers(); $data = $offset = $added = array(); foreach ($list as $abbr => $info) { foreach ($info as $zone) { if ( ! empty($zone['timezone_id']) AND ! in_array($zone['timezone_id'], $added) AND in_array($zone['timezone_id'], $idents)) { $z = new DateTimeZone($zone['timezone_id']); $c = new DateTime(null, $z); $zone['time'] = $c->format('H:i a'); $data[] = $zone; $offset[] = $z->getOffset($c); $added[] = $zone['timezone_id']; } } } array_multisort($offset, SORT_ASC, $data); $options = array(); foreach ($data as $key => $row) { $options[$row['timezone_id']] = $row['time'] . ' - ' . formatOffset($row['offset']) . ' ' . $row['timezone_id']; } // now you can use $options; function formatOffset($offset) { $hours = $offset / 3600; $remainder = $offset % 3600; $sign = $hours > 0 ? '+' : '-'; $hour = (int) abs($hours); $minutes = (int) abs($remainder / 60); if ($hour == 0 AND $minutes == 0) { $sign = ' '; } return 'GMT' . $sign . str_pad($hour, 2, '0', STR_PAD_LEFT) .':'. str_pad($minutes,2, '0'); } 

它产生如下的东西：

 <option value="America/Boise" label="02:10 am - GMT-06:00 America/Boise">02:10 am - GMT-06:00 America/Boise</option> <option value="America/Denver" label="02:10 am - GMT-06:00 America/Denver">02:10 am - GMT-06:00 America/Denver</option> <option value="America/Edmonton" label="02:10 am - GMT-06:00 America/Edmonton">02:10 am - GMT-06:00 America/Edmonton</option> <option value="America/Inuvik" label="02:10 am - GMT-06:00 America/Inuvik">02:10 am - GMT-06:00 America/Inuvik</option> <option value="America/Shiprock" label="02:10 am - GMT-06:00 America/Shiprock">02:10 am - GMT-06:00 America/Shiprock</option> <option value="America/Belize" label="02:10 am - GMT-05:00 America/Belize">02:10 am - GMT-05:00 America/Belize</option> 

希望能有所帮助和/或启发你更好的东西。

Answer 5

你可以从这个数组中创build一个非常简单的下拉列表（把它们放在一起testing它是一个耗时的任务）。 我们已经在我们的一些应用程序中使用这个列表。

将date时间标识符存储在数据库中非常重要 ，而不是像“GMT + 2”这样的时区偏移量，因为日光节约时间。

UPDATE

我更新/更正时区列表（也签出： https ： //github.com/paptamas/timezones ）：

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

Answer 6

编辑Tamas的回答，删除所有的php.net网站所说的“其他”条目不应再被使用。

也许不重要，但只是遵循最佳做法。 请查看http://fr2.php.net/manual/en/timezones.others.php底部的注意事项;

此外，虽然这个名单有亚速尔群岛格林尼治标准时间-1，事实上，我认为是一样的（至less有时）格林尼治标准时间，但不知道。

编辑提供这在SQL中，所以你可以创build一个窗体中的下拉列表，并将用户的答案绑定到一个索引。

再次编辑删除领先的空间

 CREATE TABLE IF NOT EXISTS `timezones` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(44) DEFAULT NULL, `timezone` varchar(30) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=141 ; -- -- Dumping data for table `timezones` -- INSERT INTO `timezones` (`id`, `name`, `timezone`) VALUES (1, '(GMT-11:00) Midway Island ', 'Pacific/Midway'), (2, '(GMT-11:00) Samoa ', 'Pacific/Samoa'), (3, '(GMT-10:00) Hawaii ', 'Pacific/Honolulu'), (4, '(GMT-09:00) Alaska ', 'America/Anchorage'), (5, '(GMT-08:00) Pacific Time (US & Canada) ', 'America/Los_Angeles'), (6, '(GMT-08:00) Tijuana ', 'America/Tijuana'), (7, '(GMT-07:00) Chihuahua ', 'America/Chihuahua'), (8, '(GMT-07:00) La Paz ', 'America/Chihuahua'), (9, '(GMT-07:00) Mazatlan ', 'America/Mazatlan'), (10, '(GMT-07:00) Mountain Time (US & Canada) ', 'America/Denver'), (11, '(GMT-06:00) Central America ', 'America/Managua'), (12, '(GMT-06:00) Central Time (US & Canada) ', 'America/Chicago'), (13, '(GMT-06:00) Guadalajara ', 'America/Mexico_City'), (14, '(GMT-06:00) Mexico City ', 'America/Mexico_City'), (15, '(GMT-06:00) Monterrey ', 'America/Monterrey'), (16, '(GMT-05:00) Bogota ', 'America/Bogota'), (17, '(GMT-05:00) Eastern Time (US & Canada) ', 'America/New_York'), (18, '(GMT-05:00) Lima ', 'America/Lima'), (19, '(GMT-05:00) Quito ', 'America/Bogota'), (20, '(GMT-04:00) Atlantic Time (Canada) ', 'Canada/Atlantic'), (21, '(GMT-04:30) Caracas ', 'America/Caracas'), (22, '(GMT-04:00) La Paz ', 'America/La_Paz'), (23, '(GMT-04:00) Santiago ', 'America/Santiago'), (24, '(GMT-03:30) Newfoundland ', 'America/St_Johns'), (25, '(GMT-03:00) Brasilia ', 'America/Sao_Paulo'), (26, '(GMT-03:00) Buenos Aires ', 'America/Argentina/Buenos_Aires'), (27, '(GMT-03:00) Georgetown ', 'America/Argentina/Buenos_Aires'), (28, '(GMT-03:00) Greenland ', 'America/Godthab'), (29, '(GMT-02:00) Mid-Atlantic ', 'America/Noronha'), (30, '(GMT-01:00) Azores ', 'Atlantic/Azores'), (31, '(GMT-01:00) Cape Verde Is. ', 'Atlantic/Cape_Verde'), (32, '(GMT+00:00) Casablanca ', 'Africa/Casablanca'), (33, '(GMT+00:00) Edinburgh ', 'Europe/London'), (34, '(GMT+00:00) Dublin ', 'Europe/Dublin'), (35, '(GMT+00:00) Lisbon ', 'Europe/Lisbon'), (36, '(GMT+00:00) London ', 'Europe/London'), (37, '(GMT+00:00) Monrovia ', 'Africa/Monrovia'), (38, '(GMT+00:00) UTC ', 'UTC'), (39, '(GMT+01:00) Amsterdam ', 'Europe/Amsterdam'), (40, '(GMT+01:00) Belgrade ', 'Europe/Belgrade'), (41, '(GMT+01:00) Berlin ', 'Europe/Berlin'), (42, '(GMT+01:00) Bern ', 'Europe/Berlin'), (43, '(GMT+01:00) Bratislava ', 'Europe/Bratislava'), (44, '(GMT+01:00) Brussels ', 'Europe/Brussels'), (45, '(GMT+01:00) Budapest ', 'Europe/Budapest'), (46, '(GMT+01:00) Copenhagen ', 'Europe/Copenhagen'), (47, '(GMT+01:00) Ljubljana ', 'Europe/Ljubljana'), (48, '(GMT+01:00) Madrid ', 'Europe/Madrid'), (49, '(GMT+01:00) Paris ', 'Europe/Paris'), (50, '(GMT+01:00) Prague ', 'Europe/Prague'), (51, '(GMT+01:00) Rome ', 'Europe/Rome'), (52, '(GMT+01:00) Sarajevo ', 'Europe/Sarajevo'), (53, '(GMT+01:00) Skopje ', 'Europe/Skopje'), (54, '(GMT+01:00) Stockholm ', 'Europe/Stockholm'), (55, '(GMT+01:00) Vienna ', 'Europe/Vienna'), (56, '(GMT+01:00) Warsaw ', 'Europe/Warsaw'), (57, '(GMT+01:00) West Central Africa ', 'Africa/Lagos'), (58, '(GMT+01:00) Zagreb ', 'Europe/Zagreb'), (59, '(GMT+02:00) Athens ', 'Europe/Athens'), (60, '(GMT+02:00) Bucharest ', 'Europe/Bucharest'), (61, '(GMT+02:00) Cairo ', 'Africa/Cairo'), (62, '(GMT+02:00) Harare ', 'Africa/Harare'), (63, '(GMT+02:00) Helsinki ', 'Europe/Helsinki'), (64, '(GMT+02:00) Istanbul ', 'Europe/Istanbul'), (65, '(GMT+02:00) Jerusalem ', 'Asia/Jerusalem'), (66, '(GMT+02:00) Kyiv ', 'Europe/Helsinki'), (67, '(GMT+02:00) Pretoria ', 'Africa/Johannesburg'), (68, '(GMT+02:00) Riga ', 'Europe/Riga'), (69, '(GMT+02:00) Sofia ', 'Europe/Sofia'), (70, '(GMT+02:00) Tallinn ', 'Europe/Tallinn'), (71, '(GMT+02:00) Vilnius ', 'Europe/Vilnius'), (72, '(GMT+03:00) Baghdad ', 'Asia/Baghdad'), (73, '(GMT+03:00) Kuwait ', 'Asia/Kuwait'), (74, '(GMT+03:00) Minsk ', 'Europe/Minsk'), (75, '(GMT+03:00) Nairobi ', 'Africa/Nairobi'), (76, '(GMT+03:00) Riyadh ', 'Asia/Riyadh'), (77, '(GMT+03:00) Volgograd ', 'Europe/Volgograd'), (78, '(GMT+03:30) Tehran ', 'Asia/Tehran'), (79, '(GMT+04:00) Abu Dhabi ', 'Asia/Muscat'), (80, '(GMT+04:00) Baku ', 'Asia/Baku'), (81, '(GMT+04:00) Moscow ', 'Europe/Moscow'), (82, '(GMT+04:00) Muscat ', 'Asia/Muscat'), (83, '(GMT+04:00) St. Petersburg ', 'Europe/Moscow'), (84, '(GMT+04:00) Tbilisi ', 'Asia/Tbilisi'), (85, '(GMT+04:00) Yerevan ', 'Asia/Yerevan'), (86, '(GMT+04:30) Kabul ', 'Asia/Kabul'), (87, '(GMT+05:00) Islamabad ', 'Asia/Karachi'), (88, '(GMT+05:00) Karachi ', 'Asia/Karachi'), (89, '(GMT+05:00) Tashkent ', 'Asia/Tashkent'), (90, '(GMT+05:30) Chennai ', 'Asia/Calcutta'), (91, '(GMT+05:30) Kolkata ', 'Asia/Kolkata'), (92, '(GMT+05:30) Mumbai ', 'Asia/Calcutta'), (93, '(GMT+05:30) New Delhi ', 'Asia/Calcutta'), (94, '(GMT+05:30) Sri Jayawardenepura ', 'Asia/Calcutta'), (95, '(GMT+05:45) Kathmandu ', 'Asia/Katmandu'), (96, '(GMT+06:00) Almaty ', 'Asia/Almaty'), (97, '(GMT+06:00) Astana ', 'Asia/Dhaka'), (98, '(GMT+06:00) Dhaka ', 'Asia/Dhaka'), (99, '(GMT+06:00) Ekaterinburg ', 'Asia/Yekaterinburg'), (100, '(GMT+06:30) Rangoon ', 'Asia/Rangoon'), (101, '(GMT+07:00) Bangkok ', 'Asia/Bangkok'), (102, '(GMT+07:00) Hanoi ', 'Asia/Bangkok'), (103, '(GMT+07:00) Jakarta ', 'Asia/Jakarta'), (104, '(GMT+07:00) Novosibirsk ', 'Asia/Novosibirsk'), (105, '(GMT+08:00) Beijing ', 'Asia/Hong_Kong'), (106, '(GMT+08:00) Chongqing ', 'Asia/Chongqing'), (107, '(GMT+08:00) Hong Kong ', 'Asia/Hong_Kong'), (108, '(GMT+08:00) Krasnoyarsk ', 'Asia/Krasnoyarsk'), (109, '(GMT+08:00) Kuala Lumpur ', 'Asia/Kuala_Lumpur'), (110, '(GMT+08:00) Perth ', 'Australia/Perth'), (111, '(GMT+08:00) Singapore ', 'Asia/Singapore'), (112, '(GMT+08:00) Taipei ', 'Asia/Taipei'), (113, '(GMT+08:00) Ulaan Bataar ', 'Asia/Ulan_Bator'), (114, '(GMT+08:00) Urumqi ', 'Asia/Urumqi'), (115, '(GMT+09:00) Irkutsk ', 'Asia/Irkutsk'), (116, '(GMT+09:00) Osaka ', 'Asia/Tokyo'), (117, '(GMT+09:00) Sapporo ', 'Asia/Tokyo'), (118, '(GMT+09:00) Seoul ', 'Asia/Seoul'), (119, '(GMT+09:00) Tokyo ', 'Asia/Tokyo'), (120, '(GMT+09:30) Adelaide ', 'Australia/Adelaide'), (121, '(GMT+09:30) Darwin ', 'Australia/Darwin'), (122, '(GMT+10:00) Brisbane ', 'Australia/Brisbane'), (123, '(GMT+10:00) Canberra ', 'Australia/Canberra'), (124, '(GMT+10:00) Guam ', 'Pacific/Guam'), (125, '(GMT+10:00) Hobart ', 'Australia/Hobart'), (126, '(GMT+10:00) Melbourne ', 'Australia/Melbourne'), (127, '(GMT+10:00) Port Moresby ', 'Pacific/Port_Moresby'), (128, '(GMT+10:00) Sydney ', 'Australia/Sydney'), (129, '(GMT+10:00) Yakutsk ', 'Asia/Yakutsk'), (130, '(GMT+11:00) Vladivostok ', 'Asia/Vladivostok'), (131, '(GMT+12:00) Auckland ', 'Pacific/Auckland'), (132, '(GMT+12:00) Fiji ', 'Pacific/Fiji'), (133, '(GMT+12:00) International Date Line West ', 'Pacific/Kwajalein'), (134, '(GMT+12:00) Kamchatka ', 'Asia/Kamchatka'), (135, '(GMT+12:00) Magadan ', 'Asia/Magadan'), (136, '(GMT+12:00) Marshall Is. ', 'Pacific/Fiji'), (137, '(GMT+12:00) New Caledonia ', 'Asia/Magadan'), (138, '(GMT+12:00) Solomon Is. ', 'Asia/Magadan'), (139, '(GMT+12:00) Wellington ', 'Pacific/Auckland'), (140, '(GMT+13:00) Nuku\\alofa ', 'Pacific/Tongatapu'); /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */; /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */; /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */; 

Answer 7

Using listAbbreviations() makes no sense as for every area it returns all the different offsets that were historically used there, not just current ones. The right base source of the list is definitely listIdentifiers().

I would generate the list just once and save it to avoid generating it for every request. I could refresh it once a month.

Also, I could put all the timezones info into a separate js-script and generate the select list itself on the client side. The js-script could be cached as well, timezones don't change often.

Also, using javascript on the client side, you can know the current local time, and hence you can find the zones that have the same time now (minutes may differ, so comparison should be approximate), and display them on the top of the list, so the user does not have to scroll through all the 400 items. You can also display adjacent zones (+/-1 hour) following.

Answer 8

I know this has an answer already but I saw an opportunity to improve upon one of the answers here. Toland H posted some very good code that does exactly what the question was asking for. Below is a shortened and expand version of Toland H's code:

• The function places everything in option tags for you. Just echo out whats return between your select tags.
• Major Improvement: The list is sorted first by continent and organized in option groups based on continents. Makes it very user friendly for visitors picking their timezone.

---

 function generate_timezone_list() { static $allRegions = array( DateTimeZone::AFRICA, DateTimeZone::AMERICA, DateTimeZone::ANTARCTICA, DateTimeZone::ASIA, DateTimeZone::ATLANTIC, DateTimeZone::AUSTRALIA, DateTimeZone::EUROPE, DateTimeZone::INDIAN, DateTimeZone::PACIFIC ); // Makes it easier to create option groups next $list = array ('AFRICA','AMERICA','ANTARCTICA','ASIA','ATLANTIC','AUSTRALIA','EUROPE','INDIAN','PACIFIC'); // Make array holding the regions (continents), they are arrays w/ all their cities $region = array(); foreach ($allRegions as $area){ array_push ($region,DateTimeZone::listIdentifiers( $area )); } $count = count ($region); $i = 0; $holder = ''; // Go through each region one by one, sorting and formatting it's cities while ($i < $count){ $chunck = $region[$i]; // Create the region (continents) option group $holder .= '<optgroup label="---------- '.$list[$i].' ----------">'; $timezone_offsets = array(); foreach( $chunck as $timezone ){ $tz = new DateTimeZone($timezone); $timezone_offsets[$timezone] = $tz->getOffset(new DateTime); } asort ($timezone_offsets); $timezone_list = array(); foreach ($timezone_offsets as $timezone => $offset){ $offset_prefix = $offset < 0 ? '-' : '+'; $offset_formatted = gmdate( 'H:i', abs($offset) ); $pretty_offset = "UTC ${offset_prefix}${offset_formatted}"; $timezone_list[$timezone] = "(${pretty_offset}) $timezone"; } // All the formatting is done, finish and move on to next region foreach ($timezone_list as $key => $val){ $holder .= '<option value="'.$key.'">'.$val.'</option>'; } $holder .= '</optgroup>'; ++$i; } return $holder; } echo "<select>".generate_timezone_list()."</select>"; 

Then all you need to do is echo out what is returned between your html select tags. You'll get a select list something like this:

 ----- AFRICA ----- (UTC +00:00) Africa/ city name (UTC +01:00) Africa/ city name (UTC +02:00) Africa/ city name (UTC +02:00) Africa/ city name ----- AMERICA ----- (UTC -09:00) America/ city name (UTC -07:00) America/ city name (UTC +02:00) America/ city name (UTC +05:00) America/ city name 

等等…

Answer 9

I wanted to have something simpler for my users, the way Google does it..

 $timezones = [ "AF" => [ "name" => "Afghanistan" ], "AL" => [ "name" => "Albania" ], "DZ" => [ "name" => "Algeria" ], "AS" => [ "name" => "American Samoa" ], "AD" => [ "name" => "Andorra" ], "AQ" => [ "name" => "Antarctica" ], "AG" => [ "name" => "Antigua & Barbuda" ], "AR" => [ "name" => "Argentina" ], "AM" => [ "name" => "Armenia" ], "AU" => [ "name" => "Australia" ], "AT" => [ "name" => "Austria" ], "AZ" => [ "name" => "Azerbaijan" ], "BS" => [ "name" => "Bahamas" ], "BD" => [ "name" => "Bangladesh" ], "BB" => [ "name" => "Barbados" ], "BY" => [ "name" => "Belarus" ], "BE" => [ "name" => "Belgium" ], "BZ" => [ "name" => "Belize" ], "BM" => [ "name" => "Bermuda" ], "BT" => [ "name" => "Bhutan" ], "BO" => [ "name" => "Bolivia" ], "BA" => [ "name" => "Bosnia & Herzegovina" ], "BR" => [ "name" => "Brazil" ], "IO" => [ "name" => "British Indian Ocean Territory" ], "BN" => [ "name" => "Brunei" ], "BG" => [ "name" => "Bulgaria" ], "CA" => [ "name" => "Canada" ], "CV" => [ "name" => "Cape Verde" ], "KY" => [ "name" => "Cayman Islands" ], "TD" => [ "name" => "Chad" ], "CL" => [ "name" => "Chile" ], "CN" => [ "name" => "China" ], "CX" => [ "name" => "Christmas Island" ], "CC" => [ "name" => "Cocos (Keeling) Islands" ], "CO" => [ "name" => "Colombia" ], "CK" => [ "name" => "Cook Islands" ], "CR" => [ "name" => "Costa Rica" ], "CI" => [ "name" => "Côte d'Ivoire" ], "HR" => [ "name" => "Croatia" ], "CU" => [ "name" => "Cuba" ], "CW" => [ "name" => "Curaçao" ], "CY" => [ "name" => "Cyprus" ], "CZ" => [ "name" => "Czech Republic" ], "DK" => [ "name" => "Denmark" ], "DO" => [ "name" => "Dominican Republic" ], "EC" => [ "name" => "Ecuador" ], "EG" => [ "name" => "Egypt" ], "SV" => [ "name" => "El Salvador" ], "EE" => [ "name" => "Estonia" ], "FK" => [ "name" => "Falkland Islands (Islas Malvinas)" ], "FO" => [ "name" => "Faroe Islands" ], "FJ" => [ "name" => "Fiji" ], "FI" => [ "name" => "Finland" ], "FR" => [ "name" => "France" ], "GF" => [ "name" => "French Guiana" ], "PF" => [ "name" => "French Polynesia" ], "TF" => [ "name" => "French Southern Territories" ], "GE" => [ "name" => "Georgia" ], "DE" => [ "name" => "Germany" ], "GH" => [ "name" => "Ghana" ], "GI" => [ "name" => "Gibraltar" ], "GR" => [ "name" => "Greece" ], "GL" => [ "name" => "Greenland" ], "GU" => [ "name" => "Guam" ], "GT" => [ "name" => "Guatemala" ], "GW" => [ "name" => "Guinea-Bissau" ], "GY" => [ "name" => "Guyana" ], "HT" => [ "name" => "Haiti" ], "HN" => [ "name" => "Honduras" ], "HK" => [ "name" => "Hong Kong" ], "HU" => [ "name" => "Hungary" ], "IS" => [ "name" => "Iceland" ], "IN" => [ "name" => "India" ], "ID" => [ "name" => "Indonesia" ], "IR" => [ "name" => "Iran" ], "IQ" => [ "name" => "Iraq" ], "IE" => [ "name" => "Ireland" ], "IL" => [ "name" => "Israel" ], "IT" => [ "name" => "Italy" ], "JM" => [ "name" => "Jamaica" ], "JP" => [ "name" => "Japan" ], "JO" => [ "name" => "Jordan" ], "KZ" => [ "name" => "Kazakhstan" ], "KE" => [ "name" => "Kenya" ], "KI" => [ "name" => "Kiribati" ], "KG" => [ "name" => "Kyrgyzstan" ], "LV" => [ "name" => "Latvia" ], "LB" => [ "name" => "Lebanon" ], "LR" => [ "name" => "Liberia" ], "LY" => [ "name" => "Libya" ], "LT" => [ "name" => "Lithuania" ], "LU" => [ "name" => "Luxembourg" ], "MO" => [ "name" => "Macau" ], "MK" => [ "name" => "Macedonia (FYROM)" ], "MY" => [ "name" => "Malaysia" ], "MV" => [ "name" => "Maldives" ], "MT" => [ "name" => "Malta" ], "MH" => [ "name" => "Marshall Islands" ], "MQ" => [ "name" => "Martinique" ], "MU" => [ "name" => "Mauritius" ], "MX" => [ "name" => "Mexico" ], "FM" => [ "name" => "Micronesia" ], "MD" => [ "name" => "Moldova" ], "MC" => [ "name" => "Monaco" ], "MN" => [ "name" => "Mongolia" ], "MA" => [ "name" => "Morocco" ], "MZ" => [ "name" => "Mozambique" ], "MM" => [ "name" => "Myanmar (Burma)" ], "NA" => [ "name" => "Namibia" ], "NR" => [ "name" => "Nauru" ], "NP" => [ "name" => "Nepal" ], "NL" => [ "name" => "Netherlands" ], "NC" => [ "name" => "New Caledonia" ], "NZ" => [ "name" => "New Zealand" ], "NI" => [ "name" => "Nicaragua" ], "NG" => [ "name" => "Nigeria" ], "NU" => [ "name" => "Niue" ], "NF" => [ "name" => "Norfolk Island" ], "KP" => [ "name" => "North Korea" ], "MP" => [ "name" => "Northern Mariana Islands" ], "NO" => [ "name" => "Norway" ], "PK" => [ "name" => "Pakistan" ], "PW" => [ "name" => "Palau" ], "PS" => [ "name" => "Palestine" ], "PA" => [ "name" => "Panama" ], "PG" => [ "name" => "Papua New Guinea" ], "PY" => [ "name" => "Paraguay" ], "PE" => [ "name" => "Peru" ], "PH" => [ "name" => "Philippines" ], "PN" => [ "name" => "Pitcairn Islands" ], "PL" => [ "name" => "Poland" ], "PT" => [ "name" => "Portugal" ], "PR" => [ "name" => "Puerto Rico" ], "QA" => [ "name" => "Qatar" ], "RE" => [ "name" => "Réunion" ], "RO" => [ "name" => "Romania" ], "RU" => [ "name" => "Russia" ], "WS" => [ "name" => "Samoa" ], "SM" => [ "name" => "San Marino" ], "SA" => [ "name" => "Saudi Arabia" ], "RS" => [ "name" => "Serbia" ], "SC" => [ "name" => "Seychelles" ], "SG" => [ "name" => "Singapore" ], "SK" => [ "name" => "Slovakia" ], "SI" => [ "name" => "Slovenia" ], "SB" => [ "name" => "Solomon Islands" ], "ZA" => [ "name" => "South Africa" ], "GS" => [ "name" => "South Georgia & South Sandwich Islands" ], "KR" => [ "name" => "South Korea" ], "ES" => [ "name" => "Spain" ], "LK" => [ "name" => "Sri Lanka" ], "PM" => [ "name" => "St. Pierre & Miquelon" ], "SD" => [ "name" => "Sudan" ], "SR" => [ "name" => "Suriname" ], "SJ" => [ "name" => "Svalbard & Jan Mayen" ], "SE" => [ "name" => "Sweden" ], "CH" => [ "name" => "Switzerland" ], "SY" => [ "name" => "Syria" ], "TW" => [ "name" => "Taiwan" ], "TJ" => [ "name" => "Tajikistan" ], "TH" => [ "name" => "Thailand" ], "TL" => [ "name" => "Timor-Leste" ], "TK" => [ "name" => "Tokelau" ], "TO" => [ "name" => "Tonga" ], "TT" => [ "name" => "Trinidad & Tobago" ], "TN" => [ "name" => "Tunisia" ], "TR" => [ "name" => "Turkey" ], "TM" => [ "name" => "Turkmenistan" ], "TC" => [ "name" => "Turks & Caicos Islands" ], "TV" => [ "name" => "Tuvalu" ], "UM" => [ "name" => "US Outlying Islands" ], "UA" => [ "name" => "Ukraine" ], "AE" => [ "name" => "United Arab Emirates" ], "GB" => [ "name" => "United Kingdom" ], "US" => [ "name" => "United States" ], "UY" => [ "name" => "Uruguay" ], "UZ" => [ "name" => "Uzbekistan" ], "VU" => [ "name" => "Vanuatu" ], "VA" => [ "name" => "Vatican City" ], "VE" => [ "name" => "Venezuela" ], "VN" => [ "name" => "Vietnam" ], "WF" => [ "name" => "Wallis & Futuna" ], "EH" => [ "name" => "Western Sahara" ], ]; // taken from Toland Hon's Answer function prettyOffset($offset) { $offset_prefix = $offset < 0 ? '-' : '+'; $offset_formatted = gmdate( 'H:i', abs($offset) ); $pretty_offset = "UTC${offset_prefix}${offset_formatted}"; return $pretty_offset; } foreach ($timezones as $k => $v) { $tz = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $k); foreach ($tz as $value) { $t = new DateTimeZone($value); $offset = (new DateTime("now", $t))->getOffset(); $timezones[$k]['timezones'][$value] = prettyOffset($offset); } } 

This gives me an array grouped by countries:

 ["US"]=> array(2) { ["name"]=> string(13) "United States" ["timezones"]=> array(29) { ["America/Adak"]=> string(9) "UTC-10:00" ["America/Anchorage"]=> string(9) "UTC-09:00" ["America/Boise"]=> string(9) "UTC-07:00" ["America/Chicago"]=> string(9) "UTC-06:00" ["America/Denver"]=> string(9) "UTC-07:00" ["America/Detroit"]=> string(9) "UTC-05:00" ["America/Indiana/Indianapolis"]=> string(9) "UTC-05:00" ["America/Indiana/Knox"]=> string(9) "UTC-06:00" ["America/Indiana/Marengo"]=> string(9) "UTC-05:00" ["America/Indiana/Petersburg"]=> string(9) "UTC-05:00" ["America/Indiana/Tell_City"]=> string(9) "UTC-06:00" ["America/Indiana/Vevay"]=> string(9) "UTC-05:00" ["America/Indiana/Vincennes"]=> string(9) "UTC-05:00" ["America/Indiana/Winamac"]=> string(9) "UTC-05:00" ["America/Juneau"]=> string(9) "UTC-09:00" ["America/Kentucky/Louisville"]=> string(9) "UTC-05:00" ["America/Kentucky/Monticello"]=> string(9) "UTC-05:00" ["America/Los_Angeles"]=> string(9) "UTC-08:00" ["America/Menominee"]=> string(9) "UTC-06:00" ["America/Metlakatla"]=> string(9) "UTC-08:00" ["America/New_York"]=> string(9) "UTC-05:00" ["America/Nome"]=> string(9) "UTC-09:00" ["America/North_Dakota/Beulah"]=> string(9) "UTC-06:00" ["America/North_Dakota/Center"]=> string(9) "UTC-06:00" ["America/North_Dakota/New_Salem"]=> string(9) "UTC-06:00" ["America/Phoenix"]=> string(9) "UTC-07:00" ["America/Sitka"]=> string(9) "UTC-09:00" ["America/Yakutat"]=> string(9) "UTC-09:00" ["Pacific/Honolulu"]=> string(9) "UTC-10:00" } } 

Which means now I can do something like below (of course with some javaScript trickery):

Answer 10

This PHP function do the Job for you an give back an array:

 function time_zonelist(){ $return = array(); $timezone_identifiers_list = timezone_identifiers_list(); foreach($timezone_identifiers_list as $timezone_identifier){ $date_time_zone = new DateTimeZone($timezone_identifier); $date_time = new DateTime('now', $date_time_zone); $hours = floor($date_time_zone->getOffset($date_time) / 3600); $mins = floor(($date_time_zone->getOffset($date_time) - ($hours*3600)) / 60); $hours = 'GMT' . ($hours < 0 ? $hours : '+'.$hours); $mins = ($mins > 0 ? $mins : '0'.$mins); $text = str_replace("_"," ",$timezone_identifier); $return[$timezone_identifier] = $text.' ('.$hours.':'.$mins.')'; } return $return; } 

This PHP function give back an array of all existing Timezones including Offset:

Use it eg like this:

 print_r(time_zonelist()); 

Answer 11

In some projects it really doesn't make sense to have the detailed timezones of Africa, Europe or Pacific. So here is a short version

 $timezoneTable = array( "-12" => "(GMT -12:00) Eniwetok, Kwajalein", "-11" => "(GMT -11:00) Midway Island, Samoa", "-10" => "(GMT -10:00) Hawaii", "-9" => "(GMT -9:00) Alaska", "-8" => "(GMT -8:00) Pacific Time (US &amp; Canada)", "-7" => "(GMT -7:00) Mountain Time (US &amp; Canada)", "-6" => "(GMT -6:00) Central Time (US &amp; Canada), Mexico City", "-5" => "(GMT -5:00) Eastern Time (US &amp; Canada), Bogota, Lima", "-4" => "(GMT -4:00) Atlantic Time (Canada), Caracas, La Paz", "-3.5" => "(GMT -3:30) Newfoundland", "-3" => "(GMT -3:00) Brazil, Buenos Aires, Georgetown", "-2" => "(GMT -2:00) Mid-Atlantic", "-1" => "(GMT -1:00) Azores, Cape Verde Islands", "0" => "(GMT) Western Europe Time, London, Lisbon, Casablanca", "1" => "(GMT +1:00) Brussels, Copenhagen, Madrid, Paris", "2" => "(GMT +2:00) Kaliningrad, South Africa", "3" => "(GMT +3:00) Baghdad, Riyadh, Moscow, St. Petersburg", "3.5" => "(GMT +3:30) Tehran", "4" => "(GMT +4:00) Abu Dhabi, Muscat, Baku, Tbilisi", "4.5" => "(GMT +4:30) Kabul", "5" => "(GMT +5:00) Ekaterinburg, Islamabad, Karachi, Tashkent", "5.5" => "(GMT +5:30) Bombay, Calcutta, Madras, New Delhi", "6" => "(GMT +6:00) Almaty, Dhaka, Colombo", "7" => "(GMT +7:00) Bangkok, Hanoi, Jakarta", "8" => "(GMT +8:00) Beijing, Perth, Singapore, Hong Kong", "9" => "(GMT +9:00) Tokyo, Seoul, Osaka, Sapporo, Yakutsk", "9.5" => "(GMT +9:30) Adelaide, Darwin", "10" => "(GMT +10:00) Eastern Australia, Guam, Vladivostok", "11" => "(GMT +11:00) Magadan, Solomon Islands, New Caledonia", "12" => "(GMT +12:00) Auckland, Wellington, Fiji, Kamchatka" ); echo "<select>"; foreach ($timezoneTable as $k => $v){ $sel = ($k==-5)?" selected":""; echo "<option value='".$k."'".$sel.">".$v."</option>"; } echo "</select>" 

this will generate a select as below:

Answer 12

the first option would allow you to take the value from $_POST['whateveryoucalltheselect'] and add it to UTC. or even store that value and then always call UTC + userTZsetting whenever you need it later. seems easiest to me. the last option would be much more valuable if timezones changed frequently.

Answer 13

他们都没有。 Instead prepare an array in PHP with those timezones. 喜欢

 $arr[0] = "(GMT+02:00) Harare, Pretoria"; $arr[1] = "(GMT+03:00) Jerusalem"; 

要么

 $arr[0] = array("America/Campo_Grande", "(GMT+02:00) Harare, Pretoria"); $arr[1] = array("America/Israel", "(GMT+03:00) Jerusalem"); 

等等。 Then generate form based on this array:

 foreach ($arr as $k => $v) $str .= "<option value=$k>$v[1]</option>"; 

And then you may easily switch with different formats with just code modification in above line. Also validation will be much easier and don't require regular expressions. Just compare value sent by POST or GET with an array. Now it's easy to set $arr[$value_sent_by_form][0] holds PHP compatible value while $arr[$value_sent_by_form][1] user friendly value.

Answer 14

See this example also

 <?php function get_timezones() { $o = array(); $t_zones = timezone_identifiers_list(); foreach($t_zones as $a) { $t = ''; try { //this throws exception for 'US/Pacific-New' $zone = new DateTimeZone($a); $seconds = $zone->getOffset( new DateTime("now" , $zone) ); $hours = sprintf( "%+02d" , intval($seconds/3600)); $minutes = sprintf( "%02d" , ($seconds%3600)/60 ); $t = $a ." [ $hours:$minutes ]" ; $o[$a] = $t; } //exceptions must be catched, else a blank page catch(Exception $e) { //die("Exception : " . $e->getMessage() . '<br />'); //what to do in catch ? , nothing just relax } } ksort($o); return $o; } $o = get_timezones(); ?> <html> <body> <select name="time_zone"> <?php foreach($o as $tz => $label) { echo "<option value="$tz">$label</option>"; } ?> </select> </body> </html> 

Answer 15

After trying all solutions presented here and not being satisfied, I have found a script which is matching my needs and it is more user friendly. For the record, I will save it as a possible solution. I love the copy/paste solutions 🙂

Script returns a select with whatever timezone you want preselected.

Source: https://e-tel.eu/2011/07/13/create-a-time-zone-drop-down-list-ddl-in-php/

 <?php /** * returns a HTML formated TimeZone select * * PHP 5 >= 5.2.0 * * @param $selectedTimeZone string The timezone marked as "selected" * @return string */ function displayTimeZoneSelect($selectedTimeZone = 'America/New_York'){ $countryCodes = getCountryCodes(); $return = null; foreach ($countryCodes as $country => $countryCode) { $timezone_identifiers = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY,$countryCode); foreach( $timezone_identifiers as $value ){ /* getTimeZoneOffset returns minutes and we need to display hours */ $offset = getTimeZoneOffset($value)/60; /* for the GMT+1 GMT-1 display */ $offset = ( substr($offset,0,1) == "-" ? " (GMT" : " (GMT+" ) . $offset . ")"; /* America/New_York -> America/New York */ $displayValue = (str_replace('_',' ',$value)); /* Find the city */ $ex = explode("/",$displayValue); $city = ( ($ex[2]) ? $ex[2] : $ex[1] ); /* For the special names */ $displayValue = htmlentities($country." - ".$city.$offset); /* handle the $selectedTimeZone in the select form */ $selected = ( ($value == $selectedTimeZone) ? ' selected="selected"' : null ); $return .= '<option value="' . $value . '"' . $selected . '>' . $displayValue . '</option>' . PHP_EOL; } } return $return; } /** * ISO 3166 code list * * @return array The country codes in 'COUNTRY' => 'CODE' format * @link http://www.iso.org/iso/iso_3166_code_lists ISO Website */ function getCountryCodes(){ $return = array( "AFGHANISTAN"=>"AF", "ALAND ISLANDS"=>"AX", "ALBANIA"=>"AL", "ALGERIA"=>"DZ", "AMERICAN SAMOA"=>"AS", "ANDORRA"=>"AD", "ANGOLA"=>"AO", "ANGUILLA"=>"AI", "ANTARCTICA"=>"AQ", "ANTIGUA AND BARBUDA"=>"AG", "ARGENTINA"=>"AR", "ARMENIA"=>"AM", "ARUBA"=>"AW", "AUSTRALIA"=>"AU", "AUSTRIA"=>"AT", "AZERBAIJAN"=>"AZ", "BAHAMAS"=>"BS", "BAHRAIN"=>"BH", "BANGLADESH"=>"BD", "BARBADOS"=>"BB", "BELARUS"=>"BY", "BELGIUM"=>"BE", "BELIZE"=>"BZ", "BENIN"=>"BJ", "BERMUDA"=>"BM", "BHUTAN"=>"BT", "BOLIVIA, PLURINATIONAL STATE OF"=>"BO", "BONAIRE, SINT EUSTATIUS AND SABA"=>"BQ", "BOSNIA AND HERZEGOVINA"=>"BA", "BOTSWANA"=>"BW", "BOUVET ISLAND"=>"BV", "BRAZIL"=>"BR", "BRITISH INDIAN OCEAN TERRITORY"=>"IO", "BRUNEI DARUSSALAM"=>"BN", "BULGARIA"=>"BG", "BURKINA FASO"=>"BF", "BURUNDI"=>"BI", "CAMBODIA"=>"KH", "CAMEROON"=>"CM", "CANADA"=>"CA", "CAPE VERDE"=>"CV", "CAYMAN ISLANDS"=>"KY", "CENTRAL AFRICAN REPUBLIC"=>"CF", "CHAD"=>"TD", "CHILE"=>"CL", "CHINA"=>"CN", "CHRISTMAS ISLAND"=>"CX", "COCOS (KEELING) ISLANDS"=>"CC", "COLOMBIA"=>"CO", "COMOROS"=>"KM", "CONGO"=>"CG", "CONGO, THE DEMOCRATIC REPUBLIC OF THE"=>"CD", "COOK ISLANDS"=>"CK", "COSTA RICA"=>"CR", "CÔTE D'IVOIRE"=>"CI", "CROATIA"=>"HR", "CUBA"=>"CU", "CURAÇAO"=>"CW", "CYPRUS"=>"CY", "CZECH REPUBLIC"=>"CZ", "DENMARK"=>"DK", "DJIBOUTI"=>"DJ", "DOMINICA"=>"DM", "DOMINICAN REPUBLIC"=>"DO", "ECUADOR"=>"EC", "EGYPT"=>"EG", "EL SALVADOR"=>"SV", "EQUATORIAL GUINEA"=>"GQ", "ERITREA"=>"ER", "ESTONIA"=>"EE", "ETHIOPIA"=>"ET", "FALKLAND ISLANDS (MALVINAS)"=>"FK", "FAROE ISLANDS"=>"FO", "FIJI"=>"FJ", "FINLAND"=>"FI", "FRANCE"=>"FR", "FRENCH GUIANA"=>"GF", "FRENCH POLYNESIA"=>"PF", "FRENCH SOUTHERN TERRITORIES"=>"TF", "GABON"=>"GA", "GAMBIA"=>"GM", "GEORGIA"=>"GE", "GERMANY"=>"DE", "GHANA"=>"GH", "GIBRALTAR"=>"GI", "GREECE"=>"GR", "GREENLAND"=>"GL", "GRENADA"=>"GD", "GUADELOUPE"=>"GP", "GUAM"=>"GU", "GUATEMALA"=>"GT", "GUERNSEY"=>"GG", "GUINEA"=>"GN", "GUINEA-BISSAU"=>"GW", "GUYANA"=>"GY", "HAITI"=>"HT", "HEARD ISLAND AND MCDONALD ISLANDS"=>"HM", "HOLY SEE (VATICAN CITY STATE)"=>"VA", "HONDURAS"=>"HN", "HONG KONG"=>"HK", "HUNGARY"=>"HU", "ICELAND"=>"IS", "INDIA"=>"IN", "INDONESIA"=>"ID", "IRAN, ISLAMIC REPUBLIC OF"=>"IR", "IRAQ"=>"IQ", "IRELAND"=>"IE", "ISLE OF MAN"=>"IM", "ISRAEL"=>"IL", "ITALY"=>"IT", "JAMAICA"=>"JM", "JAPAN"=>"JP", "JERSEY"=>"JE", "JORDAN"=>"JO", "KAZAKHSTAN"=>"KZ", "KENYA"=>"KE", "KIRIBATI"=>"KI", "KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF"=>"KP", "KOREA, REPUBLIC OF"=>"KR", "KUWAIT"=>"KW", "KYRGYZSTAN"=>"KG", "LAO PEOPLE'S DEMOCRATIC REPUBLIC"=>"LA", "LATVIA"=>"LV", "LEBANON"=>"LB", "LESOTHO"=>"LS", "LIBERIA"=>"LR", "LIBYAN ARAB JAMAHIRIYA"=>"LY", "LIECHTENSTEIN"=>"LI", "LITHUANIA"=>"LT", "LUXEMBOURG"=>"LU", "MACAO"=>"MO", "MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF"=>"MK", "MADAGASCAR"=>"MG", "MALAWI"=>"MW", "MALAYSIA"=>"MY", "MALDIVES"=>"MV", "MALI"=>"ML", "MALTA"=>"MT", "MARSHALL ISLANDS"=>"MH", "MARTINIQUE"=>"MQ", "MAURITANIA"=>"MR", "MAURITIUS"=>"MU", "MAYOTTE"=>"YT", "MEXICO"=>"MX", "MICRONESIA, FEDERATED STATES OF"=>"FM", "MOLDOVA, REPUBLIC OF"=>"MD", "MONACO"=>"MC", "MONGOLIA"=>"MN", "MONTENEGRO"=>"ME", "MONTSERRAT"=>"MS", "MOROCCO"=>"MA", "MOZAMBIQUE"=>"MZ", "MYANMAR"=>"MM", "NAMIBIA"=>"NA", "NAURU"=>"NR", "NEPAL"=>"NP", "NETHERLANDS"=>"NL", "NEW CALEDONIA"=>"NC", "NEW ZEALAND"=>"NZ", "NICARAGUA"=>"NI", "NIGER"=>"NE", "NIGERIA"=>"NG", "NIUE"=>"NU", "NORFOLK ISLAND"=>"NF", "NORTHERN MARIANA ISLANDS"=>"MP", "NORWAY"=>"NO", "OMAN"=>"OM", "PAKISTAN"=>"PK", "PALAU"=>"PW", "PALESTINIAN TERRITORY, OCCUPIED"=>"PS", "PANAMA"=>"PA", "PAPUA NEW GUINEA"=>"PG", "PARAGUAY"=>"PY", "PERU"=>"PE", "PHILIPPINES"=>"PH", "PITCAIRN"=>"PN", "POLAND"=>"PL", "PORTUGAL"=>"PT", "PUERTO RICO"=>"PR", "QATAR"=>"QA", "RÉUNION"=>"RE", "ROMANIA"=>"RO", "RUSSIAN FEDERATION"=>"RU", "RWANDA"=>"RW", "SAINT BARTHÉLEMY"=>"BL", "SAINT HELENA, ASCENSION AND TRISTAN DA CUNHA"=>"SH", "SAINT KITTS AND NEVIS"=>"KN", "SAINT LUCIA"=>"LC", "SAINT MARTIN (FRENCH PART)"=>"MF", "SAINT PIERRE AND MIQUELON"=>"PM", "SAINT VINCENT AND THE GRENADINES"=>"VC", "SAMOA"=>"WS", "SAN MARINO"=>"SM", "SAO TOME AND PRINCIPE"=>"ST", "SAUDI ARABIA"=>"SA", "SENEGAL"=>"SN", "SERBIA"=>"RS", "SEYCHELLES"=>"SC", "SIERRA LEONE"=>"SL", "SINGAPORE"=>"SG", "SINT MAARTEN (DUTCH PART)"=>"SX", "SLOVAKIA"=>"SK", "SLOVENIA"=>"SI", "SOLOMON ISLANDS"=>"SB", "SOMALIA"=>"SO", "SOUTH AFRICA"=>"ZA", "SOUTH GEORGIA AND THE SOUTH SANDWICH ISLANDS"=>"GS", "SPAIN"=>"ES", "SRI LANKA"=>"LK", "SUDAN"=>"SD", "SURINAME"=>"SR", "SVALBARD AND JAN MAYEN"=>"SJ", "SWAZILAND"=>"SZ", "SWEDEN"=>"SE", "SWITZERLAND"=>"CH", "SYRIAN ARAB REPUBLIC"=>"SY", "TAIWAN, PROVINCE OF CHINA"=>"TW", "TAJIKISTAN"=>"TJ", "TANZANIA, UNITED REPUBLIC OF"=>"TZ", "THAILAND"=>"TH", "TIMOR-LESTE"=>"TL", "TOGO"=>"TG", "TOKELAU"=>"TK", "TONGA"=>"TO", "TRINIDAD AND TOBAGO"=>"TT", "TUNISIA"=>"TN", "TURKEY"=>"TR", "TURKMENISTAN"=>"TM", "TURKS AND CAICOS ISLANDS"=>"TC", "TUVALU"=>"TV", "UGANDA"=>"UG", "UKRAINE"=>"UA", "UNITED ARAB EMIRATES"=>"AE", "UNITED KINGDOM"=>"GB", "UNITED STATES"=>"US", "UNITED STATES MINOR OUTLYING ISLANDS"=>"UM", "URUGUAY"=>"UY", "UZBEKISTAN"=>"UZ", "VANUATU"=>"VU", "VENEZUELA, BOLIVARIAN REPUBLIC OF"=>"VE", "VIET NAM"=>"VN", "VIRGIN ISLANDS, BRITISH"=>"VG", "VIRGIN ISLANDS, US"=>"VI", "WALLIS AND FUTUNA"=>"WF", "WESTERN SAHARA"=>"EH", "YEMEN"=>"YE", "ZAMBIA"=>"ZM", "ZIMBABWE"=>"ZW"); return $return; } /** * Calculates the offset from UTC for a given timezone * * @return integer */ function getTimeZoneOffset($timeZone) { $dateTimeZoneUTC = new DateTimeZone("UTC"); $dateTimeZoneCurrent = new DateTimeZone($timeZone); $dateTimeUTC = new DateTime("now",$dateTimeZoneUTC); $dateTimeCurrent = new DateTime("now",$dateTimeZoneCurrent); $offset = (($dateTimeZoneCurrent->getOffset($dateTimeUTC))/60); return $offset; } ?> <label for="timeZone">Timezone<br /> <select id="timeZone" name="timeZone"> <?php echo displayTimeZoneSelect("America/Toronto");?> </select> </label> 

Answer 16

Here's one that creates a multidimensional array sorted by offset and niceified name:

 function timezones() { $timezones = []; foreach (timezone_identifiers_list() as $timezone) { $datetime = new \DateTime('now', new DateTimeZone($timezone)); $timezones[] = [ 'sort' => str_replace(':', '', $datetime->format('P')), 'offset' => $datetime->format('P'), 'name' => str_replace('_', ' ', implode(', ', explode('/', $timezone))), 'timezone' => $timezone, ]; } usort($timezones, function($a, $b) { return $a['sort'] - $b['sort'] ?: strcmp($a['name'], $b['name']); }); return $timezones; } foreach (timezones() as $timezone) { echo '(UTC '.$timezone['offset'].') '.$timezone['name'].'<br>'; } 

Echos:

 (UTC -11:00) Pacific, Midway (UTC -11:00) Pacific, Niue (UTC -11:00) Pacific, Pago Pago (UTC -10:00) Pacific, Honolulu (UTC -10:00) Pacific, Johnston (UTC -10:00) Pacific, Rarotonga (UTC -10:00) Pacific, Tahiti (UTC -09:30) Pacific, Marquesas (UTC -09:00) America, Adak (UTC -09:00) Pacific, Gambier (UTC -08:00) America, Anchorage (UTC -08:00) America, Juneau ... 

Answer 17

 public static function tzList() { $tzMap = array(); $zones = \DateTimeZone::listIdentifiers(); foreach ($zones as $zone) { $tz = new \DateTimeZone($zone); $now = new \DateTime("utc", $tz); $diffInSeconds = $tz->getOffset($now); $hours = floor($diffInSeconds / 3600); $minutes = floor(($diffInSeconds % 3600) / 60); $tzMap[$zone] = sprintf("%+d", $hours) . ":" . sprintf("%02d", $minutes); } return $tzMap; } 

田田！ It's this simple. Gives you an array with the key as the PHP timezone and the value as a string in the format +-Hours:Minutes