使用PHP生成时区下拉列表

Question

大多数网站需要某种方式在用户首选时区显示网站上的日期.下面是我找到的两个列表,然后是PHP 5中使用内置PHP DateTime类的一个方法.

我需要帮助知道在尝试从寄存器上获取用户的UTC偏移量时,哪些是最好尝试使用的.

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 );

看起来最后一个是最安全的,因为它会随着PHP版本的使用而增长.您还可以在需要时将时区转换为城市名称.

Answer 1

我会用PHP来做,除了我会避免做一些preg_match 100并执行此操作来生成列表.

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

此外,我会使用PHP的名称作为'timezones'而忘记GMT偏移,这将根据DST进行更改.像phpbb中那样的代码只是那样b/c它们仍然支持PHP4并且不能依赖于那里的DateTime或DateTimeZone对象.

Answer 2

按照上面的user210179示例,我编写了以下函数来生成一个包含所有偏移量的时区列表:

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;
}

这将生成一个类似于下列的数组:

[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
…

它目前按偏移排序,但您可以通过执行a ksort()而不是按时区名称轻松排序asort().

Answer 3

尽管存在大量现有答案,但我已经解决了这个问题.我的实施专家是:

• 时区列表是动态生成的,因此在时区可能发生变化时自动更新(在PHP中).
• 时区名称被美化.例如,"America/St_Barthelemy"成为"America,St.Barthelemy".
• 时区按偏移量和名称排序.Toland的答案只对偏移量进行排序,导致同一偏移量内的未分类时区组.
• 不从中检索偏移信息DateTimeZone::listAbbreviations,因为该方法也返回历史时区信息.Favio的答案确实使用了这种方法,导致错误的(历史)偏移
• 时区列表仅在首次请求时生成(并使用静态变量"缓存").

这是完整的代码:

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;
}

这是输出的一个例子

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

我会用下面的代码来做,它类似于接受的答案(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');
                $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');

}

它产生如下:

<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>

希望有所帮助和/或激励你带来更好的东西.

Answer 5

你可以从这个数组中创建一个非常简单的下拉列表(把它放在一起测试它是一项耗时的任务).我们已在某些应用中使用此列表.

这是非常重要的存储时区标识符在数据库中,而不仅仅是像时区"GMT + 2"偏移,因为夏令时间的.

UPDATE

我更新/更正了时区列表(也是结帐: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

在某些项目中，拥有非洲、欧洲或太平洋的详细时区确实没有意义。所以这是一个简短的版本

$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>" 

这将生成如下选择：

Answer 7

这是创建一个按偏移量和名称排序的多维数组的数组：

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>';
}

回声：

(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
...