我正在使用此下拉列表按UTC偏移量存储时区：

<select id="timezone" name="timezone" >
<option value="-12">[UTC - 12] Baker Island Time</option>
<option value="-11">[UTC - 11] Niue Time, Samoa Standard Time</option>
<option value="-10">[UTC - 10] Hawaii-Aleutian Standard Time, Cook Island Time</option>
<option value="-9.5">[UTC - 9:30] Marquesas Islands Time</option>
<option value="-9">[UTC - 9] Alaska Standard Time, Gambier Island Time</option>
<option value="-8">[UTC - 8] Pacific Standard Time</option>
<option value="-7">[UTC - 7] Mountain Standard Time</option>
<option value="-6">[UTC - 6] Central Standard Time</option>
<option value="-5">[UTC - 5] Eastern Standard Time</option>
<option value="-4.5">[UTC - 4:30] Venezuelan Standard Time</option>
<option value="-4">[UTC - 4] Atlantic Standard Time</option>
<option value="-3.5">[UTC - 3:30] Newfoundland Standard Time</option>
<option value="-3">[UTC - 3] Amazon Standard Time, Central Greenland Time</option>
<option value="-2">[UTC - 2] Fernando de Noronha Time, South Georgia &amp; the South Sandwich Islands Time</option>
<option value="-1">[UTC - 1] Azores Standard Time, Cape Verde Time, Eastern Greenland Time</option>
<option value="0">[UTC] Western European Time, Greenwich Mean Time</option>
<option value="1">[UTC + 1] Central European Time, West African Time</option>
<option value="2">[UTC + 2] Eastern European Time, Central African Time</option>
<option value="3">[UTC + 3] Moscow Standard Time, Eastern African Time</option>
<option value="3.5">[UTC + 3:30] Iran Standard Time</option>
<option value="4">[UTC + 4] Gulf Standard Time, Samara Standard Time</option>
<option value="4.5">[UTC + 4:30] Afghanistan Time</option>
<option value="5">[UTC + 5] Pakistan Standard Time, Yekaterinburg Standard Time</option>
<option value="5.5">[UTC + 5:30] Indian Standard Time, Sri Lanka Time</option>
<option value="5.75">[UTC + 5:45] Nepal Time</option>
<option value="6">[UTC + 6] Bangladesh Time, Bhutan Time, Novosibirsk Standard Time</option>
<option value="6.5">[UTC + 6:30] Cocos Islands Time, Myanmar Time</option>
<option value="7">[UTC + 7] Indochina Time, Krasnoyarsk Standard Time</option>
<option value="8">[UTC + 8] Chinese Standard Time, Australian Western Standard Time, Irkutsk Standard Time</option>
<option value="8.75">[UTC + 8:45] Southeastern Western Australia Standard Time</option>
<option value="9">[UTC + 9] Japan Standard Time, Korea Standard Time, Chita Standard Time</option>
<option value="9.5">[UTC + 9:30] Australian Central Standard Time</option>
<option value="10">[UTC + 10] Australian Eastern Standard Time, Vladivostok Standard Time</option>
<option value="10.5">[UTC + 10:30] Lord Howe Standard Time</option>
<option value="11">[UTC + 11] Solomon Island Time, Magadan Standard Time</option>
<option value="11.5">[UTC + 11:30] Norfolk Island Time</option>
<option value="12">[UTC + 12] New Zealand Time, Fiji Time, Kamchatka Standard Time</option>
<option value="12.75">[UTC + 12:45] Chatham Islands Time</option>
<option value="13">[UTC + 13] Tonga Time, Phoenix Islands Time</option>
<option value="14">[UTC + 14] Line Island Time</option>

使用PHP，我实际上没有最简单的选项将它们转换为时区缩写，我唯一以编程方式进行选择的方法是对约400个时区缩写进行排序。有人知道每个时区是什么以及夏时制进行时它们是什么的下拉列表吗？（我假设我需要手动定义两个列表）

编辑：将每个时区的此列表解析为单个缩写，但是它们没有“受欢迎”的缩写。

我的新清单

[-12] => kwat
[-11] => bst
[-10] => ahst
[-9.5] => ckhst
[-9] => ahdt
[-8] => akdt
[-7] => east
[-6] => cst
[-5] => act
[-4.5] => ant
[-4] => acst
[-3.5] => negt
[-3] => adt
[-2] => addt
[-1] => azost
[-0] => azomt
[1] => bst
[2] => bdst
[3] => amt
[3.5] => irst
[4] => adt
[4.5] => aft
[5] => aktt
[5.5] => ist
[5.75] => npt
[6] => aktst
[6.5] => burt
[7] => almst
[8] => bnt
[8.75] => cwst
[9] => cdt
[9.5] => cast
[10] => chost
[10.5] => cst
[11] => anat
[11.5] => lhst
[12] => anast
[12.75] => chast
[13] => anast
[14] => anast

Code:

$abbr = DateTimeZone::listAbbreviations();

$offsets=array('-12','-11','-10','-9.5','-9','-8','-7','-6',
    '-5','-4.5','-4','-3.5','-3','-2','-1','-0','1','2','3','3.5',
    '4','4.5','5','5.5','5.75','6','6.5','7','8','8.75','9','9.5',
    '10','10.5','11','11.5','12','12.75','13','14');
$new = array();
$count = 0;
$found = false;
while($count < count($offsets))
{
    foreach($abbr as $k => $v)
    {
        foreach($v as $tz)
        {
            if($tz['offset'] == $offsets[$count]*3600)
            {
                $new[$offsets[$count]] = $k;
                $found = true;
                break;
            }
        }
        if($found)
        {
            $found = false;
            break;
        }
    }
    $count++;
}
print_r($new);