Created
July 12, 2011 16:27
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generate timezone select
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<?php | |
/** | |
* returns a HTML formated TimeZone select | |
* | |
* @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 .= '<option value="' . $value . '"' . $selected . '>' | |
. $displayValue | |
. '</option>' . 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; | |
} | |
?> | |
<label for="timeZone">Timezone<br /> | |
<select id="timeZone" name="timeZone"> | |
<?php echo displayTimeZoneSelect("Europe/Amsterdam");?> | |
</select> | |
</label> |
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