search

Penggunaan fungsi 5GMT pada PHP

Ngày đăng: 08/09/2022
Trả lời: 0
Lượt xem: 141

Sebagian besar situs memerlukan cara untuk menampilkan tanggal di situs di zona waktu yang dipilih pengguna. Di bawah ini adalah dua daftar yang saya temukan dan kemudian satu metode menggunakan kelas bawaan PHP DateTime di PHP 5 

Show

Saya butuh bantuan untuk mengetahui yang mana dari ini akan menjadi yang terbaik untuk mencoba digunakan ketika mencoba untuk mendapatkan offset UTC dari pengguna pada saat mendaftar.

Satu:

Atau menggunakan PHP nilai yang ramah:

Atau hanya menggunakan PHP itu sendiri:

$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 );

Sepertinya yang terakhir akan menjadi yang paling aman karena akan tumbuh dengan PHP rilis yang digunakan. Anda juga dapat membalik array itu saat diperlukan untuk mengikat zona waktu dengan nama kota.

Saya akan melakukannya dalam PHP, kecuali saya akan menghindari melakukan preg_match 100 beberapa kali dan melakukan ini untuk menghasilkan daftar Anda.

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

Juga, saya akan menggunakan nama-nama PHP untuk 'zona waktu' dan melupakan offset GMT, yang akan berubah berdasarkan DST . Kode seperti itu di phpbb hanya dengan cara b/c mereka masih mendukung PHP4 dan tidak dapat mengandalkan pada objek DateTime atau DateTimeZone yang ada di sana.

Mengikuti contoh user210179 di atas, saya telah menulis fungsi berikut untuk membuat saya daftar semua zona waktu dengan offset mereka:

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;
}

Ini akan menghasilkan array yang terlihat seperti:

[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
…

Saat ini diurutkan berdasarkan offset, tetapi Anda dapat dengan mudah mengurutkan berdasarkan nama zona waktu dengan melakukan ksort() bukan asort().

Terlepas dari banyaknya jawaban yang ada, saya sudah membuat solusi lain untuk masalah ini. Pro implementasi saya adalah:

  • Daftar zona waktu dihasilkan secara dinamis, dan dengan demikian secara otomatis memperbarui kapan zona waktu mungkin berubah (dalam PHP).
  • Nama zona waktu di-prettified. Misalnya, "Amerika/St_Barthelemy" menjadi "Amerika, St. Barthelemy".
  • Zona waktu diurutkan berdasarkan offset dan nama. Jawaban Toland hanya mengurutkan pada offset, menghasilkan kelompok zona waktu yang tidak diurutkan dalam offset yang sama.
  • Informasi offset tidak diambil dari DateTimeZone::listAbbreviations, karena metode itu juga mengembalikan informasi zona waktu historis . Jawaban Favio memang menggunakan metode ini, yang menghasilkan offset (historis) yang salah
  • Daftar zona waktu hanya dihasilkan saat pertama kali diminta (dan 'di-cache' menggunakan variabel statis).

Ini kode lengkapnya:

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;
}

Dan inilah contoh outputnya

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
    ...
)

Saya akan melakukannya dengan kode berikut yang mirip dengan jawaban yang diterima (saya tahu kode tersebut dapat di refactored :)):

    $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');

}

Ini menghasilkan sesuatu seperti:

Harapan yang sedikit membantu dan/atau menginspirasi Anda untuk datang dengan sesuatu yang lebih baik.

Anda dapat membuat dropdown yang sangat mudah dari array ini (Ini adalah tugas yang memakan waktu untuk menggabungkan ini dan mengujinya). Kami sudah menggunakan daftar ini di beberapa aplikasi kami.

Adalah sangat penting untuk menyimpan pengidentifikasi zona waktu di database Anda dan bukan hanya zona waktu yang diimbangi seperti "GMT + 2", karena Waktu Musim Panas.

MEMPERBARUI

Saya memperbarui/memperbaiki daftar zona waktu (juga checkout: https://github.com/paptamas/timezones ):

 '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'
);
?>

Mengedit jawaban Tamas untuk menghapus semua entri "lain" yang menurut situs php.net seharusnya tidak digunakan lagi.

Mungkin tidak masalah, tetapi hanya mengikuti praktik terbaik. Lihat pemberitahuan di bagian bawah: http://fr2.php.net/manual/en/timezones.others.php

Juga, meskipun daftar ini memiliki Azores sebagai GMT -1, sebenarnya saya pikir itu sama (setidaknya kadang-kadang) dengan GMT, tetapi tidak yakin.

Mengedit untuk menawarkan ini dalam sql sehingga Anda dapat membuat daftar drop-down dalam bentuk dan meminta jawaban pengguna diikat ke indeks sebagai gantinya.

Mengedit lagi untuk menghapus ruang terdepan

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 [email protected]_CHARACTER_SET_CLIENT */;
/*!40101 SET [email protected]_CHARACTER_SET_RESULTS */;
/*!40101 SET [email protected]_COLLATION_CONNECTION */;

Berikut ini yang membuat array multidimensi yang diurutkan berdasarkan nama offset dan nice:

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'].'
';
}

Echos:

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

Menggunakan listAbbreviations () tidak masuk akal karena untuk setiap area ia mengembalikan semua offset berbeda yang secara historis digunakan di sana, bukan hanya yang saat ini. Sumber dasar yang tepat dari daftar ini jelas listIdentifiers (). 

Saya akan menghasilkan daftar hanya sekali dan menyimpannya untuk menghindari menghasilkannya untuk setiap permintaan. Saya bisa menyegarkannya sebulan sekali. 

Juga, saya bisa memasukkan semua info zona waktu ke skrip js terpisah dan membuat daftar pilih sendiri di sisi klien. Script js bisa di-cache juga, zona waktu tidak sering berubah. 

Selain itu, dengan menggunakan javascript di sisi klien, Anda dapat mengetahui waktu setempat saat ini, dan karenanya Anda dapat menemukan zona yang memiliki waktu yang sama sekarang (menit mungkin berbeda, jadi perbandingan harus perkiraan), dan tampilkan di bagian atas daftar, sehingga pengguna tidak perlu menelusuri semua 400 item. Anda juga dapat menampilkan zona yang berdekatan (+/- 1 jam) berikut. 

Saya tahu ini sudah memiliki jawaban tetapi saya melihat peluang untuk memperbaiki salah satu jawaban di sini. Toland H memposting beberapa kode yang sangat bagus yang melakukan persis apa yang ditanyakan oleh pertanyaan itu. Di bawah ini adalah versi singkat dan memperluas kode Toland H:

  • Fungsi ini menempatkan segala sesuatu di tag opsi untuk Anda. Gema lagi apa yang kembali di antara tag pilih Anda.
  • Perbaikan Besar: Daftar ini diurutkan pertama berdasarkan benua dan disusun dalam kelompok opsi berdasarkan benua. Jadikan sangat user friendly bagi pengunjung yang memilih zona waktu mereka.
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 .= '';
$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 .= '';
}
$holder .= '';
++$i;
}
return $holder;
}
echo "";

Maka yang perlu Anda lakukan adalah mengulang apa yang dikembalikan di antara tag pilih html Anda. Anda akan mendapatkan daftar pilih seperti ini:

----- 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

Dan seterusnya...

Fungsi PHP ini melakukan Pekerjaan untuk Anda dan mengembalikan array:

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

Fungsi PHP ini mengembalikan array dari semua Zona Waktu yang ada termasuk Offset:

Gunakan misalnya seperti ini:

print_r(time_zonelist());

Varian 1

Hasil: 

...
[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 
...

Kode:

$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);

Varian 2

Hasil:

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
        )
...

Kode:

$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);

Dalam beberapa proyek benar-benar tidak masuk akal memiliki zona waktu terperinci dari Afrika, Eropa atau Pasifik. Jadi ini adalah versi singkatnya

$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 ""

ini akan menghasilkan pilih seperti di bawah ini: 

 

Penggunaan fungsi 5GMT pada PHP

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;
}

Tada! Sesederhana ini. Memberi Anda array dengan kunci sebagai zona waktu PHP dan nilai sebagai string dalam format + -Jam: Menit

Saya membuat kelas PHP untuk ini dengan plugin jQuery yang sesuai. Saya telah membuka-sumbernya di https://github.com/peterjtracey/timezoneWidget - kode PHP terinspirasi oleh jawaban stackoverflow lain, tapi saya rasa jauh lebih elegan. Plugin jQuery memberikan antarmuka yang bagus untuk memilih zona waktu.

Saya ingin memiliki sesuatu yang lebih sederhana untuk pengguna saya, cara Google melakukannya ..

$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);
    }   
}

Ini memberi saya array yang dikelompokkan berdasarkan negara:

["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"
    }
  }

Yang berarti sekarang saya dapat melakukan sesuatu seperti di bawah ini (tentu saja dengan beberapa tipuan javaScript):

Penggunaan fungsi 5GMT pada PHP

$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);

Bagi mereka yang menggunakan CodeIgniter, ada fungsi built-in Date Helper disebut timezone_menu . Ini:

$this->load->helper('date');
echo timezone_menu('GMT', 'form-control', 'dropdown-name', ['id' => 'ci-timezone']);

Hasilkan keluaran berikut:

Saya melakukan ini:

php -r "echo json_encode(array_combine(DateTimeZone::listIdentifiers(DateTimeZone::ALL), DateTimeZone::listIdentifiers(DateTimeZone::ALL)));" > list-of-timezones.json

Inilah kelas yang saya kumpulkan, mencampur apa yang saya pikir merupakan saran terbaik di sini, dan dengan Carbon sebagai ketergantungan:

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);
    }
}

Anda cukup Timezone:all(), dan itu memberi Anda sebuah array dalam format UTC-5:00 (America, New York), sehingga Anda bisa dengan mudah menampilkan bidang pilih di frontend Anda.

opsi pertama akan memungkinkan Anda mengambil nilai dari $ _POST ['whateveryoucalltheselect'] dan menambahkannya ke UTC. atau bahkan menyimpan nilai itu dan kemudian selalu memanggil UTC + userTZseting kapan pun Anda membutuhkannya. sepertinya paling mudah bagi saya. opsi terakhir akan jauh lebih berharga jika zona waktu sering berubah.

Setelah mencoba semua solusi yang disajikan di sini dan tidak puas, saya telah menemukan skrip yang sesuai dengan kebutuhan saya dan lebih ramah pengguna. Sebagai catatan, saya akan menyimpannya sebagai solusi yang memungkinkan. Saya suka solusi salin/tempel :) 

Script mengembalikan pilihan dengan zona waktu apa pun yang Anda inginkan terpilih sebelumnya.

 

Penggunaan fungsi 5GMT pada PHP

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

= 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 .= '' . 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;
}
?>

Tidak satupun dari mereka. Alih-alih siapkan array di PHP dengan zona waktu itu. Seperti

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

atau 

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

dan seterusnya. Kemudian buat formulir berdasarkan array ini:

foreach ($arr as $k => $v)
   $str .= "";

Dan kemudian Anda dapat dengan mudah beralih dengan format yang berbeda hanya dengan modifikasi kode di baris di atas. Validasi juga akan jauh lebih mudah dan tidak memerlukan ekspresi reguler. Bandingkan saja nilai yang dikirim oleh POST atau DAPATKAN dengan array. Sekarang mudah untuk menetapkan $ arr [$ value_sent_by_form] [0] memiliki nilai kompatibel PHP sementara $ arr [$ value_sent_by_form] [1] nilai ramah pengguna.

Lihat contoh ini juga

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() . '
');
                //what to do in catch ? , nothing just relax
            }
        }

        ksort($o);

        return $o;
    } 

    $o = get_timezones();
    ?>

kode php Jurnal sekuensing DNA

Bài Viết Liên Quan

Cara menggunakan save image temporary python
Cara menggunakan save image temporary python

kode python
Ekstensi kode studio visual html css
Ekstensi kode studio visual html css

kode html
Https notfound PHP
Https notfound PHP

Cara menggunakan integer to date python
Cara menggunakan integer to date python

kode python
Python mengganti karakter dalam file teks
Python mengganti karakter dalam file teks

kode python
Cara mengecek nomor npwp yang hilang
Cara mengecek nomor npwp yang hilang

Bagaimana Anda membuat diagram di mysql?
Bagaimana Anda membuat diagram di mysql?

kode mysql
Cara menggunakan contoh perulangan while php
Cara menggunakan contoh perulangan while php

kode php
Marksheet code in JavaScript
Marksheet code in JavaScript

Cara menggunakan perintah dasar python
Cara menggunakan perintah dasar python

kode python
Cara menggunakan baris ungroup di excel
Cara menggunakan baris ungroup di excel

kode excel
Apakah bisa transfer dari OVO ke GoPay?
Apakah bisa transfer dari OVO ke GoPay?

Cara menghapus squarespace javascript yang tidak terpakai
Cara menghapus squarespace javascript yang tidak terpakai

kode javascript
Bagaimana Anda mengarahkan ke halaman lain di html setelah mengirimkan?
Bagaimana Anda mengarahkan ke halaman lain di html setelah mengirimkan?

kode html
Scrape website to Excel
Scrape website to Excel

Cara menggunakan php max_input_vars not updating
Cara menggunakan php max_input_vars not updating

kode php
Cara menggunakan website forum php
Cara menggunakan website forum php

kode php
Cara aktivasi kartu BRIZZI di ATM BRI
Cara aktivasi kartu BRIZZI di ATM BRI

Cara menggunakan const javascript adalah
Cara menggunakan const javascript adalah

kode javascript
Cara menggunakan mysql aplikasi apa?
Cara menggunakan mysql aplikasi apa?

kode mysql

Có thể bạn quan tâm

Google Sheets difference between two columns
1 năm trước . bởi RepublicanNetworking
Cara mengunduh kamus dengan python
1 năm trước . bởi ChunkySending
Apa perbedaan list dan array pada python?
1 năm trước . bởi DisastrousMaple
How do I push data from one Excel workbook to another?
1 năm trước . bởi SorrowfulCountryman
Cara menggunakan raise vs return python
1 năm trước . bởi SatisfyingInstruction
Cara konfigurasi mysql di xampp
1 năm trước . bởi BindingMortality
Spreadsheet odoo
1 năm trước . bởi LastingMahogany
Cara mengubah server phpmyadmin
1 năm trước . bởi HandmadeWaitress
Cara membuat paragraf di css
1 năm trước . bởi IndeterminateIndicator
Cara menggunakan perbedaan laravel dan php
1 năm trước . bởi TeemingAesthetics

Xem Nhiều

Chúng tôi

Điều khoản

Trợ giúp

Mạng xã hội

DMCA.com Protection Status
Bản quyền © 2021 Inc.