PHPを使用してタイムゾーンのドロップダウンリストを生成する
ほとんどのサイトでは、ユーザーの好みのタイムゾーンでサイトの日付を表示する何らかの方法が必要です。以下は 2つのリスト that 見つかった それから1つのメソッド 組み込みPHP DateTimeを使用 PHP 5。
登録時にユーザーからUTCオフセットを取得しようとするときに、これらのうちどれを使用するのが最善かを知るのに助けが必要です。
1：
<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 & 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>
または、PHPのわかりやすい値を使用します。
<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>
または、PHP自体を使用します。
$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 );
PHPリリースが使用されるにつれて成長するため、最後のものが最も安全であると思われます。また、タイムゾーンを都市名に関連付ける必要があるときに、その配列を反転させることもできます。
私はPHPでそれを行いますが、preg_match 100を何回か避けて、リストを生成するためにこれを行います。
$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);
また、「タイムゾーン」にPHPの名前を使用し、GMTオフセットは忘れますが、これはDSTに基づいて変更されます。 phpbbでのそのようなコードは、PHP/PHPをまだサポートしているため、DateTimeまたはDateTimeZoneオブジェクトに依存することはできません。
上記のuser210179の例に従って、すべてのタイムゾーンとそのオフセットのリストを生成する次の関数を作成しました。
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;
}
これにより、次のような配列が生成されます。
[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
…
現在はオフセットでソートされていますが、ksort()の代わりにasort()を実行することにより、タイムゾーン名で簡単にソートできます。
既存の回答の数にもかかわらず、私はこの問題のさらに別の解決策を作成しました。私の実装の長所は次のとおりです。
- タイムゾーンのリストは動的に生成されるため、タイムゾーンが変更される可能性がある場合（PHPで）自動的に更新されます。
- タイムゾーン名が優先されます。たとえば、「America/St_Barthelemy」は「America、St. Barthelemy」になります。
- タイムゾーンは、オフセットと名前でソートされます。 Tolandの答え オフセットでのみソートされ、同じオフセット内のタイムゾーンのソートされていないグループになります。
- オフセット情報は
DateTimeZone::listAbbreviationsから取得されません。このメソッドは historical timezone information も返すためです。 Favioの答え はこのメソッドを使用しますが、これは誤った（履歴）オフセットをもたらします - タイムゾーンのリストは、最初に要求されたときにのみ生成されます（静的変数を使用して「キャッシュ」されます）。
完全なコードは次のとおりです。
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;
}
そして、これが出力の例です
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
...
)
私は受け入れられた答えに似ている次のコードでそれをします（コードがリファクタリングされる可能性があることは知っています:)）
$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');
$offset[] = $zone['offset'] = $z->getOffset($c);
$data[] = $zone;
$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');
}
次のようなものが生成されます。
<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>
それが少し助けになり、そして/またはあなたがより良い何かを手に入れるように促すことを願っています。
この配列から非常に簡単なドロップダウンを作成できます（これを組み合わせてテストするのは時間のかかる作業でした）。一部のアプリでは既にこのリストを使用しています。
夏時間のために、「GMT + 2」のようなタイムゾーンオフセットだけでなく、タイムゾーン識別子をデータベースに保存することは、非常に重要です。
更新
タイムゾーンリストを更新/修正しました（チェックアウト： 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 & 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 & Canada)' => 'US/Mountain',
'(GMT-06:00) Central America' => 'America/Managua',
'(GMT-06:00) Central Time (US & 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 & 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'
);
?>
Tamasの回答を編集して、php.netサイトで使用すべきではないという「その他」のエントリをすべて削除します。
おそらく重要ではありませんが、ベストプラクティスに従うだけです。下部の通知を参照してください： http://fr2.php.net/manual/en/timezones.others.php
また、このリストにはGMT -1のアゾレス諸島がありますが、実際にはGMTと同じ（少なくとも時々）であると思いますが、確かではありません。
これをSQLで提供するように編集すると、フォームにドロップダウンリストを作成し、代わりにユーザーの回答をインデックスに関連付けることができます。
再度編集して先頭のスペースを削除する
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 */;
以下は、オフセットと適切な名前でソートされた多次元配列を作成するものです。
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>';
}
エコー：
(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
...
ListAbbreviations（）を使用しても、現在のオフセットだけでなく、過去に使用されていたすべての異なるオフセットがすべてのエリアで返されるため、意味がありません。リストの正しいベースソースは間違いなくlistIdentifiers（）です。
リストを1回だけ生成して保存し、リクエストごとにリストを生成しないようにします。月に一度更新できます。
また、すべてのタイムゾーン情報を個別のjs-scriptに入れて、クライアント側で選択リスト自体を生成することもできます。 js-scriptもキャッシュできますが、タイムゾーンは頻繁に変更されません。
また、クライアント側でjavascriptを使用すると、現在の現地時間を知ることができるため、現在同じ時刻のゾーンを見つけることができ（分が異なる場合があるため、比較はおおよそである必要があります）、それらを上部に表示しますリスト。したがって、ユーザーは400アイテムすべてをスクロールする必要はありません。隣接するゾーン（+/- 1時間）を表示することもできます。
これにはすでに答えがありますが、ここで答えの1つを改善する機会を見ました。 Toland Hは、質問がまさに求めていたものを正確に実行する非常に優れたコードを投稿しました。以下は、Toland Hのコードの短縮および拡張バージョンです。
- この関数はすべてをオプションタグに入れます。選択タグ間で返される内容をエコーアウトするだけです。
- 大幅な改善：リストは最初に大陸ごとにソートされ、大陸に基づいてオプショングループに編成されます。訪問者がタイムゾーンを選択する際に非常に使いやすくなります。
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>";
あとは、html selectタグの間に返される内容をエコーアウトするだけです。次のような選択リストが表示されます。
----- 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
等々...
このPHP関数は、ジョブを実行して配列を返します：
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;
}
このPHP関数は、オフセットを含むすべての既存のタイムゾーンの配列を返します：
それを使用しますこのような：
print_r(time_zonelist());
$timezone = array(
'Pacific/Midway' => '(GMT-11:00) Midway Island, Samoa',
'America/Adak' => '(GMT-10:00) Hawaii-Aleutian',
'Etc/GMT+10' => '(GMT-10:00) Hawaii',
'Pacific/Marquesas' => '(GMT-09:30) Marquesas Islands',
'Pacific/Gambier' => '(GMT-09:00) Gambier Islands',
'America/Anchorage' => '(GMT-09:00) Alaska',
'America/Ensenada' => '(GMT-08:00) Tijuana, Baja California',
'Etc/GMT+8' => '(GMT-08:00) Pitcairn Islands',
'America/Los_Angeles' => '(GMT-08:00) Pacific Time (US & Canada)',
'America/Denver' => '(GMT-07:00) Mountain Time (US & Canada)',
'America/Chihuahua' => '(GMT-07:00) Chihuahua, La Paz, Mazatlan',
'America/Dawson_Creek' => '(GMT-07:00) Arizona',
'America/Belize' => '(GMT-06:00) Saskatchewan, Central America',
'America/Cancun' => '(GMT-06:00) Guadalajara, Mexico City, Monterrey',
'Chile/EasterIsland' => '(GMT-06:00) Easter Island',
'America/Chicago' => '(GMT-06:00) Central Time (US & Canada)',
'America/New_York' => '(GMT-05:00) Eastern Time (US & Canada)',
'America/Havana' => '(GMT-05:00) Cuba',
'America/Bogota' => '(GMT-05:00) Bogota, Lima, Quito, Rio Branco',
'America/Caracas' => '(GMT-04:30) Caracas',
'America/Santiago' => '(GMT-04:00) Santiago',
'America/La_Paz' => '(GMT-04:00) La Paz',
'Atlantic/Stanley' => '(GMT-04:00) Faukland Islands',
'America/Campo_Grande' => '(GMT-04:00) Brazil',
'America/Goose_Bay' => '(GMT-04:00) Atlantic Time (Goose Bay)',
'America/Glace_Bay' => '(GMT-04:00) Atlantic Time (Canada)',
'America/St_Johns' => '(GMT-03:30) Newfoundland',
'America/Araguaina' => '(GMT-03:00) UTC-3',
'America/Montevideo' => '(GMT-03:00) Montevideo',
'America/Miquelon' => '(GMT-03:00) Miquelon, St. Pierre',
'America/Godthab' => '(GMT-03:00) Greenland',
'America/Argentina/Buenos_Aires' => '(GMT-03:00) Buenos Aires',
'America/Sao_Paulo' => '(GMT-03:00) Brasilia',
'America/Noronha' => '(GMT-02:00) Mid-Atlantic',
'Atlantic/Cape_Verde' => '(GMT-01:00) Cape Verde Is.',
'Atlantic/Azores' => '(GMT-01:00) Azores',
'Europe/Belfast' => '(GMT) Greenwich Mean Time : Belfast',
'Europe/Dublin' => '(GMT) Greenwich Mean Time : Dublin',
'Europe/Lisbon' => '(GMT) Greenwich Mean Time : Lisbon',
'Europe/London' => '(GMT) Greenwich Mean Time : London',
'Africa/Abidjan' => '(GMT) Monrovia, Reykjavik',
'Europe/Amsterdam' => '(GMT+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna',
'Europe/Belgrade' => '(GMT+01:00) Belgrade, Bratislava, Budapest, Ljubljana, Prague',
'Europe/Brussels' => '(GMT+01:00) Brussels, Copenhagen, Madrid, Paris',
'Africa/Algiers' => '(GMT+01:00) West Central Africa',
'Africa/Windhoek' => '(GMT+01:00) Windhoek',
'Asia/Beirut' => '(GMT+02:00) Beirut',
'Africa/Cairo' => '(GMT+02:00) Cairo',
'Asia/Gaza' => '(GMT+02:00) Gaza',
'Africa/Blantyre' => '(GMT+02:00) Harare, Pretoria',
'Asia/Jerusalem' => '(GMT+02:00) Jerusalem',
'Europe/Minsk' => '(GMT+02:00) Minsk',
'Asia/Damascus' => '(GMT+02:00) Syria',
'Europe/Moscow' => '(GMT+03:00) Moscow, St. Petersburg, Volgograd',
'Africa/Addis_Ababa' => '(GMT+03:00) Nairobi',
'Asia/Tehran' => '(GMT+03:30) Tehran',
'Asia/Dubai' => '(GMT+04:00) Abu Dhabi, Muscat',
'Asia/Yerevan' => '(GMT+04:00) Yerevan',
'Asia/Kabul' => '(GMT+04:30) Kabul',
'Asia/Yekaterinburg' => '(GMT+05:00) Ekaterinburg',
'Asia/Tashkent' => '(GMT+05:00) Tashkent',
'Asia/Kolkata' => '(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi',
'Asia/Katmandu' => '(GMT+05:45) Kathmandu',
'Asia/Dhaka' => '(GMT+06:00) Astana, Dhaka',
'Asia/Novosibirsk' => '(GMT+06:00) Novosibirsk',
'Asia/Rangoon' => '(GMT+06:30) Yangon (Rangoon)',
'Asia/Bangkok' => '(GMT+07:00) Bangkok, Hanoi, Jakarta',
'Asia/Krasnoyarsk' => '(GMT+07:00) Krasnoyarsk',
'Asia/Hong_Kong' => '(GMT+08:00) Beijing, Chongqing, Hong Kong, Urumqi',
'Asia/Irkutsk' => '(GMT+08:00) Irkutsk, Ulaan Bataar',
'Australia/Perth' => '(GMT+08:00) Perth',
'Australia/Eucla' => '(GMT+08:45) Eucla',
'Asia/Tokyo' => '(GMT+09:00) Osaka, Sapporo, Tokyo',
'Asia/Seoul' => '(GMT+09:00) Seoul',
'Asia/Yakutsk' => '(GMT+09:00) Yakutsk',
'Australia/Adelaide' => '(GMT+09:30) Adelaide',
'Australia/Darwin' => '(GMT+09:30) Darwin',
'Australia/Brisbane' => '(GMT+10:00) Brisbane',
'Australia/Hobart' => '(GMT+10:00) Hobart',
'Asia/Vladivostok' => '(GMT+10:00) Vladivostok',
'Australia/Lord_Howe' => '(GMT+10:30) Lord Howe Island',
'Etc/GMT-11' => '(GMT+11:00) Solomon Is., New Caledonia',
'Asia/Magadan' => '(GMT+11:00) Magadan',
'Pacific/Norfolk' => '(GMT+11:30) Norfolk Island',
'Asia/Anadyr' => '(GMT+12:00) Anadyr, Kamchatka',
'Pacific/Auckland' => '(GMT+12:00) Auckland, Wellington',
'Etc/GMT-12' => '(GMT+12:00) Fiji, Kamchatka, Marshall Is.',
'Pacific/Chatham' => '(GMT+12:45) Chatham Islands',
'Pacific/Tongatapu' => '(GMT+13:00) Nukualofa',
'Pacific/Kiritimati' => '(GMT+14:00) Kiritimati',
date_default_timezone_set($timezone);
バリアント1
結果：
...
[America/Scoresbysund] => (UTC+00:00) America/Scoresbysund
[Atlantic/Azores] => (UTC+00:00) Atlantic/Azores
[Atlantic/Reykjavik] => (UTC+00:00) Atlantic/Reykjavik
[Atlantic/St_Helena] => (UTC+00:00) Atlantic/St_Helena
[UTC] => (UTC+00:00) UTC
[Africa/Algiers] => (UTC+01:00) Africa/Algiers
[Africa/Bangui] => (UTC+01:00) Africa/Bangui
...
コード：
$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);
$result = [];
foreach ($tzlist as $timezone) {
$offset = (new DateTimeZone($timezone))->getOffset(new DateTime);
$offsetPrefix = $offset < 0 ? '-' : '+';
$offsetFormatted = gmdate('H:i', abs($offset));
$utcOffset = "(UTC$offsetPrefix$offsetFormatted)";
$result[$timezone] = "${$utcOffset} $timezone";
}
asort($result);
print_r($result);
バリアント2
結果：
Array
(
[0] => Array
(
[value] => Africa/Abidjan
[offset] => +00:00
[text] => (UTC+00:00) Africa/Abidjan
)
[1] => Array
(
[value] => Africa/Conakry
[offset] => +00:00
[text] => (UTC+00:00) Africa/Conakry
)
...
コード：
$tzlist = DateTimeZone::listIdentifiers(DateTimeZone::ALL);
$result = [];
foreach ($tzlist as $timezone) {
$offset = (new DateTimeZone($timezone))->getOffset(new DateTime);
$offsetPrefix = $offset < 0 ? '-' : '+';
$offsetFormatted = gmdate('H:i', abs($offset));
$utcOffset = "UTC$offsetPrefix$offsetFormatted";
$result[] = [
'value' => $timezone,
'offset' => "$offsetPrefix$offsetFormatted"
// "text" => "($utcOffset) $timezone"
];
}
usort($result, function ($a, $b) { return strcmp($a["offset"], $b["offset"]); });
print_r($result);
一部のプロジェクトでは、アフリカ、ヨーロッパ、または太平洋の詳細なタイムゾーンを持つことは実際には意味がありません。ここに短いバージョンがあります
$timezoneTable = array(
"-12" => "(GMT -12:00) Eniwetok, Kwajalein",
"-11" => "(GMT -11:00) Midway Island, Samoa",
"-10" => "(GMT -10:00) Hawaii",
"-9" => "(GMT -9:00) Alaska",
"-8" => "(GMT -8:00) Pacific Time (US & Canada)",
"-7" => "(GMT -7:00) Mountain Time (US & Canada)",
"-6" => "(GMT -6:00) Central Time (US & Canada), Mexico City",
"-5" => "(GMT -5:00) Eastern Time (US & Canada), Bogota, Lima",
"-4" => "(GMT -4:00) Atlantic Time (Canada), Caracas, La Paz",
"-3.5" => "(GMT -3:30) Newfoundland",
"-3" => "(GMT -3:00) Brazil, Buenos Aires, Georgetown",
"-2" => "(GMT -2:00) Mid-Atlantic",
"-1" => "(GMT -1:00) Azores, Cape Verde Islands",
"0" => "(GMT) Western Europe Time, London, Lisbon, Casablanca",
"1" => "(GMT +1:00) Brussels, Copenhagen, Madrid, Paris",
"2" => "(GMT +2:00) Kaliningrad, South Africa",
"3" => "(GMT +3:00) Baghdad, Riyadh, Moscow, St. Petersburg",
"3.5" => "(GMT +3:30) Tehran",
"4" => "(GMT +4:00) Abu Dhabi, Muscat, Baku, Tbilisi",
"4.5" => "(GMT +4:30) Kabul",
"5" => "(GMT +5:00) Ekaterinburg, Islamabad, Karachi, Tashkent",
"5.5" => "(GMT +5:30) Bombay, Calcutta, Madras, New Delhi",
"6" => "(GMT +6:00) Almaty, Dhaka, Colombo",
"7" => "(GMT +7:00) Bangkok, Hanoi, Jakarta",
"8" => "(GMT +8:00) Beijing, Perth, Singapore, Hong Kong",
"9" => "(GMT +9:00) Tokyo, Seoul, Osaka, Sapporo, Yakutsk",
"9.5" => "(GMT +9:30) Adelaide, Darwin",
"10" => "(GMT +10:00) Eastern Australia, Guam, Vladivostok",
"11" => "(GMT +11:00) Magadan, Solomon Islands, New Caledonia",
"12" => "(GMT +12:00) Auckland, Wellington, Fiji, Kamchatka"
);
echo "<select>";
foreach ($timezoneTable as $k => $v){
$sel = ($k==-5)?" selected":"";
echo "<option value='".$k."'".$sel.">".$v."</option>";
}
echo "</select>"
これにより、次のように選択が生成されます。
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;
}
多田！これは簡単です。キーをPHPタイムゾーンとして、値を+ -Hours：Minutes形式の文字列として配列を提供します
このために、対応するjQueryプラグインを使用してPHPクラスを作成しました。私はそれを https://github.com/peterjtracey/timezoneWidget でオープンソース化しました-PHPコードは別のstackoverflowの答えに触発されていますが、もっとエレガントだと思います。 jQueryプラグインは、タイムゾーンを選択するための優れたインターフェースを提供します。
Googleのように、ユーザーにとってもっとシンプルなものが欲しかった。
$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" => "U.S. 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);
}
}
これにより、国別にグループ化された配列が得られます。
["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"
}
}
これは、以下のようなことができるようになったことを意味します（もちろん、javaScriptのトリックを使用）： 
CodeIgniterを使用している場合、組み込みの Date Helper function と呼ばれる timezone_menu があります。これら：
$this->load->helper('date');
echo timezone_menu('GMT', 'form-control', 'dropdown-name', ['id' => 'ci-timezone']);
次の出力を生成します。
<select name="dropdown-name" class="form-control" id="ci-timezone">
<option value="UM12">(UTC -12:00) Baker/Howland Island</option>
<option value="UM11">(UTC -11:00) Niue</option>
<option value="UM10">(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti</option>
<option value="UM95">(UTC -9:30) Marquesas Islands</option>
<option value="UM9">(UTC -9:00) Alaska Standard Time, Gambier Islands</option>
<option value="UM8">(UTC -8:00) Pacific Standard Time, Clipperton Island</option>
<option value="UM7">(UTC -7:00) Mountain Standard Time</option>
<option value="UM6">(UTC -6:00) Central Standard Time</option>
<option value="UM5">(UTC -5:00) Eastern Standard Time, Western Caribbean Standard Time</option>
<option value="UM45">(UTC -4:30) Venezuelan Standard Time</option>
<option value="UM4">(UTC -4:00) Atlantic Standard Time, Eastern Caribbean Standard Time</option>
<option value="UM35">(UTC -3:30) Newfoundland Standard Time</option>
<option value="UM3">(UTC -3:00) Argentina, Brazil, French Guiana, Uruguay</option>
<option value="UM2">(UTC -2:00) South Georgia/South Sandwich Islands</option>
<option value="UM1">(UTC -1:00) Azores, Cape Verde Islands</option>
<option value="UTC" selected="selected">(UTC) Greenwich Mean Time, Western European Time</option>
<option value="UP1">(UTC +1:00) Central European Time, West Africa Time</option>
<option value="UP2">(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time</option>
<option value="UP3">(UTC +3:00) Moscow Time, East Africa Time, Arabia Standard Time</option>
<option value="UP35">(UTC +3:30) Iran Standard Time</option>
<option value="UP4">(UTC +4:00) Azerbaijan Standard Time, Samara Time</option>
<option value="UP45">(UTC +4:30) Afghanistan</option>
<option value="UP5">(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time</option>
<option value="UP55">(UTC +5:30) Indian Standard Time, Sri Lanka Time</option>
<option value="UP575">(UTC +5:45) Nepal Time</option>
<option value="UP6">(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time</option>
<option value="UP65">(UTC +6:30) Cocos Islands, Myanmar</option>
<option value="UP7">(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam</option>
<option value="UP8">(UTC +8:00) Australian Western Standard Time, Beijing Time, Irkutsk Time</option>
<option value="UP875">(UTC +8:45) Australian Central Western Standard Time</option>
<option value="UP9">(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk Time</option>
<option value="UP95">(UTC +9:30) Australian Central Standard Time</option>
<option value="UP10">(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time</option>
<option value="UP105">(UTC +10:30) Lord Howe Island</option>
<option value="UP11">(UTC +11:00) Srednekolymsk Time, Solomon Islands, Vanuatu</option>
<option value="UP115">(UTC +11:30) Norfolk Island</option>
<option value="UP12">(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time</option>
<option value="UP1275">(UTC +12:45) Chatham Islands Standard Time</option>
<option value="UP13">(UTC +13:00) Samoa Time Zone, Phoenix Islands Time, Tonga</option>
<option value="UP14">(UTC +14:00) Line Islands</option>
</select>
これは私がしました：
php -r "echo json_encode(array_combine(DateTimeZone::listIdentifiers(DateTimeZone::ALL), DateTimeZone::listIdentifiers(DateTimeZone::ALL)));" > list-of-timezones.json
ここに私がまとめたクラスがあり、私がここですべての提案の中で最高だと思ったものと、依存関係としてのCarbonとを混合しています：
namespace App\Support;
use Carbon\Carbon;
use DateTimeZone;
class Timezone
{
protected static $timezones;
public static function all(): array
{
if (static::$timezones) {
return static::$timezones;
}
$offsets = [];
$timezones = [];
foreach (DateTimeZone::listIdentifiers() as $timezone) {
$offsets[] = $offset = Carbon::now()->timezone($timezone)->offset;
$timezones[$timezone] = static::formatTimezoneDisplay($timezone, $offset);
array_multisort($offsets, $timezones);
}
return static::$timezones = $timezones;
}
protected static function formatTimezoneDisplay(string $timezone, string $offset): string
{
return static::formatOffset($offset) . ' (' . static::formatTimezone($timezone) . ')';
}
protected static function formatOffset(string $offset): string
{
if (!$offset) {
return 'UTC±00:00';
}
$hours = intval($offset / 3600);
$minutes = abs(intval($offset % 3600 / 60));
return 'UTC' . sprintf('%+03d:%02d', $hours, $minutes);
}
protected static function formatTimezone(string $timezone): string
{
return str_replace(['/', '_', 'St '], [', ', ' ', 'St. '], $timezone);
}
}
単にTimezone:all()するだけで、UTC-5:00 (America, New York)の形式で配列が取得されるため、フロントエンドに選択フィールドを簡単に表示できます。
最初のオプションでは、$ _ POST ['whateveryoucalltheselect']から値を取得してUTCに追加できます。またはその値を保存し、後で必要になったときに常にUTC + userTZsettingを呼び出します。私にとって最も簡単なようです。タイムゾーンが頻繁に変更される場合、最後のオプションははるかに価値があります。
ここに提示されているすべてのソリューションを試してみて満足していませんが、ニーズに合ったスクリプトが見つかりました。記録のために、可能な解決策として保存します。コピー/貼り付けソリューションが大好き:)
スクリプトは、事前に選択したいタイムゾーンでselectを返します。
ソース： 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, U.S."=>"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>
そのなかで何も。代わりに、それらのタイムゾーンでPHPに配列を準備します。好む
$arr[0] = "(GMT+02:00) Harare, Pretoria";
$arr[1] = "(GMT+03:00) Jerusalem";
または
$arr[0] = array("America/Campo_Grande", "(GMT+02:00) Harare, Pretoria");
$arr[1] = array("America/Israel", "(GMT+03:00) Jerusalem");
等々。次に、この配列に基づいてフォームを生成します。
foreach ($arr as $k => $v)
$str .= "<option value=$k>$v[1]</option>";
そして、上記の行でコードを修正するだけで、さまざまな形式に簡単に切り替えることができます。また、検証ははるかに簡単になり、正規表現を必要としません。 POSTまたはGETによって送信された値を配列と比較するだけです。 $ arr [$ value_sent_by_form] [0]がPHP互換値を保持し、$ arr [$ value_sent_by_form] [1]が使いやすい値を設定するのは簡単です。
この例を参照してください
<?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>