用TimeZones填充<SELECT>框的最佳方法

我需要显示一个时区select器作为用户控件，它总是比实际上更容易。 在内部，我用一个DateTimeZone标识符存储所有的东西，因为这个项目似乎是我需要的最准确的方法，因为这个项目把现实世界的时间与地面媒体联系起来。

我不想做的是提供一个有300多个时区的select框，我也不想用'UTC-8'（它不仅丢失了DST信息，而是实际的dateDST落在）。

最后，我需要一个包含适当的TZD标识符的选项，像这样（括号中的＃不是必需的，只是为了潜在的最终用户的插图）： 

<select> <option value="America/Los_Angeles">Los Angeles [UTC-7 | DST]</option> ... </select>

有没有人有任何build设这个名单的指针？ 我所search到的所有解决scheme在某种程度上都是有问题的。

我已经添加了一个赏金，以防可能诱使别人与我们分享更好的答案。 ：） 

 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 $sign . str_pad($hour, 2, '0', STR_PAD_LEFT) .':'. str_pad($minutes,2, '0'); } $utc = new DateTimeZone('UTC'); $dt = new DateTime('now', $utc); echo '<select name="userTimeZone">'; foreach(DateTimeZone::listIdentifiers() as $tz) { $current_tz = new DateTimeZone($tz); $offset = $current_tz->getOffset($dt); $transition = $current_tz->getTransitions($dt->getTimestamp(), $dt->getTimestamp()); $abbr = $transition[0]['abbr']; echo '<option value="' .$tz. '">' .$tz. ' [' .$abbr. ' '. formatOffset($offset). ']</option>'; } echo '</select>';

以上将以下列格式输出select菜单中的所有时区： 

 <select name="userTimeZone"> <option value="America/Los_Angeles">America/Los_Angeles [PDT -7]</option> </select>

我的解决scheme

要避免一个巨大的时区列表，请让用户先select国家，然后使用该信息来填充时区列表。

文件populate.php 

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <title>Select test</title> <script type="text/javascript" src="http://code.jquery.com/jquery-1.6.2.min.js"></script> <script type="text/javascript" charset="utf-8"> $(function(){ $("select#country").change(function(){ $.getJSON("json.php",{country: $(this).val()}, function(j){ var options = ''; for (var i = 0; i < j.length; i++) { options += '<option value="' + j[i].optionValue + '">' + j[i].optionDisplay + '</option>'; } $("#city").html(options); $('#city option:first').attr('selected', 'selected'); }) }) }) </script> </head> <body> <form action="#"> <label for="country">Country:</label> <select name="country" id="country"> <option value="Portugal">Portugal</option> <option value="United States">United States</option> <option value="Japan">Japan</option> </select> <label for="city">Timezone:</label> <select name="city" id="city"> <option value="Atlantic/Azores">Atlantic/Azores</option> <option value="Atlantic/Madeira">Atlantic/Madeira</option> <option value="Europe/Lisbon">Europe/Lisbon</option> </select> <input type="submit" name="action" value="Set TZ" /> </form>

文件json.php 

 $country = $_GET['country']; $citylist = ""; $country_list = file_get_contents("country_iso.txt"); //grab this file @ http://pastebin.com/e8gxcVHm preg_match_all('/(.*?):'.$country.'/im', $country_list, $country_iso, PREG_PATTERN_ORDER); $country_iso = $country_iso[1][0]; if(isset($country_iso)) { $tz = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $country_iso); //php 5.3 needed to use DateTimeZone::PER_COUNTRY ! foreach($tz as $city) $citylist .= "{\"optionValue\": \"$city\", \"optionDisplay\": \"$city\"}, "; } $citylist = preg_replace('/, $/im', '', $citylist); $citylist = "[".$citylist."]"; echo $citylist;

我希望它可以帮助你:)

如果你想用zoneinfo做一些事情，那么除了包含数百个条目之外别无select，因为这只是zoneinfo的工作方式。 它通常每个国家至less有一个入口，并有大约200个国家（根据维基百科 ）。

我之前做的是使用timezone_identifiers_list()并过滤掉任何不在标准区域中的条目： 

 # Output option list, HTML. $opt = ''; $regions = array('Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); $tzs = timezone_identifiers_list(); $optgroup = ''; sort($tzs); foreach ($tzs as $tz) { $z = explode('/', $tz, 2); # timezone_identifiers_list() returns a number of # backwards-compatibility entries. This filters them out of the # list presented to the user. if (count($z) != 2 || !in_array($z[0], $regions)) continue; if ($optgroup != $z[0]) { if ($optgroup !== '') $opt .= '</optgroup>'; $optgroup = $z[0]; $opt .= '<optgroup label="' . htmlentities($z[0]) . '">'; } $opt .= '<option value="' . htmlentities($tz) . '" label="' . htmlentities(str_replace('_', ' ', $z[1])) . '">' . htmlentities(str_replace('_', ' ', $tz)) . '</option>'; } if ($optgroup !== '') $opt .= '</optgroup>';

这会使用<optgroup>元素创build一个列表，所以列表至less在逻辑上将按区域划分。

我发现这是一个很好的资源： http : //randomdrake.com/2008/08/06/time-zone-abbreviation-difficulties-with-php/

在这一天结束的时候，我认为没有一个很好的解决scheme，可以预先筛选时区的太多清单……所涉及的问题让我决定从一个体面的阶层开始。 我在这里发布，因为有些人对此感兴趣。 希望我的解决scheme也能帮助其他人。

它能做什么：

  • 让您从PHP中的整个列表中创build一个时区列表

  • 让您根据自己的预定义定义创build一个不错的列表，计算当前的UTC偏移量。

  • 让您按国家创build一个列表。

  • 用相同的缩写去重复时区。 请注意，我没有做太多的研究，看看列表中是否有重复，我不应该摆脱。 即使两个时区可能会报告相同的缩写（例如，亚利桑那州的MST），但它还会足够聪明地知道，它将进一步确定该时区是否支持DST的一年中的任何时间。

  • 输出相当可configuration的HTML（无需下载到模板path中）或JSON（用于Ajax或内联JavaScript）。

  • 计算任何给定时区的当前时区偏移量。 请注意，这不是静态的…它将在一年中改变。

  • 为实际使用提供大量的糖。

它不能做什么：

  • 通过OptGroup分开国家或大陆。 由于我已经按照UTC时差进行了sorting，这看起来似乎会导致更多的混乱，而不是缓解。

我可能会添加一天的事情：

  • 使用模板构buildHTML，而不是像这样内联。

  • 其他select器，如采取一组国家，而不是一个单一的。

  • 分组，但正如我上面提到的，我正在这样做。

  • 代码很湿。 有一些小的编码风格差异。

  • 能够指定友好名称的“首选”列表。 例如，尽pipe“道森”是一个完全可行的候选人被列为“太平洋战区”的城市，因为它是太平洋战区主要群体的一部分，并观察夏令时间…一个只有1000多居民的城市不应该击败洛杉矶，旧金山，西雅图或温哥华，只是因为它首先出现词汇。

  • 原始输出，所以没有人与简单的“toSelect”和“toJson”方法联系起来。

一般来说，它应该适合我的需求。 它适当地处理我熟悉的所有时区，以及我目前项目所需的全部时区。 不幸的是，我的知识范围主要集中在美国和西欧。

这是完美的吗？ 可能不会。 很高兴听到任何人可能对此代码有任何问题/错误/改进，因为它很可能会在我的永久库中结束。 如果有人认为我很高…也让我知道。 这个问题的关键就是要find最能代表时区select器的最佳方式，这对于terminal用户来说确实有用。

TimezoneList.php： 

 <?php class TimezoneList { public $timezones = array(); private $_initialized = false; private $_dt_now; private $_utc; function __construct($grouped = false) { $this->_utc = new DateTimeZone('UTC'); $this->_dt_now = new DateTime('now', $this->_utc); } // Public Static Alternate Constructors public static function byCountry($countryKey) { $retVal = new TimezoneList(); $retVal->_setList($countryKey); return $retVal; } public static function fromTimezones(Array $tzArr) { $retVal = new TimezoneList(); foreach ($tzArr as $tzItem) { $retVal->timezones[] = $tzItem; } $retVal->_initialized = true; return $retVal; } public static function fromIdentifierList($timezoneList, $friendlyNames = NULL) { $retVal = new TimezoneList(); if ($friendlyNames) { if (count($timezoneList) != count($friendlyNames)) throw new Exception('Array count mismatch in TimezoneBuilder::fromList'); } // I'd normally use a foreach pattern, but since friendlyNames is optional, this seemed the way to go. for ($ii = 0; $ii < count($timezoneList); $ii++) { $pTimezoneEx = new TimezoneExtended($timezoneList[$ii]); if ($friendlyNames) { $pTimezoneEx->friendlyName = $friendlyNames[$ii]; } $retVal->timezones[] = $pTimezoneEx; } $retVal->_initialized = true; return $retVal; } // Private Statics // Private utility function [ Thanks to Zubair1 ] private static function _formatOffset($offset) { $hours = $offset / 3600; $remainder = $offset % 3600; $sign = $hours > 0 ? '+' : '-'; $hour = (int)abs($hours); $minutes = (int)abs($remainder / 60); $sign = (($hour == 0) && ($minutes == 0)) ? ' ' : $sign; return $sign.str_pad($hour, 2, '0', STR_PAD_LEFT).':'.str_pad($minutes,2, '0'); } // Publics public function getUniqueTimezoneList($countryKey = null) { $this->_initialize(); $outArr = array(); $usedTzs = array(); foreach ($this->timezones as $timezoneEx) { if (!(in_array($timezoneEx->currentKey, $usedTzs))) { $usedTzs[] = $timezoneEx->currentKey; $outArr[] = $timezoneEx; } } usort($outArr,array('self','_orderByOffset')); return self::fromTimezones($outArr); } // In final code, I'll use a PHP include with output buffering as a template. public function toSelect($displayOffset = true, $displayCurrent = true, $selected = array(), Array $options = array()) { $pOpts = array(); $pItems = array(); foreach ($options as $key=>$option) { $pOpts[] = ' '.$key.'="'.$option.'"'; } if (!is_array($selected)) $selected = array($selected); $outVal = '<select'.implode('', $pOpts).'>'."\n"; foreach ($this->timezones as $timezoneEx) { $offset = ''; $selectionAttr = ''; if (in_array($timezoneEx->tzkey, $selected)) { $selectionAttr = ' selected="selected"'; } if ($displayOffset) { $offset = ' ['.$timezoneEx->currentAbbr.' '.self::_formatOffset($timezoneEx->currentOffset); if ($displayCurrent && (!($timezoneEx->observesDst))) $offset .= ' ( Does not observe DST ) '; $offset .= ']'; } $pItems[] = "\t".'<option value="'.$timezoneEx->tzkey.'"'.$selectionAttr.'>'.$timezoneEx->friendlyName.$offset.'</option>'; } $outVal .= implode("\n", $pItems)."\n".'</select>'; return $outVal; } public function toJson() { $outArr = array(); foreach ($this->timezones as $timezoneEx) { $outArr[] = $timezoneEx->toShallowArray(); } return json_encode($outArr); } // Privates private function _initialize() { if ($this->_initialized) return; $this->_setList(); } private function _orderByOffset($a, $b) { if( $a->currentOffset == $b->currentOffset ){ return 0 ; } return ($a->currentOffset < $b->currentOffset) ? -1 : 1; } private function _setList($countryKey = NULL) { $this->timezones = array(); $listType = ($countryKey) ? DateTimeZone::PER_COUNTRY : DateTimeZone::ALL; $tzIds = DateTimeZone::listIdentifiers($listType, $countryKey); foreach ($tzIds as $tzIdentifier) { $this->timezones[] = new TimezoneExtended($tzIdentifier); } $this->_initialized = true; } } class TimezoneExtended { const START_YEAR = 'January 1st'; const MID_YEAR = 'July 1st'; private static $_dt_startYear = NULL; // Static so that we don't have to rebuild it each time we go through. private static $_dt_midYear = NULL; private static $_dtz_utc = NULL; private static $_dt_now = NULL; private $_baseObj; public $tzkey; public $friendlyName; public $currentKey; // Current Key contains the friendly Timezone Key + whether this timezone observes DST. // This is unique across the US & Canada. Unsure if it will be unique across other Timezones. public $currentAbbr; public $currentOffset; public $currentlyDst; public $observesDst = false; // Defaults to off function __construct($tzKey) { if (empty(self::$_dtz_utc)) self::$_dtz_utc = new DateTimeZone('UTC'); if (empty(self::$_dtz_now)) self::$_dt_now = new DateTime('now', self::$_dtz_utc); if (empty(self::$_dt_startYear)) self::$_dt_startYear = new DateTime(self::START_YEAR, self::$_dtz_utc); if (empty(self::$_dt_midYear)) self::$_dt_midYear = new DateTime(self::MID_YEAR, self::$_dtz_utc); $this->tzkey = $tzKey; $this->_baseObj = new DateTimeZone($tzKey); if ($this->_baseObj == NULL) throw new Exception('Invalid Timezone Key'); foreach ($this->_baseObj->getTransitions(self::$_dt_startYear->getTimestamp()) as $transition) { if ($transition['isdst']) $this->observesDst = true; } foreach ($this->_baseObj->getTransitions(self::$_dt_midYear->getTimestamp()) as $transition) { if ($transition['isdst']) $this->observesDst = true; } $this->friendlyName =str_replace('_',' ',array_pop(explode('/',$tzKey))); $pTransition = $this->_baseObj->getTransitions(self::$_dt_now->getTimestamp()); $this->currentAbbr = $pTransition[0]['abbr']; // With a Timestamp, we should only get one transition. $this->currentlyDst = $pTransition[0]['isdst']; $this->currentKey = $this->currentAbbr.'_'.$this->observesDst; $this->currentOffset = $this->_baseObj->getOffset(self::$_dt_now); } public function toShallowArray() { $outArr = array( 'tzkey'=>$this->tzkey, 'friendlyName'=>$this->friendlyName, 'currentOffset'=>$this->currentOffset/3600, 'observesDst'=>$this->observesDst, 'currentlyDst'=>$this->currentlyDst, 'currentAbbr'=>$this->currentAbbr ); return $outArr; } }

呼。 以下是使用示例（timezones.php）： 

 <?php include_once 'TimezoneList.php'; /* Example 1: Get Select Box by Country Code */ $tzl = TimezoneList::byCountry('US'); $tzl = $tzl->getUniqueTimezoneList(); echo $tzl->toSelect(true,true,'America/Los_Angeles'); echo "\n".'<br />'."\n"; /* Example 2: Get a list by country code, output as JSON for AJAX (or similar uses) */ $_REQUEST['country_code'] = 'US'; // Hack for quick usage. $tzl_ajax = TimezoneList::byCountry($_REQUEST['country_code']); $tzl_ajax = $tzl_ajax->getUniqueTimezoneList(); echo '<script type="text/javascript">'."\n"; echo 'var foo = '.$tzl_ajax->toJson().';'; echo "\n".'</script>'; echo "\n".'<br />'."\n"; /* Example 3: Get Select Box from a list of TZDs + friendly names */ $tzl2 = TimezoneList::fromIdentifierList( array('America/Los_Angeles','America/Boise','America/Phoenix','America/Chicago','America/New_York'), array('Pacific','Mountain','Mountain (Arizona)','Central','Eastern') ); // Example shows setting extra properties on the <SELECT>. echo $tzl2->toSelect(true,false,'America/Los_Angeles', array('style'=>'font-size:15px; border:1px solid #ccc; padding:4px', 'id'=>'timezone_list', 'class'=>'standard-list', 'name'=>'timezone') ); echo "\n".'<br />'."\n"; /* Example 4: Get a raw list of timezones */ $tzl3 = new TimezoneList(true); $tzl3 = $tzl3->getUniqueTimezoneList(); echo $tzl3->toSelect(true,false,'America/Los_Angeles');

这里是timezones.php中的例子的输出代码： 

 <select> <option value="Pacific/Honolulu">Honolulu [HST -10:00 ( Does not observe DST ) ]</option> <option value="America/Adak">Adak [HADT -09:00]</option> <option value="America/Anchorage">Anchorage [AKDT -08:00]</option> <option value="America/Phoenix">Phoenix [MST -07:00 ( Does not observe DST ) ]</option> <option value="America/Los_Angeles" selected="selected">Los Angeles [PDT -07:00]</option> <option value="America/Boise">Boise [MDT -06:00]</option> <option value="America/Chicago">Chicago [CDT -05:00]</option> <option value="America/Detroit">Detroit [EDT -04:00]</option> </select> <br /> <script type="text/javascript"> var foo = [{"tzkey":"Pacific\/Honolulu","friendlyName":"Honolulu","currentOffset":-10,"observesDst":false,"currentlyDst":false,"currentAbbr":"HST"},{"tzkey":"America\/Adak","friendlyName":"Adak","currentOffset":-9,"observesDst":true,"currentlyDst":true,"currentAbbr":"HADT"},{"tzkey":"America\/Anchorage","friendlyName":"Anchorage","currentOffset":-8,"observesDst":true,"currentlyDst":true,"currentAbbr":"AKDT"},{"tzkey":"America\/Phoenix","friendlyName":"Phoenix","currentOffset":-7,"observesDst":false,"currentlyDst":false,"currentAbbr":"MST"},{"tzkey":"America\/Los_Angeles","friendlyName":"Los Angeles","currentOffset":-7,"observesDst":true,"currentlyDst":true,"currentAbbr":"PDT"},{"tzkey":"America\/Boise","friendlyName":"Boise","currentOffset":-6,"observesDst":true,"currentlyDst":true,"currentAbbr":"MDT"},{"tzkey":"America\/Chicago","friendlyName":"Chicago","currentOffset":-5,"observesDst":true,"currentlyDst":true,"currentAbbr":"CDT"},{"tzkey":"America\/Detroit","friendlyName":"Detroit","currentOffset":-4,"observesDst":true,"currentlyDst":true,"currentAbbr":"EDT"}]; </script> <br /> <select style="font-size:15px; border:1px solid #ccc; padding:4px" id="timezone_list" class="standard-list" name="timezone"> <option value="America/Los_Angeles" selected="selected">Pacific [PDT -07:00]</option> <option value="America/Boise">Mountain [MDT -06:00]</option> <option value="America/Phoenix">Mountain (Arizona) [MST -07:00]</option> <option value="America/Chicago">Central [CDT -05:00]</option> <option value="America/New_York">Eastern [EDT -04:00]</option> </select> <br /> <select> <option value="Pacific/Midway">Midway [SST -11:00]</option> <option value="Pacific/Niue">Niue [NUT -11:00]</option> <option value="Pacific/Apia">Apia [WST -11:00]</option> <option value="Pacific/Tahiti">Tahiti [TAHT -10:00]</option> <option value="Pacific/Honolulu">Honolulu [HST -10:00]</option> <option value="Pacific/Rarotonga">Rarotonga [CKT -10:00]</option> <option value="Pacific/Fakaofo">Fakaofo [TKT -10:00]</option> <option value="Pacific/Marquesas">Marquesas [MART -09:30]</option> <option value="America/Adak">Adak [HADT -09:00]</option> <option value="Pacific/Gambier">Gambier [GAMT -09:00]</option> <option value="America/Anchorage">Anchorage [AKDT -08:00]</option> <option value="Pacific/Pitcairn">Pitcairn [PST -08:00]</option> <option value="America/Dawson_Creek">Dawson Creek [MST -07:00]</option> <option value="America/Dawson">Dawson [PDT -07:00]</option> <option value="America/Belize">Belize [CST -06:00]</option> <option value="America/Boise">Boise [MDT -06:00]</option> <option value="Pacific/Easter">Easter [EAST -06:00]</option> <option value="Pacific/Galapagos">Galapagos [GALT -06:00]</option> <option value="America/Resolute">Resolute [CDT -05:00]</option> <option value="America/Cancun">Cancun [CDT -05:00]</option> <option value="America/Guayaquil">Guayaquil [ECT -05:00]</option> <option value="America/Lima">Lima [PET -05:00]</option> <option value="America/Bogota">Bogota [COT -05:00]</option> <option value="America/Atikokan">Atikokan [EST -05:00]</option> <option value="America/Caracas">Caracas [VET -04:30]</option> <option value="America/Guyana">Guyana [GYT -04:00]</option> <option value="America/Campo_Grande">Campo Grande [AMT -04:00]</option> <option value="America/La_Paz">La Paz [BOT -04:00]</option> <option value="America/Anguilla">Anguilla [AST -04:00]</option> <option value="Atlantic/Stanley">Stanley [FKT -04:00]</option> <option value="America/Detroit">Detroit [EDT -04:00]</option> <option value="America/Boa_Vista">Boa Vista [AMT -04:00]</option> <option value="America/Santiago">Santiago [CLT -04:00]</option> <option value="America/Asuncion">Asuncion [PYT -04:00]</option> <option value="Antarctica/Rothera">Rothera [ROTT -03:00]</option> <option value="America/Paramaribo">Paramaribo [SRT -03:00]</option> <option value="America/Sao_Paulo">Sao Paulo [BRT -03:00]</option> <option value="America/Argentina/Buenos_Aires">Buenos Aires [ART -03:00]</option> <option value="America/Cayenne">Cayenne [GFT -03:00]</option> <option value="America/Glace_Bay">Glace Bay [ADT -03:00]</option> <option value="America/Argentina/San_Luis">San Luis [WARST -03:00]</option> <option value="America/Araguaina">Araguaina [BRT -03:00]</option> <option value="America/Montevideo">Montevideo [UYT -03:00]</option> <option value="America/St_Johns">St Johns [NDT -02:30]</option> <option value="America/Miquelon">Miquelon [PMDT -02:00]</option> <option value="America/Noronha">Noronha [FNT -02:00]</option> <option value="America/Godthab">Godthab [WGST -02:00]</option> <option value="Atlantic/Cape_Verde">Cape Verde [CVT -01:00]</option> <option value="Atlantic/Azores">Azores [AZOST 00:00]</option> <option value="America/Scoresbysund">Scoresbysund [EGST 00:00]</option> <option value="UTC">UTC [UTC 00:00]</option> <option value="Africa/Abidjan">Abidjan [GMT 00:00]</option> <option value="Africa/Casablanca">Casablanca [WET 00:00]</option> <option value="Africa/Bangui">Bangui [WAT +01:00]</option> <option value="Europe/Guernsey">Guernsey [BST +01:00]</option> <option value="Europe/Dublin">Dublin [IST +01:00]</option> <option value="Africa/Algiers">Algiers [CET +01:00]</option> <option value="Atlantic/Canary">Canary [WEST +01:00]</option> <option value="Africa/Windhoek">Windhoek [WAT +01:00]</option> <option value="Africa/Johannesburg">Johannesburg [SAST +02:00]</option> <option value="Africa/Blantyre">Blantyre [CAT +02:00]</option> <option value="Africa/Tripoli">Tripoli [EET +02:00]</option> <option value="Africa/Ceuta">Ceuta [CEST +02:00]</option> <option value="Asia/Jerusalem">Jerusalem [IDT +03:00]</option> <option value="Africa/Addis_Ababa">Addis Ababa [EAT +03:00]</option> <option value="Africa/Cairo">Cairo [EEST +03:00]</option> <option value="Antarctica/Syowa">Syowa [SYOT +03:00]</option> <option value="Europe/Volgograd">Volgograd [VOLST +04:00]</option> <option value="Europe/Samara">Samara [SAMST +04:00]</option> <option value="Asia/Tbilisi">Tbilisi [GET +04:00]</option> <option value="Europe/Moscow">Moscow [MSD +04:00]</option> <option value="Asia/Dubai">Dubai [GST +04:00]</option> <option value="Indian/Mauritius">Mauritius [MUT +04:00]</option> <option value="Indian/Reunion">Reunion [RET +04:00]</option> <option value="Indian/Mahe">Mahe [SCT +04:00]</option> <option value="Asia/Tehran">Tehran [IRDT +04:30]</option> <option value="Asia/Kabul">Kabul [AFT +04:30]</option> <option value="Asia/Aqtau">Aqtau [AQTT +05:00]</option> <option value="Asia/Ashgabat">Ashgabat [TMT +05:00]</option> <option value="Asia/Oral">Oral [ORAT +05:00]</option> <option value="Asia/Yerevan">Yerevan [AMST +05:00]</option> <option value="Asia/Baku">Baku [AZST +05:00]</option> <option value="Indian/Kerguelen">Kerguelen [TFT +05:00]</option> <option value="Indian/Maldives">Maldives [MVT +05:00]</option> <option value="Asia/Karachi">Karachi [PKT +05:00]</option> <option value="Asia/Dushanbe">Dushanbe [TJT +05:00]</option> <option value="Asia/Samarkand">Samarkand [UZT +05:00]</option> <option value="Antarctica/Mawson">Mawson [MAWT +05:00]</option> <option value="Asia/Colombo">Colombo [IST +05:30]</option> <option value="Asia/Kathmandu">Kathmandu [NPT +05:45]</option> <option value="Indian/Chagos">Chagos [IOT +06:00]</option> <option value="Asia/Bishkek">Bishkek [KGT +06:00]</option> <option value="Asia/Almaty">Almaty [ALMT +06:00]</option> <option value="Antarctica/Vostok">Vostok [VOST +06:00]</option> <option value="Asia/Yekaterinburg">Yekaterinburg [YEKST +06:00]</option> <option value="Asia/Dhaka">Dhaka [BDT +06:00]</option> <option value="Asia/Thimphu">Thimphu [BTT +06:00]</option> <option value="Asia/Qyzylorda">Qyzylorda [QYZT +06:00]</option> <option value="Indian/Cocos">Cocos [CCT +06:30]</option> <option value="Asia/Rangoon">Rangoon [MMT +06:30]</option> <option value="Asia/Jakarta">Jakarta [WIT +07:00]</option> <option value="Asia/Hovd">Hovd [HOVT +07:00]</option> <option value="Antarctica/Davis">Davis [DAVT +07:00]</option> <option value="Asia/Bangkok">Bangkok [ICT +07:00]</option> <option value="Indian/Christmas">Christmas [CXT +07:00]</option> <option value="Asia/Omsk">Omsk [OMSST +07:00]</option> <option value="Asia/Novokuznetsk">Novokuznetsk [NOVST +07:00]</option> <option value="Asia/Choibalsan">Choibalsan [CHOT +08:00]</option> <option value="Asia/Ulaanbaatar">Ulaanbaatar [ULAT +08:00]</option> <option value="Asia/Brunei">Brunei [BNT +08:00]</option> <option value="Antarctica/Casey">Casey [WST +08:00]</option> <option value="Asia/Singapore">Singapore [SGT +08:00]</option> <option value="Asia/Manila">Manila [PHT +08:00]</option> <option value="Asia/Hong_Kong">Hong Kong [HKT +08:00]</option> <option value="Asia/Krasnoyarsk">Krasnoyarsk [KRAST +08:00]</option> <option value="Asia/Makassar">Makassar [CIT +08:00]</option> <option value="Asia/Kuala_Lumpur">Kuala Lumpur [MYT +08:00]</option> <option value="Australia/Eucla">Eucla [CWST +08:45]</option> <option value="Pacific/Palau">Palau [PWT +09:00]</option> <option value="Asia/Tokyo">Tokyo [JST +09:00]</option> <option value="Asia/Dili">Dili [TLT +09:00]</option> <option value="Asia/Jayapura">Jayapura [EIT +09:00]</option> <option value="Asia/Pyongyang">Pyongyang [KST +09:00]</option> <option value="Asia/Irkutsk">Irkutsk [IRKST +09:00]</option> <option value="Australia/Adelaide">Adelaide [CST +09:30]</option> <option value="Asia/Yakutsk">Yakutsk [YAKST +10:00]</option> <option value="Australia/Currie">Currie [EST +10:00]</option> <option value="Pacific/Port_Moresby">Port Moresby [PGT +10:00]</option> <option value="Pacific/Guam">Guam [ChST +10:00]</option> <option value="Pacific/Truk">Truk [TRUT +10:00]</option> <option value="Antarctica/DumontDUrville">DumontDUrville [DDUT +10:00]</option> <option value="Australia/Lord_Howe">Lord Howe [LHST +10:30]</option> <option value="Pacific/Ponape">Ponape [PONT +11:00]</option> <option value="Pacific/Kosrae">Kosrae [KOST +11:00]</option> <option value="Antarctica/Macquarie">Macquarie [MIST +11:00]</option> <option value="Pacific/Noumea">Noumea [NCT +11:00]</option> <option value="Pacific/Efate">Efate [VUT +11:00]</option> <option value="Pacific/Guadalcanal">Guadalcanal [SBT +11:00]</option> <option value="Asia/Sakhalin">Sakhalin [SAKST +11:00]</option> <option value="Asia/Vladivostok">Vladivostok [VLAST +11:00]</option> <option value="Pacific/Norfolk">Norfolk [NFT +11:30]</option> <option value="Asia/Kamchatka">Kamchatka [PETST +12:00]</option> <option value="Pacific/Tarawa">Tarawa [GILT +12:00]</option> <option value="Asia/Magadan">Magadan [MAGST +12:00]</option> <option value="Pacific/Wallis">Wallis [WFT +12:00]</option> <option value="Pacific/Kwajalein">Kwajalein [MHT +12:00]</option> <option value="Pacific/Funafuti">Funafuti [TVT +12:00]</option> <option value="Pacific/Nauru">Nauru [NRT +12:00]</option> <option value="Asia/Anadyr">Anadyr [ANAST +12:00]</option> <option value="Antarctica/McMurdo">McMurdo [NZST +12:00]</option> <option value="Pacific/Wake">Wake [WAKT +12:00]</option> <option value="Pacific/Fiji">Fiji [FJT +12:00]</option> <option value="Pacific/Chatham">Chatham [CHAST +12:45]</option> <option value="Pacific/Enderbury">Enderbury [PHOT +13:00]</option> <option value="Pacific/Tongatapu">Tongatapu [TOT +13:00]</option> <option value="Pacific/Kiritimati">Kiritimati [LINT +14:00]</option> </select>

我想出了一个dynamic的自我更新的解决scheme，不需要任何查找表（ select演示 ）： 

 function Timezones() { $result = array(); $timezones = array(); // only process geographical timezones foreach (preg_grep('~^(?:A(?:frica|merica|ntarctica|rctic|tlantic|sia|ustralia)|Europe|Indian|Pacific)/~', timezone_identifiers_list()) as $timezone) { if (is_object($timezone = new DateTimeZone($timezone)) === true) { $id = array(); // get only the two most distant transitions foreach (array_slice($timezone->getTransitions($_SERVER['REQUEST_TIME']), -2) as $transition) { // dark magic $id[] = sprintf('%b|%+d|%u', $transition['isdst'], $transition['offset'], $transition['ts']); } if (count($id) > 1) { sort($id, SORT_NUMERIC); // sort by %b (isdst = 0) first, so that we always get the raw offset } $timezones[implode('|', $id)][] = $timezone->getName(); } } if ((is_array($timezones) === true) && (count($timezones) > 0)) { uksort($timezones, function($a, $b) // sort offsets by -, 0, + { foreach (array('a', 'b') as $key) { $$key = explode('|', $$key); } return intval($a[1]) - intval($b[1]); }); foreach ($timezones as $key => $value) { $zone = reset($value); // first timezone ID is our internal timezone $result[$zone] = preg_replace(array('~^.*/([^/]+)$~', '~_~'), array('$1', ' '), $value); // "humanize" city names if (array_key_exists(1, $offset = explode('|', $key)) === true) // "humanize" the offset { $offset = str_replace(' +00:00', '', sprintf('(UTC %+03d:%02u)', $offset[1] / 3600, abs($offset[1]) % 3600 / 60)); } if (asort($result[$zone]) === true) // sort city names { $result[$zone] = trim(sprintf('%s %s', $offset, implode(', ', $result[$zone]))); } } } return $result; }

There are lots of timezones that share the exact same offsets and DST timings ( Europe/Dublin , Europe/Lisbon and Europe/London to name a few), my algorithm groups these zones (using a special notation in the array keys dst?|offset|timestamp ) in the first timezone ID of that group and concatenates humanized transformations of the last (usually city level) segment of the timezone ID: 

 Array ( [Pacific/Midway] => (UTC -11:00) Midway, Niue, Pago Pago [America/Adak] => (UTC -10:00) Adak [Pacific/Fakaofo] => (UTC -10:00) Fakaofo, Honolulu, Johnston, Rarotonga, Tahiti [Pacific/Marquesas] => (UTC -10:30) Marquesas [America/Anchorage] => (UTC -09:00) Anchorage, Juneau, Nome, Sitka, Yakutat [Pacific/Gambier] => (UTC -09:00) Gambier [America/Dawson] => (UTC -08:00) Dawson, Los Angeles, Tijuana, Vancouver, Whitehorse [America/Santa_Isabel] => (UTC -08:00) Santa Isabel [America/Metlakatla] => (UTC -08:00) Metlakatla, Pitcairn [America/Dawson_Creek] => (UTC -07:00) Dawson Creek, Hermosillo, Phoenix [America/Chihuahua] => (UTC -07:00) Chihuahua, Mazatlan [America/Boise] => (UTC -07:00) Boise, Cambridge Bay, Denver, Edmonton, Inuvik, Ojinaga, Shiprock, Yellowknife [America/Chicago] => (UTC -06:00) Beulah, Center, Chicago, Knox, Matamoros, Menominee, New Salem, Rainy River, Rankin Inlet, Resolute, Tell City, Winnipeg [America/Belize] => (UTC -06:00) Belize, Costa Rica, El Salvador, Galapagos, Guatemala, Managua, Regina, Swift Current, Tegucigalpa [Pacific/Easter] => (UTC -06:00) Easter [America/Bahia_Banderas] => (UTC -06:00) Bahia Banderas, Cancun, Merida, Mexico City, Monterrey [America/Detroit] => (UTC -05:00) Detroit, Grand Turk, Indianapolis, Iqaluit, Louisville, Marengo, Monticello, Montreal, Nassau, New York, Nipigon, Pangnirtung, Petersburg, Thunder Bay, Toronto, Vevay, Vincennes, Winamac [America/Atikokan] => (UTC -05:00) Atikokan, Bogota, Cayman, Guayaquil, Jamaica, Lima, Panama, Port-au-Prince [America/Havana] => (UTC -05:00) Havana [America/Caracas] => (UTC -05:30) Caracas [America/Glace_Bay] => (UTC -04:00) Bermuda, Glace Bay, Goose Bay, Halifax, Moncton, Thule [Atlantic/Stanley] => (UTC -04:00) Stanley [America/Santiago] => (UTC -04:00) Palmer, Santiago [America/Anguilla] => (UTC -04:00) Anguilla, Antigua, Aruba, Barbados, Blanc-Sablon, Boa Vista, Curacao, Dominica, Eirunepe, Grenada, Guadeloupe, Guyana, Kralendijk, La Paz, Lower Princes, Manaus, Marigot, Martinique, Montserrat, Port of Spain, Porto Velho, Puerto Rico, Rio Branco, Santo Domingo, St Barthelemy, St Kitts, St Lucia, St Thomas, St Vincent, Tortola [America/Campo_Grande] => (UTC -04:00) Campo Grande, Cuiaba [America/Asuncion] => (UTC -04:00) Asuncion [America/St_Johns] => (UTC -04:30) St Johns [America/Sao_Paulo] => (UTC -03:00) Sao Paulo [America/Araguaina] => (UTC -03:00) Araguaina, Bahia, Belem, Buenos Aires, Catamarca, Cayenne, Cordoba, Fortaleza, Jujuy, La Rioja, Maceio, Mendoza, Paramaribo, Recife, Rio Gallegos, Rothera, Salta, San Juan, Santarem, Tucuman, Ushuaia [America/Montevideo] => (UTC -03:00) Montevideo [America/Godthab] => (UTC -03:00) Godthab [America/Argentina/San_Luis] => (UTC -03:00) San Luis [America/Miquelon] => (UTC -03:00) Miquelon [America/Noronha] => (UTC -02:00) Noronha, South Georgia [Atlantic/Cape_Verde] => (UTC -01:00) Cape Verde [America/Scoresbysund] => (UTC -01:00) Azores, Scoresbysund [Atlantic/Canary] => (UTC) Canary, Dublin, Faroe, Guernsey, Isle of Man, Jersey, Lisbon, London, Madeira [Africa/Abidjan] => (UTC) Abidjan, Accra, Bamako, Banjul, Bissau, Casablanca, Conakry, Dakar, Danmarkshavn, El Aaiun, Freetown, Lome, Monrovia, Nouakchott, Ouagadougou, Reykjavik, Sao Tome, St Helena [Africa/Algiers] => (UTC +01:00) Algiers, Bangui, Brazzaville, Douala, Kinshasa, Lagos, Libreville, Luanda, Malabo, Ndjamena, Niamey, Porto-Novo, Tunis [Africa/Ceuta] => (UTC +01:00) Amsterdam, Andorra, Belgrade, Berlin, Bratislava, Brussels, Budapest, Ceuta, Copenhagen, Gibraltar, Ljubljana, Longyearbyen, Luxembourg, Madrid, Malta, Monaco, Oslo, Paris, Podgorica, Prague, Rome, San Marino, Sarajevo, Skopje, Stockholm, Tirane, Vaduz, Vatican, Vienna, Warsaw, Zagreb, Zurich [Africa/Windhoek] => (UTC +01:00) Windhoek [Asia/Damascus] => (UTC +02:00) Damascus [Asia/Beirut] => (UTC +02:00) Beirut [Asia/Jerusalem] => (UTC +02:00) Jerusalem [Asia/Nicosia] => (UTC +02:00) Athens, Bucharest, Chisinau, Helsinki, Istanbul, Mariehamn, Nicosia, Riga, Sofia, Tallinn, Vilnius [Africa/Blantyre] => (UTC +02:00) Blantyre, Bujumbura, Cairo, Gaborone, Gaza, Harare, Hebron, Johannesburg, Kigali, Lubumbashi, Lusaka, Maputo, Maseru, Mbabane, Tripoli [Asia/Amman] => (UTC +02:00) Amman [Africa/Addis_Ababa] => (UTC +03:00) Addis Ababa, Aden, Antananarivo, Asmara, Baghdad, Bahrain, Comoro, Dar es Salaam, Djibouti, Juba, Kaliningrad, Kampala, Khartoum, Kiev, Kuwait, Mayotte, Minsk, Mogadishu, Nairobi, Qatar, Riyadh, Simferopol, Syowa, Uzhgorod, Zaporozhye [Asia/Tehran] => (UTC +03:30) Tehran [Asia/Yerevan] => (UTC +04:00) Yerevan [Asia/Dubai] => (UTC +04:00) Dubai, Mahe, Mauritius, Moscow, Muscat, Reunion, Samara, Tbilisi, Volgograd [Asia/Baku] => (UTC +04:00) Baku [Asia/Kabul] => (UTC +04:30) Kabul [Antarctica/Mawson] => (UTC +05:00) Aqtau, Aqtobe, Ashgabat, Dushanbe, Karachi, Kerguelen, Maldives, Mawson, Oral, Samarkand, Tashkent [Asia/Colombo] => (UTC +05:30) Colombo, Kolkata [Asia/Kathmandu] => (UTC +05:45) Kathmandu [Antarctica/Vostok] => (UTC +06:00) Almaty, Bishkek, Chagos, Dhaka, Qyzylorda, Thimphu, Vostok, Yekaterinburg [Asia/Rangoon] => (UTC +06:30) Cocos, Rangoon [Antarctica/Davis] => (UTC +07:00) Bangkok, Christmas, Davis, Ho Chi Minh, Hovd, Jakarta, Novokuznetsk, Novosibirsk, Omsk, Phnom Penh, Pontianak, Vientiane [Antarctica/Casey] => (UTC +08:00) Brunei, Casey, Choibalsan, Chongqing, Harbin, Hong Kong, Kashgar, Krasnoyarsk, Kuala Lumpur, Kuching, Macau, Makassar, Manila, Perth, Shanghai, Singapore, Taipei, Ulaanbaatar, Urumqi [Australia/Eucla] => (UTC +08:45) Eucla [Asia/Dili] => (UTC +09:00) Dili, Irkutsk, Jayapura, Palau, Pyongyang, Seoul, Tokyo [Australia/Adelaide] => (UTC +09:30) Adelaide, Broken Hill [Australia/Darwin] => (UTC +09:30) Darwin [Antarctica/DumontDUrville] => (UTC +10:00) Brisbane, Chuuk, DumontDUrville, Guam, Lindeman, Port Moresby, Saipan, Yakutsk [Australia/Currie] => (UTC +10:00) Currie, Hobart, Melbourne, Sydney [Australia/Lord_Howe] => (UTC +10:30) Lord Howe [Antarctica/Macquarie] => (UTC +11:00) Efate, Guadalcanal, Kosrae, Macquarie, Noumea, Pohnpei, Sakhalin, Vladivostok [Pacific/Norfolk] => (UTC +11:30) Norfolk [Antarctica/McMurdo] => (UTC +12:00) Auckland, McMurdo, South Pole [Asia/Anadyr] => (UTC +12:00) Anadyr, Fiji, Funafuti, Kamchatka, Kwajalein, Magadan, Majuro, Nauru, Tarawa, Wake, Wallis [Pacific/Chatham] => (UTC +12:45) Chatham [Pacific/Enderbury] => (UTC +13:00) Enderbury, Tongatapu [Pacific/Apia] => (UTC +13:00) Apia [Pacific/Kiritimati] => (UTC +14:00) Kiritimati )

Granted, the city concatenation is still pretty damn long but the list of unique (actual) timezones has dropped from 414 (or 415, if we consider the non-geographical UTC) to 75 – which is pretty good IMO and seems to reflect the list of "normalized" timezones Windows uses (also 75).

There are two big problems with this automated approach:

  1. the chosen timezone ID for a group of cities is the first in alphabetic order, this means that for (UTC) Canary, Dublin, Faroe, Guernsey, Isle of Man, Jersey, Lisbon, London, Madeira the timezone value will be Atlantic/Canary – while there shouldn't be anything wrong with that, it would make more sense to pick a timezone ID associated with a bigger city (like Europe/London )
  2. the concatenation of cities is clearly the biggest problem, there are just too many of them – one way to solve this issue would be by using array_slice($cities, 0, $maxCities) before imploding but this wouldn't have the city dimension into account, and for a limit of 4 Canary, Dublin, Faroe, Guernsey, Isle of Man, Jersey, Lisbon, London, Madeira would become Canary, Dublin, Faroe, Guernsey instead of the more logical Windows equivalent Dublin, Edinburgh, Lisbon, London .

This shouldn't be very useful as it it, but I thought I'd share – perhaps someone else can improve it.

I can think of a few options.

First being to populate the whole select list, and use a jQuery plugin like Chosen to populate the entire list. This would probably suck since your users might not even know all of the timezones.

Second option being to use JS to get the browser's local time in a hidden input field, and combine that with knowledge of the users IP to try to deduce the users location transparently. You could even display their assumed location on a map and ask them if you have the correct time.

Third option is to actually ask the user where they live. Country and postal code should probably be enough to get the timezone for most users. In edge cases you could ask the user to clarify.

Personally, I'd probably combine the first and second solution to make a select list display the regions you believe the user is closest to.

Perhaps we could use a pregenerated list like the one presented here: http://www.ultramegatech.com/blog/2009/04/working-with-time-zones-in-php

After thinking (and testing) a lot about this problem I've come to the conclusion that you can't use timezone short-lists for the simple fact that timezone rules are dynamic (more than you might expect – 4 timezones will have their rules changed this month) and groups/concatenations/abbreviations are static.

Here is the code for the approach I decided to stick with: 

 function Timezones($country = null, $continent = null) { $result = array(); if (is_array($timezones = DateTimeZone::listIdentifiers()) === true) { $timestamp = strtotime('-6 months', time()); if ((strlen($country) == 2) && (defined('DateTimeZone::PER_COUNTRY') === true)) { $timezones = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $country); } foreach (preg_grep('~' . preg_quote($continent, '~') . '/~i', $timezones) as $id) { $timezone = new DateTimeZone($id); if (is_array($transitions = $timezone->getTransitions()) === true) { while ((isset($result[$id]) !== true) && (is_null($transition = array_shift($transitions)) !== true)) { $result[$id] = (($transition['isdst'] !== true) && ($transition['ts'] >= $timestamp)) ? $transition['offset'] : null; } } } if (array_multisort($result, SORT_NUMERIC, preg_replace('~^[^/]+/~', '', array_keys($result)), SORT_REGULAR, $result) === true) { foreach ($result as $key => $value) { $result[$key] = sprintf('(GMT %+03d:%02u) %s', $value / 3600, abs($value) % 3600 / 60, ltrim(strstr($key, '/'), '/')); } } } return str_replace(array(' +00:00', '_', '/'), array('', ' ', ' - '), $result); }
  • supports filtering by country and continent simultaneously (as in US/America or US/Pacific)
  • the standard (raw) offset is dynamically calculated for each timezone
  • timezones are ordered by their offset first and then by their location
  • the timezone identifier is converted into a human readable representation

Demo at http://www.ideone.com/VYWtw and http://jsfiddle.net/hSxa8/embedded/result/ .

There is a list/reference provided in the answer to this question . It comes up with just 88 unique timezones that would make up your select list.

This has long been answered but, I wasn't satisfied with any of the answers that forced users to go through all the TZ entries php knows. Instead I created a more concise list that maps times like eastern time to America/New_York and includes special entries for odd locations like Arizona.

Github entry: https://github.com/ryanzor/timezone-dropdown

Demo of just selector: http://lifesnow.com/time-zone-dropdown/ 

 <?php /** * * This get's the timezone offset based on the olson code. * In this code it is used to find the offset between the given olson code and UTC, but can be used to convert other differences * * @param string $remote_tz TZ string * @param string $origin_tz TZ string, defaults to UTC * @return int offset in seconds */ function ln_get_timezone_offset($remote_tz, $origin_tz = 'UTC') { $origin_dtz = new DateTimeZone($origin_tz); $remote_dtz = new DateTimeZone($remote_tz); $origin_dt = new DateTime("now", $origin_dtz); $remote_dt = new DateTime("now", $remote_dtz); $offset = $remote_dtz->getOffset($remote_dt) - $origin_dtz->getOffset($origin_dt); return $offset; } /** * Converts a timezone difference to be displayed as GMT +/- * * @param string $timezone TZ time * @return string text with GMT */ function ln_get_timezone_offset_text($timezone){ $time = ln_get_timezone_offset($timezone); $minutesOffset = $time/60; $hours = floor(($minutesOffset)/60); $minutes = abs($minutesOffset%60); $minutesFormatted = sprintf('%02d', $minutes); $plus = ''; if($time >= 0){ $plus = '+'; } $GMToff = 'GMT '.$plus.$hours.':'.$minutesFormatted; return $GMToff; } /** * This is for formatting how the timezone option displays. * It can be converted to include current time, not include gmt or anything like that. * * @param string $timezone TZ time * @param string $text format select box option */ function ln_display_timezone_option($timezone, $text){ ?> <option value="<?php echo $timezone; ?>"><?php echo '('.ln_get_timezone_offset_text($timezone).') '.$text; ?></option> <?php } /** * The concise list of timezones. This generates the html wherever it is called */ function ln_display_timezone_selector(){ ?> <select name="timezoneSelectDropdown"> <?php ln_display_timezone_option('Pacific/Auckland', 'International Date Line West'); ln_display_timezone_option('Pacific/Midway', 'Midway Island, Samoa'); ln_display_timezone_option('US/Hawaii', 'Hawaii'); ln_display_timezone_option('US/Alaska', 'Alaska'); ln_display_timezone_option('US/Pacific', 'Pacific Time (US & Canada)'); ln_display_timezone_option('America/Tijuana', 'Tijuana, Baja California'); ln_display_timezone_option('America/Phoenix', 'Arizona'); ln_display_timezone_option('America/Chihuahua', 'Chihuahua, La Paz, Mazatlan'); ln_display_timezone_option('US/Mountain', 'Mountain Time (US & Canada)'); ln_display_timezone_option('America/Cancun', 'Central America'); ln_display_timezone_option('US/Central', 'Central Time (US & Canada)'); ln_display_timezone_option('America/Mexico_City', 'Guadalajara, Mexico City, Monterrey'); ln_display_timezone_option('Canada/Saskatchewan', 'Saskatchewan'); ln_display_timezone_option('America/Lima', 'Bogota, Lima, Quito, Rio Branco'); ln_display_timezone_option('US/Eastern', 'Eastern Time (US & Canada)'); ln_display_timezone_option('US/East-Indiana', 'Indiana (East)'); ln_display_timezone_option('Canada/Atlantic', 'Atlantic Time (Canada)'); ln_display_timezone_option('America/Caracas', 'Caracas, La Paz'); ln_display_timezone_option('America/Manaus', 'Manaus'); ln_display_timezone_option('America/Santiago', 'Santiago'); ln_display_timezone_option('Canada/Newfoundland', 'Newfoundland'); ln_display_timezone_option('America/Sao_Paulo', 'Brasilia'); ln_display_timezone_option('America/Argentina/Buenos_Aires', 'Buenos Aires, Georgetown'); ln_display_timezone_option('America/Godthab', 'Greenland'); ln_display_timezone_option('America/Montevideo', 'Montevideo'); ln_display_timezone_option('Atlantic/South_Georgia', 'Mid-Atlantic'); ln_display_timezone_option('Atlantic/Cape_Verde', 'Cape Verde Is.'); ln_display_timezone_option('Atlantic/Azores', 'Azores'); ln_display_timezone_option('Africa/Casablanca', 'Casablanca, Monrovia, Reykjavik'); ln_display_timezone_option('UTC', 'Greenwich Mean Time : Dublin, Edinburgh, Lisbon, London'); ln_display_timezone_option('Europe/Amsterdam', 'Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna'); ln_display_timezone_option('Europe/Belgrade', 'Belgrade, Bratislava, Budapest, Ljubljana, Prague'); ln_display_timezone_option('Europe/Brussels', 'Brussels, Copenhagen, Madrid, Paris'); ln_display_timezone_option('Europe/Sarajevo', 'Sarajevo, Skopje, Warsaw, Zagreb'); ln_display_timezone_option('Africa/Windhoek', 'West Central Africa'); ln_display_timezone_option('Asia/Amman', 'Amman'); ln_display_timezone_option('Europe/Athens', 'Athens, Bucharest, Istanbul'); ln_display_timezone_option('Asia/Beirut', 'Beirut'); ln_display_timezone_option('Africa/Cairo', 'Cairo'); ln_display_timezone_option('Africa/Harare', 'Harare, Pretoria'); ln_display_timezone_option('Europe/Helsinki', 'Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius'); ln_display_timezone_option('Asia/Jerusalem', 'Jerusalem'); ln_display_timezone_option('Europe/Minsk', 'Minsk'); ln_display_timezone_option('Africa/Windhoek', 'Windhoek'); ln_display_timezone_option('Asia/Kuwait', 'Kuwait, Riyadh, Baghdad'); ln_display_timezone_option('Europe/Moscow', 'Moscow, St. Petersburg, Volgograd'); ln_display_timezone_option('Africa/Nairobi', 'Nairobi'); ln_display_timezone_option('Asia/Tbilisi', 'Tbilisi'); ln_display_timezone_option('Asia/Tehran', 'Tehran'); ln_display_timezone_option('Asia/Muscat', 'Abu Dhabi, Muscat'); ln_display_timezone_option('Asia/Baku', 'Baku'); ln_display_timezone_option('Asia/Yerevan', 'Yerevan'); ln_display_timezone_option('Asia/Kabul', 'Kabul'); ln_display_timezone_option('Asia/Yekaterinburg', 'Yekaterinburg'); ln_display_timezone_option('Asia/Karachi', 'Islamabad, Karachi, Tashkent'); ln_display_timezone_option('Asia/Kolkata', 'Sri Jayawardenepura'); ln_display_timezone_option('Asia/Kolkata', 'Chennai, Kolkata, Mumbai, New Delhi'); ln_display_timezone_option('Asia/Kathmandu', 'Kathmandu'); ln_display_timezone_option('Asia/Almaty', 'Almaty, Novosibirsk'); ln_display_timezone_option('Asia/Dhaka', 'Astana, Dhaka'); ln_display_timezone_option('Asia/Rangoon', 'Yangon (Rangoon)'); ln_display_timezone_option('Asia/Bangkok', 'Bangkok, Hanoi, Jakarta'); ln_display_timezone_option('Asia/Krasnoyarsk', 'Krasnoyarsk'); ln_display_timezone_option('Asia/Shanghai', 'Beijing, Chongqing, Hong Kong, Urumqi'); ln_display_timezone_option('Asia/Singapore', 'Kuala Lumpur, Singapore'); ln_display_timezone_option('Asia/Irkutsk', 'Irkutsk, Ulaan Bataar'); ln_display_timezone_option('Australia/Perth', 'Perth'); ln_display_timezone_option('Asia/Taipei', 'Taipei'); ln_display_timezone_option('Asia/Tokyo', 'Osaka, Sapporo, Tokyo'); ln_display_timezone_option('Asia/Seoul', 'Seoul'); ln_display_timezone_option('Asia/Yakutsk', 'Yakutsk'); ln_display_timezone_option('Australia/Adelaide', 'Adelaide'); ln_display_timezone_option('Australia/Darwin', 'Darwin'); ln_display_timezone_option('Australia/Brisbane', 'Brisbane'); ln_display_timezone_option('Australia/Sydney', 'Canberra, Melbourne, Sydney'); ln_display_timezone_option('Australia/Hobart', 'Hobart'); ln_display_timezone_option('Pacific/Guam', 'Guam, Port Moresby'); ln_display_timezone_option('Asia/Vladivostok', 'Vladivostok'); ln_display_timezone_option('Asia/Magadan', 'Magadan, Solomon Is., New Caledonia'); ln_display_timezone_option('Pacific/Auckland', 'Auckland, Wellington'); ln_display_timezone_option('Pacific/Fiji', 'Fiji, Kamchatka, Marshall Is.'); ln_display_timezone_option('Pacific/Tongatapu', 'Nuku\'alofa'); ?> </select> <?php } ?>
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