PHP Timezone List
php, time, timezone
Solution
Take my array of time zones, which I made specially for select element. It is associated array where key is PHP time zone and value is human representation. This is it:
$timezones = array(
'Pacific/Midway' => "(GMT-11:00) Midway Island",
'US/Samoa' => "(GMT-11:00) Samoa",
'US/Hawaii' => "(GMT-10:00) Hawaii",
'US/Alaska' => "(GMT-09:00) Alaska",
'US/Pacific' => "(GMT-08:00) Pacific Time (US & Canada)",
'America/Tijuana' => "(GMT-08:00) Tijuana",
'US/Arizona' => "(GMT-07:00) Arizona",
'US/Mountain' => "(GMT-07:00) Mountain Time (US & Canada)",
'America/Chihuahua' => "(GMT-07:00) Chihuahua",
'America/Mazatlan' => "(GMT-07:00) Mazatlan",
'America/Mexico_City' => "(GMT-06:00) Mexico City",
'America/Monterrey' => "(GMT-06:00) Monterrey",
'Canada/Saskatchewan' => "(GMT-06:00) Saskatchewan",
'US/Central' => "(GMT-06:00) Central Time (US & Canada)",
'US/Eastern' => "(GMT-05:00) Eastern Time (US & Canada)",
'US/East-Indiana' => "(GMT-05:00) Indiana (East)",
'America/Bogota' => "(GMT-05:00) Bogota",
'America/Lima' => "(GMT-05:00) Lima",
'America/Caracas' => "(GMT-04:30) Caracas",
'Canada/Atlantic' => "(GMT-04:00) Atlantic Time (Canada)",
'America/La_Paz' => "(GMT-04:00) La Paz",
'America/Santiago' => "(GMT-04:00) Santiago",
'Canada/Newfoundland' => "(GMT-03:30) Newfoundland",
'America/Buenos_Aires' => "(GMT-03:00) Buenos Aires",
'Greenland' => "(GMT-03:00) Greenland",
'Atlantic/Stanley' => "(GMT-02:00) Stanley",
'Atlantic/Azores' => "(GMT-01:00) Azores",
'Atlantic/Cape_Verde' => "(GMT-01:00) Cape Verde Is.",
'Africa/Casablanca' => "(GMT) Casablanca",
'Europe/Dublin' => "(GMT) Dublin",
'Europe/Lisbon' => "(GMT) Lisbon",
'Europe/London' => "(GMT) London",
'Africa/Monrovia' => "(GMT) Monrovia",
'Europe/Amsterdam' => "(GMT+01:00) Amsterdam",
'Europe/Belgrade' => "(GMT+01:00) Belgrade",
'Europe/Berlin' => "(GMT+01:00) Berlin",
'Europe/Bratislava' => "(GMT+01:00) Bratislava",
'Europe/Brussels' => "(GMT+01:00) Brussels",
'Europe/Budapest' => "(GMT+01:00) Budapest",
'Europe/Copenhagen' => "(GMT+01:00) Copenhagen",
'Europe/Ljubljana' => "(GMT+01:00) Ljubljana",
'Europe/Madrid' => "(GMT+01:00) Madrid",
'Europe/Paris' => "(GMT+01:00) Paris",
'Europe/Prague' => "(GMT+01:00) Prague",
'Europe/Rome' => "(GMT+01:00) Rome",
'Europe/Sarajevo' => "(GMT+01:00) Sarajevo",
'Europe/Skopje' => "(GMT+01:00) Skopje",
'Europe/Stockholm' => "(GMT+01:00) Stockholm",
'Europe/Vienna' => "(GMT+01:00) Vienna",
'Europe/Warsaw' => "(GMT+01:00) Warsaw",
'Europe/Zagreb' => "(GMT+01:00) Zagreb",
'Europe/Athens' => "(GMT+02:00) Athens",
'Europe/Bucharest' => "(GMT+02:00) Bucharest",
'Africa/Cairo' => "(GMT+02:00) Cairo",
'Africa/Harare' => "(GMT+02:00) Harare",
'Europe/Helsinki' => "(GMT+02:00) Helsinki",
'Europe/Istanbul' => "(GMT+02:00) Istanbul",
'Asia/Jerusalem' => "(GMT+02:00) Jerusalem",
'Europe/Kiev' => "(GMT+02:00) Kyiv",
'Europe/Minsk' => "(GMT+02:00) Minsk",
'Europe/Riga' => "(GMT+02:00) Riga",
'Europe/Sofia' => "(GMT+02:00) Sofia",
'Europe/Tallinn' => "(GMT+02:00) Tallinn",
'Europe/Vilnius' => "(GMT+02:00) Vilnius",
'Asia/Baghdad' => "(GMT+03:00) Baghdad",
'Asia/Kuwait' => "(GMT+03:00) Kuwait",
'Africa/Nairobi' => "(GMT+03:00) Nairobi",
'Asia/Riyadh' => "(GMT+03:00) Riyadh",
'Europe/Moscow' => "(GMT+03:00) Moscow",
'Asia/Tehran' => "(GMT+03:30) Tehran",
'Asia/Baku' => "(GMT+04:00) Baku",
'Europe/Volgograd' => "(GMT+04:00) Volgograd",
'Asia/Muscat' => "(GMT+04:00) Muscat",
'Asia/Tbilisi' => "(GMT+04:00) Tbilisi",
'Asia/Yerevan' => "(GMT+04:00) Yerevan",
'Asia/Kabul' => "(GMT+04:30) Kabul",
'Asia/Karachi' => "(GMT+05:00) Karachi",
'Asia/Tashkent' => "(GMT+05:00) Tashkent",
'Asia/Kolkata' => "(GMT+05:30) Kolkata",
'Asia/Kathmandu' => "(GMT+05:45) Kathmandu",
'Asia/Yekaterinburg' => "(GMT+06:00) Ekaterinburg",
'Asia/Almaty' => "(GMT+06:00) Almaty",
'Asia/Dhaka' => "(GMT+06:00) Dhaka",
'Asia/Novosibirsk' => "(GMT+07:00) Novosibirsk",
'Asia/Bangkok' => "(GMT+07:00) Bangkok",
'Asia/Jakarta' => "(GMT+07:00) Jakarta",
'Asia/Krasnoyarsk' => "(GMT+08:00) Krasnoyarsk",
'Asia/Chongqing' => "(GMT+08:00) Chongqing",
'Asia/Hong_Kong' => "(GMT+08:00) Hong Kong",
'Asia/Kuala_Lumpur' => "(GMT+08:00) Kuala Lumpur",
'Australia/Perth' => "(GMT+08:00) Perth",
'Asia/Singapore' => "(GMT+08:00) Singapore",
'Asia/Taipei' => "(GMT+08:00) Taipei",
'Asia/Ulaanbaatar' => "(GMT+08:00) Ulaan Bataar",
'Asia/Urumqi' => "(GMT+08:00) Urumqi",
'Asia/Irkutsk' => "(GMT+09:00) Irkutsk",
'Asia/Seoul' => "(GMT+09:00) Seoul",
'Asia/Tokyo' => "(GMT+09:00) Tokyo",
'Australia/Adelaide' => "(GMT+09:30) Adelaide",
'Australia/Darwin' => "(GMT+09:30) Darwin",
'Asia/Yakutsk' => "(GMT+10:00) Yakutsk",
'Australia/Brisbane' => "(GMT+10:00) Brisbane",
'Australia/Canberra' => "(GMT+10:00) Canberra",
'Pacific/Guam' => "(GMT+10:00) Guam",
'Australia/Hobart' => "(GMT+10:00) Hobart",
'Australia/Melbourne' => "(GMT+10:00) Melbourne",
'Pacific/Port_Moresby' => "(GMT+10:00) Port Moresby",
'Australia/Sydney' => "(GMT+10:00) Sydney",
'Asia/Vladivostok' => "(GMT+11:00) Vladivostok",
'Asia/Magadan' => "(GMT+12:00) Magadan",
'Pacific/Auckland' => "(GMT+12:00) Auckland",
'Pacific/Fiji' => "(GMT+12:00) Fiji",
);
Problem
I am looking for a way to generate a list of timezones for display in a `<select>` Generating a drop down list of timezones with PHP ``` $list = DateTimeZone::listAbbreviations(); $idents = DateTimeZone::listIdentifiers(); $data = $offset = $added = array(); foreach ($list as $abbr => $info) { foreach ($info as $zone) { if ( ! empty($zone['timezone_id']) AND ! in_array($zone['timezone_id'], $added) AND in_array($zone['timezone_id'], $idents)) { $z = new DateTimeZone($zone['timezone_id']); $c = new DateTime(null, $z); $zone['time'] = $c->format('H:i a'); $data[] = $zone; $offset[] = $z->getOffset($c); $added[] = $zone['timezone_id']; } } } array_multisort($offset, SORT_ASC, $data); $options = array(); foreach ($data as $key => $row) { $options[$row['timezone_id']] = $row['time'] . ' - ' . formatOffset($row['offset']) . ' ' . $row['timezone_id']; } // now you can use $options; function formatOffset($offset) { $hours = $offset / 3600; $remainder = $offset % 3600; $sign = $hours > 0 ? '+' : '-'; $hour = (int) abs($hours); $minutes = (int) abs($remainder / 60); if ($hour == 0 AND $minutes == 0) { $sign = ' '; } return 'GMT' . $sign . str_pad($hour, 2, '0', STR_PAD_LEFT) .':'. str_pad($minutes,2, '0'); } ``` When I checked my country, the offset was wrong, I am in Asia/Singapore, it should be UTC/GMT +8 http://www.timeanddate.com/worldclock/city.html?n=236 but according to the generated list its +9. Is there some kind of logic error? The time was correct tho Is there a better way to generate this list? from the same question in the link above, ``` static $regions = array( 'Africa' => DateTimeZone::AFRICA, 'America' => DateTimeZone::AMERICA, 'Antarctica' => DateTimeZone::ANTARCTICA, 'Aisa' => DateTimeZone::ASIA, 'Atlantic' => DateTimeZone::ATLANTIC, 'Europe' => DateTimeZone::EUROPE, 'Indian' => DateTimeZone::INDIAN, 'Pacific' => DateTimeZone::PACIFIC ); foreach ($regions as $name => $mask) { $tzlist[] = DateTimeZone::listIdentifiers($mask); } ``` This just gets the identifiers I want a friendly display name eg. UTC+8 Asia/Singapore or something similar. How can I get that?