diff -r 1d6e762433fe -r 0acb8d9a3194 timezone.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/timezone.php	Mon Aug 25 12:34:26 2008 -0400
@@ -0,0 +1,510 @@
+<?php
+
+define('COOKIE_NAME', 'db_stats_tz');
+
+$tz = ( isset($_COOKIE[COOKIE_NAME]) ) ? $_COOKIE[COOKIE_NAME] : 'UTC';
+$zones = get_raw_timezone_list();
+if ( in_array($tz, $zones) )
+{
+  date_default_timezone_set($tz);
+}
+
+/**
+ * List of standard time zones.
+ * @return array
+ */
+
+function get_timezone_list()
+{
+  static $zones = false;
+  if ( !$zones )
+  {
+    $zonelist = get_raw_timezone_list();
+    $zones = array();
+    foreach ( $zonelist as $rawzone )
+    {
+      @list($region, $area, $city) = explode('/', $rawzone);
+      if ( empty($area) )
+      {
+        $zones[$region] = $region;
+        continue;
+      }
+      if ( !isset($zones[$region]) )
+        $zones[$region] = array();
+      
+      if ( empty($city) )
+      {
+        $zones[$region][] = $area;
+      }
+      else
+      {
+        if ( !isset($zones[$region][$area]) || ( isset($zones[$region][$area]) && !is_array($zones[$region][$area]) ) )
+        {
+          $zones[$region][$area] = array();
+        }
+        $zones[$region][$area][] = $city;
+      }
+    }
+  }
+  return $zones;
+}
+
+/**
+ * Get the raw, flat array of time zones.
+ * @return array
+ */
+
+function get_raw_timezone_list()
+{
+  return array(
+    'UTC',
+    'Africa/Abidjan',
+    'Africa/Accra',
+    'Africa/Addis_Ababa',
+    'Africa/Algiers',
+    'Africa/Asmara',
+    'Africa/Asmera',
+    'Africa/Bamako',
+    'Africa/Bangui',
+    'Africa/Banjul',
+    'Africa/Bissau',
+    'Africa/Blantyre',
+    'Africa/Brazzaville',
+    'Africa/Bujumbura',
+    'Africa/Cairo',
+    'Africa/Casablanca',
+    'Africa/Ceuta',
+    'Africa/Conakry',
+    'Africa/Dakar',
+    'Africa/Dar_es_Salaam',
+    'Africa/Djibouti',
+    'Africa/Douala',
+    'Africa/El_Aaiun',
+    'Africa/Freetown',
+    'Africa/Gaborone',
+    'Africa/Harare',
+    'Africa/Johannesburg',
+    'Africa/Kampala',
+    'Africa/Khartoum',
+    'Africa/Kigali',
+    'Africa/Kinshasa',
+    'Africa/Lagos',
+    'Africa/Libreville',
+    'Africa/Lome',
+    'Africa/Luanda',
+    'Africa/Lubumbashi',
+    'Africa/Lusaka',
+    'Africa/Malabo',
+    'Africa/Maputo',
+    'Africa/Maseru',
+    'Africa/Mbabane',
+    'Africa/Mogadishu',
+    'Africa/Monrovia',
+    'Africa/Nairobi',
+    'Africa/Ndjamena',
+    'Africa/Niamey',
+    'Africa/Nouakchott',
+    'Africa/Ouagadougou',
+    'Africa/Porto-Novo',
+    'Africa/Sao_Tome',
+    'Africa/Timbuktu',
+    'Africa/Tripoli',
+    'Africa/Tunis',
+    'Africa/Windhoek',
+    'America/Adak',
+    'America/Anchorage',
+    'America/Anguilla',
+    'America/Antigua',
+    'America/Araguaina',
+    'America/Argentina/Buenos_Aires',
+    'America/Argentina/Catamarca',
+    'America/Argentina/ComodRivadavia',
+    'America/Argentina/Cordoba',
+    'America/Argentina/Jujuy',
+    'America/Argentina/La_Rioja',
+    'America/Argentina/Mendoza',
+    'America/Argentina/Rio_Gallegos',
+    'America/Argentina/San_Juan',
+    'America/Argentina/San_Luis',
+    'America/Argentina/Tucuman',
+    'America/Argentina/Ushuaia',
+    'America/Aruba',
+    'America/Asuncion',
+    'America/Atikokan',
+    'America/Atka',
+    'America/Bahia',
+    'America/Barbados',
+    'America/Belem',
+    'America/Belize',
+    'America/Blanc-Sablon',
+    'America/Boa_Vista',
+    'America/Bogota',
+    'America/Boise',
+    'America/Buenos_Aires',
+    'America/Cambridge_Bay',
+    'America/Campo_Grande',
+    'America/Cancun',
+    'America/Caracas',
+    'America/Catamarca',
+    'America/Cayenne',
+    'America/Cayman',
+    'America/Chicago',
+    'America/Chihuahua',
+    'America/Coral_Harbour',
+    'America/Cordoba',
+    'America/Costa_Rica',
+    'America/Cuiaba',
+    'America/Curacao',
+    'America/Danmarkshavn',
+    'America/Dawson',
+    'America/Dawson_Creek',
+    'America/Denver',
+    'America/Detroit',
+    'America/Dominica',
+    'America/Edmonton',
+    'America/Eirunepe',
+    'America/El_Salvador',
+    'America/Ensenada',
+    'America/Fort_Wayne',
+    'America/Fortaleza',
+    'America/Glace_Bay',
+    'America/Godthab',
+    'America/Goose_Bay',
+    'America/Grand_Turk',
+    'America/Grenada',
+    'America/Guadeloupe',
+    'America/Guatemala',
+    'America/Guayaquil',
+    'America/Guyana',
+    'America/Halifax',
+    'America/Havana',
+    'America/Hermosillo',
+    'America/Indiana/Indianapolis',
+    'America/Indiana/Knox',
+    'America/Indiana/Marengo',
+    'America/Indiana/Petersburg',
+    'America/Indiana/Tell_City',
+    'America/Indiana/Vevay',
+    'America/Indiana/Vincennes',
+    'America/Indiana/Winamac',
+    'America/Indianapolis',
+    'America/Inuvik',
+    'America/Iqaluit',
+    'America/Jamaica',
+    'America/Jujuy',
+    'America/Juneau',
+    'America/Kentucky/Louisville',
+    'America/Kentucky/Monticello',
+    'America/Knox_IN',
+    'America/La_Paz',
+    'America/Lima',
+    'America/Los_Angeles',
+    'America/Louisville',
+    'America/Maceio',
+    'America/Managua',
+    'America/Manaus',
+    'America/Marigot',
+    'America/Martinique',
+    'America/Mazatlan',
+    'America/Mendoza',
+    'America/Menominee',
+    'America/Merida',
+    'America/Mexico_City',
+    'America/Miquelon',
+    'America/Moncton',
+    'America/Monterrey',
+    'America/Montevideo',
+    'America/Montreal',
+    'America/Montserrat',
+    'America/Nassau',
+    'America/New_York',
+    'America/Nipigon',
+    'America/Nome',
+    'America/Noronha',
+    'America/North_Dakota/Center',
+    'America/North_Dakota/New_Salem',
+    'America/Panama',
+    'America/Pangnirtung',
+    'America/Paramaribo',
+    'America/Phoenix',
+    'America/Port-au-Prince',
+    'America/Port_of_Spain',
+    'America/Porto_Acre',
+    'America/Porto_Velho',
+    'America/Puerto_Rico',
+    'America/Rainy_River',
+    'America/Rankin_Inlet',
+    'America/Recife',
+    'America/Regina',
+    'America/Resolute',
+    'America/Rio_Branco',
+    'America/Rosario',
+    'America/Santiago',
+    'America/Santo_Domingo',
+    'America/Sao_Paulo',
+    'America/Scoresbysund',
+    'America/Shiprock',
+    'America/St_Barthelemy',
+    'America/St_Johns',
+    'America/St_Kitts',
+    'America/St_Lucia',
+    'America/St_Thomas',
+    'America/St_Vincent',
+    'America/Swift_Current',
+    'America/Tegucigalpa',
+    'America/Thule',
+    'America/Thunder_Bay',
+    'America/Tijuana',
+    'America/Toronto',
+    'America/Tortola',
+    'America/Vancouver',
+    'America/Virgin',
+    'America/Whitehorse',
+    'America/Winnipeg',
+    'America/Yakutat',
+    'America/Yellowknife',
+    'Antarctica/Casey',
+    'Antarctica/Davis',
+    'Antarctica/DumontDUrville',
+    'Antarctica/Mawson',
+    'Antarctica/McMurdo',
+    'Antarctica/Palmer',
+    'Antarctica/Rothera',
+    'Antarctica/South_Pole',
+    'Antarctica/Syowa',
+    'Antarctica/Vostok',
+    'Arctic/Longyearbyen',
+    'Asia/Aden',
+    'Asia/Almaty',
+    'Asia/Amman',
+    'Asia/Anadyr',
+    'Asia/Aqtau',
+    'Asia/Aqtobe',
+    'Asia/Ashgabat',
+    'Asia/Ashkhabad',
+    'Asia/Baghdad',
+    'Asia/Bahrain',
+    'Asia/Baku',
+    'Asia/Bangkok',
+    'Asia/Beirut',
+    'Asia/Bishkek',
+    'Asia/Brunei',
+    'Asia/Calcutta',
+    'Asia/Choibalsan',
+    'Asia/Chongqing',
+    'Asia/Chungking',
+    'Asia/Colombo',
+    'Asia/Dacca',
+    'Asia/Damascus',
+    'Asia/Dhaka',
+    'Asia/Dili',
+    'Asia/Dubai',
+    'Asia/Dushanbe',
+    'Asia/Gaza',
+    'Asia/Harbin',
+    'Asia/Ho_Chi_Minh',
+    'Asia/Hong_Kong',
+    'Asia/Hovd',
+    'Asia/Irkutsk',
+    'Asia/Istanbul',
+    'Asia/Jakarta',
+    'Asia/Jayapura',
+    'Asia/Jerusalem',
+    'Asia/Kabul',
+    'Asia/Kamchatka',
+    'Asia/Karachi',
+    'Asia/Kashgar',
+    'Asia/Katmandu',
+    'Asia/Kolkata',
+    'Asia/Krasnoyarsk',
+    'Asia/Kuala_Lumpur',
+    'Asia/Kuching',
+    'Asia/Kuwait',
+    'Asia/Macao',
+    'Asia/Macau',
+    'Asia/Magadan',
+    'Asia/Makassar',
+    'Asia/Manila',
+    'Asia/Muscat',
+    'Asia/Nicosia',
+    'Asia/Novosibirsk',
+    'Asia/Omsk',
+    'Asia/Oral',
+    'Asia/Phnom_Penh',
+    'Asia/Pontianak',
+    'Asia/Pyongyang',
+    'Asia/Qatar',
+    'Asia/Qyzylorda',
+    'Asia/Rangoon',
+    'Asia/Riyadh',
+    'Asia/Saigon',
+    'Asia/Sakhalin',
+    'Asia/Samarkand',
+    'Asia/Seoul',
+    'Asia/Shanghai',
+    'Asia/Singapore',
+    'Asia/Taipei',
+    'Asia/Tashkent',
+    'Asia/Tbilisi',
+    'Asia/Tehran',
+    'Asia/Tel_Aviv',
+    'Asia/Thimbu',
+    'Asia/Thimphu',
+    'Asia/Tokyo',
+    'Asia/Ujung_Pandang',
+    'Asia/Ulaanbaatar',
+    'Asia/Ulan_Bator',
+    'Asia/Urumqi',
+    'Asia/Vientiane',
+    'Asia/Vladivostok',
+    'Asia/Yakutsk',
+    'Asia/Yekaterinburg',
+    'Asia/Yerevan',
+    'Atlantic/Azores',
+    'Atlantic/Bermuda',
+    'Atlantic/Canary',
+    'Atlantic/Cape_Verde',
+    'Atlantic/Faeroe',
+    'Atlantic/Faroe',
+    'Atlantic/Jan_Mayen',
+    'Atlantic/Madeira',
+    'Atlantic/Reykjavik',
+    'Atlantic/South_Georgia',
+    'Atlantic/St_Helena',
+    'Atlantic/Stanley',
+    'Australia/ACT',
+    'Australia/Adelaide',
+    'Australia/Brisbane',
+    'Australia/Broken_Hill',
+    'Australia/Canberra',
+    'Australia/Currie',
+    'Australia/Darwin',
+    'Australia/Eucla',
+    'Australia/Hobart',
+    'Australia/LHI',
+    'Australia/Lindeman',
+    'Australia/Lord_Howe',
+    'Australia/Melbourne',
+    'Australia/North',
+    'Australia/NSW',
+    'Australia/Perth',
+    'Australia/Queensland',
+    'Australia/South',
+    'Australia/Sydney',
+    'Australia/Tasmania',
+    'Australia/Victoria',
+    'Australia/West',
+    'Australia/Yancowinna',
+    'Europe/Amsterdam',
+    'Europe/Andorra',
+    'Europe/Athens',
+    'Europe/Belfast',
+    'Europe/Belgrade',
+    'Europe/Berlin',
+    'Europe/Bratislava',
+    'Europe/Brussels',
+    'Europe/Bucharest',
+    'Europe/Budapest',
+    'Europe/Chisinau',
+    'Europe/Copenhagen',
+    'Europe/Dublin',
+    'Europe/Gibraltar',
+    'Europe/Guernsey',
+    'Europe/Helsinki',
+    'Europe/Isle_of_Man',
+    'Europe/Istanbul',
+    'Europe/Jersey',
+    'Europe/Kaliningrad',
+    'Europe/Kiev',
+    'Europe/Lisbon',
+    'Europe/Ljubljana',
+    'Europe/London',
+    'Europe/Luxembourg',
+    'Europe/Madrid',
+    'Europe/Malta',
+    'Europe/Mariehamn',
+    'Europe/Minsk',
+    'Europe/Monaco',
+    'Europe/Moscow',
+    'Europe/Nicosia',
+    'Europe/Oslo',
+    'Europe/Paris',
+    'Europe/Podgorica',
+    'Europe/Prague',
+    'Europe/Riga',
+    'Europe/Rome',
+    'Europe/Samara',
+    'Europe/San_Marino',
+    'Europe/Sarajevo',
+    'Europe/Simferopol',
+    'Europe/Skopje',
+    'Europe/Sofia',
+    'Europe/Stockholm',
+    'Europe/Tallinn',
+    'Europe/Tirane',
+    'Europe/Tiraspol',
+    'Europe/Uzhgorod',
+    'Europe/Vaduz',
+    'Europe/Vatican',
+    'Europe/Vienna',
+    'Europe/Vilnius',
+    'Europe/Volgograd',
+    'Europe/Warsaw',
+    'Europe/Zagreb',
+    'Europe/Zaporozhye',
+    'Europe/Zurich',
+    'Indian/Antananarivo',
+    'Indian/Chagos',
+    'Indian/Christmas',
+    'Indian/Cocos',
+    'Indian/Comoro',
+    'Indian/Kerguelen',
+    'Indian/Mahe',
+    'Indian/Maldives',
+    'Indian/Mauritius',
+    'Indian/Mayotte',
+    'Indian/Reunion',
+    'Pacific/Apia',
+    'Pacific/Auckland',
+    'Pacific/Chatham',
+    'Pacific/Easter',
+    'Pacific/Efate',
+    'Pacific/Enderbury',
+    'Pacific/Fakaofo',
+    'Pacific/Fiji',
+    'Pacific/Funafuti',
+    'Pacific/Galapagos',
+    'Pacific/Gambier',
+    'Pacific/Guadalcanal',
+    'Pacific/Guam',
+    'Pacific/Honolulu',
+    'Pacific/Johnston',
+    'Pacific/Kiritimati',
+    'Pacific/Kosrae',
+    'Pacific/Kwajalein',
+    'Pacific/Majuro',
+    'Pacific/Marquesas',
+    'Pacific/Midway',
+    'Pacific/Nauru',
+    'Pacific/Niue',
+    'Pacific/Norfolk',
+    'Pacific/Noumea',
+    'Pacific/Pago_Pago',
+    'Pacific/Palau',
+    'Pacific/Pitcairn',
+    'Pacific/Ponape',
+    'Pacific/Port_Moresby',
+    'Pacific/Rarotonga',
+    'Pacific/Saipan',
+    'Pacific/Samoa',
+    'Pacific/Tahiti',
+    'Pacific/Tarawa',
+    'Pacific/Tongatapu',
+    'Pacific/Truk',
+    'Pacific/Wake',
+    'Pacific/Wallis',
+    'Pacific/Yap'
+  );
+}
+
+?>