public static function get_nearest_timezone($cur_lat, $cur_long, $country_code = '')
{
$timezone_ids = $country_code ? DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, $country_code) : DateTimeZone::listIdentifiers();
if ($timezone_ids && is_array($timezone_ids) && isset($timezone_ids[0])) {
$time_zone = '';
$tz_distance = 0;
//only one identifier?
if (count($timezone_ids) == 1) {
$time_zone = $timezone_ids[0];
} else {
foreach ($timezone_ids as $timezone_id) {
$timezone = new DateTimeZone($timezone_id);
$location = $timezone->getLocation();
$tz_lat = $location['latitude'];
$tz_long = $location['longitude'];
$theta = $cur_long - $tz_long;
$distance = sin(deg2rad($cur_lat)) * sin(deg2rad($tz_lat)) + cos(deg2rad($cur_lat)) * cos(deg2rad($tz_lat)) * cos(deg2rad($theta));
$distance = acos($distance);
$distance = abs(rad2deg($distance));
// echo '<br />'.$timezone_id.' '.$distance;
if (!$time_zone || $tz_distance > $distance) {
$time_zone = $timezone_id;
$tz_distance = $distance;
}
}
}
return $time_zone;
}
return 'unknown';
}
/**
Return additional information for specified Unix timezone
@return array
@param $id string
@private
**/
private static function tzdata($id)
{
$ref = new DateTimeZone($id);
$loc = $ref->getLocation();
$now = time();
$trn = $ref->getTransitions($now, $now);
return array('offset' => $ref->getOffset(new DateTime('now', new DateTimeZone('GMT'))) / 3600, 'country' => $loc['country_code'], 'latitude' => $loc['latitude'], 'longitude' => $loc['longitude'], 'dst' => $trn[0]['isdst']);
}
/**
* Return information about specified Unix time zone
* @return array
* @param $zone string
**/
function tzinfo($zone)
{
$ref = new \DateTimeZone($zone);
$loc = $ref->getLocation();
$trn = $ref->getTransitions($now = time(), $now);
$out = array('offset' => $ref->getOffset(new \DateTime('now', new \DateTimeZone('GMT'))) / 3600, 'country' => $loc['country_code'], 'latitude' => $loc['latitude'], 'longitude' => $loc['longitude'], 'dst' => $trn[0]['isdst']);
unset($ref);
return $out;
}
/**
* Gets the timezone that is closest to the given coordinates
*
* @param float $lag
* @param float $lng
* @return DateTimeZone Timezone object
*/
public static function timezoneByCoordinates($lat, $lng)
{
$current = ['timezone' => null, 'distance' => 0];
$identifiers = DateTimeZone::listIdentifiers();
foreach ($identifiers as $identifier) {
$timezone = new DateTimeZone($identifier);
$location = $timezone->getLocation();
$point = ['lat' => $location['latitude'], 'lng' => $location['longitude']];
$distance = (int) GeocodeLib::calculateDistance(compact('lat', 'lng'), $point);
if (!$current['distance'] || $distance < $current['distance']) {
$current = ['timezone' => $identifier, 'distance' => $distance];
}
}
return $current['timezone'];
}
public static function timezone($latitude, $longitude)
{
$alltimezones = DateTimeZone::listIdentifiers();
$variances = array();
//calculate for all timezones the system know
foreach ($alltimezones as $timezone) {
$datetimezoneobj = new DateTimeZone($timezone);
$locationinformations = $datetimezoneobj->getLocation();
$latitudeoftimezone = $locationinformations['latitude'];
$longitudeoftimezone = $locationinformations['longitude'];
$variances[abs($latitudeoftimezone - $latitude) + abs($longitudeoftimezone - $longitude)] = $timezone;
}
//sort array and return the timezone with the smallest difference
ksort($variances);
reset($variances);
return current($variances);
}
/**
* Attempts to find the closest timezone by coordinates
*
* @static
* @param $lat
* @param $lng
*/
function getClosestTimezone($lat, $lng)
{
$diffs = array();
foreach (DateTimeZone::listIdentifiers() as $timezoneID) {
$timezone = new DateTimeZone($timezoneID);
$location = $timezone->getLocation();
$tLat = $location['latitude'];
$tLng = $location['longitude'];
$diffLat = abs($lat - $tLat);
$diffLng = abs($lng - $tLng);
$diff = $diffLat + $diffLng;
$diffs[$timezoneID] = $diff;
}
//asort($diffs);
$timezone = array_keys($diffs, min($diffs));
return $timezone[0];
}
function calculate_sun_rise_set()
{
$tzone = date_default_timezone_get();
if ($tzone == '') {
$tzone = 'Europe/Berlin';
}
$tz = new DateTimeZone($tzone);
$loc = $tz->getLocation();
$sun_info = date_sun_info(time(), $loc['latitude'], $loc['longitude']);
//returns sunrise, sunset, ...
//echo "Sunrise: " . date("H:i:s", $sun_info['sunrise']) . "\n";
//echo "Sunset: " . date("H:i:s", $sun_info['sunset']) . "\n";
//update sunrise
$sql = query("SELECT id,suninfo,name FROM timer WHERE suninfo='sunset' OR suninfo='sunrise'");
while ($row = fetch($sql)) {
//echo $row['suninfo'] . $row['name'] ;
if ($row['suninfo'] == 'sunrise') {
$sqlset = query("UPDATE timer SET time = '" . date("H:i", $sun_info['sunrise']) . "', hour ='" . date("H", $sun_info['sunrise']) . "', minute ='" . date("i", $sun_info['sunrise']) . "' WHERE id = '" . $row['id'] . "'");
}
if ($row['suninfo'] == 'sunset') {
$sqlset = query("UPDATE timer SET time = '" . date("H:i", $sun_info['sunset']) . "', hour ='" . date("H", $sun_info['sunset']) . "', minute ='" . date("i", $sun_info['sunset']) . "' WHERE id = '" . $row['id'] . "'");
}
}
}
/**
*
* @return string $timezone
*/
public static function findTimezone()
{
$locale = self::getLocale();
if (!$locale->getRegion()) {
try {
$locale = new Zend_Locale($locale . '_' . strtoupper($locale));
} catch (Exception $e) {
}
}
$region = $locale->getRegion();
if ($region) {
$timezoneList = Zend_Locale::getTranslationList('TimezoneToTerritory');
if (isset($timezoneList[$region])) {
$timezone = $timezoneList[$region];
return $timezone;
}
}
$httpCookieObject = new Zend_Http_Cookie('timezone', null, Zmz_Host::getHostname());
$cookie = new Zmz_Cookie($httpCookieObject);
$timezoneCookieValue = $cookie->getValue();
$timezoneArray = @explode('/', $timezoneCookieValue);
// check valid cookie
if (isset($timezoneArray[0]) && isset($timezoneArray[1])) {
$offset = intval($timezoneArray[0]);
$dts = intval($timezoneArray[1]);
$guessedTimezone = timezone_name_from_abbr('', $offset, $dts);
try {
$tz = new DateTimeZone($guessedTimezone);
$guessedLocation = $tz->getLocation();
// $guessedLocationCode = $guessedLocation['country_code'];
$timezone = $guessedTimezone;
} catch (Exception $e) {
$timezone = self::$defaultTimezone;
}
} else {
$timezone = self::$defaultTimezone;
}
return $timezone;
}
echo "<br/>";
$winter = new DateTime('2010-12-21', new DateTimeZone('America/New_York'));
$summer = new DateTime('2008-06-21', new DateTimeZone('America/New_York'));
echo $winter->getOffset() . "\n";
echo $summer->getOffset() . "\n";
echo "<br/>";
$date = new DateTime();
echo $date->getTimestamp();
echo "<br/>";
$date = new DateTime(null, new DateTimeZone('Europe/London'));
$tz = $date->getTimezone();
echo $tz->getName();
echo "<br/>";
echo "<pre>";
$tz = new DateTimeZone("Europe/Prague");
print_r($tz->getLocation());
print_r(timezone_location_get($tz));
//checkdate用于验证一个验证一个格里高里日期(就是公历)
var_dump(checkdate(12, 31, 2000));
var_dump(checkdate(2, 29, 2001));
echo "<br/>";
echo "<pre>";
print_r(date_parse("2006-12-12 10:00:00.5"));
echo "<br/>";
echo "<pre>";
$today = getdate();
print_r($today);
//返回Uinx时间戳
echo "<br/>";
//hour,minute,second,month,day,year
echo mktime(0, 0, 0, 1, 1, 2000);
<?php
$timezone = new DateTimeZone('Europe/Rome');
echo $timezone->getName();
print_r($timezone->getLocation());
?>
/**
* Convert an event object to be used on the client
*/
private function _client_event($event, $addcss = false)
{
$cal_tz = $this->timezone->getName();
if (!$event['allday'] && $event['tzname'] && $cal_tz != $event['tzname']) {
$cal_tz = new DateTimeZone($cal_tz);
$event_tz = new DateTimeZone($event['tzname']);
$event['tzinfo'] = $event_tz->getLocation();
$cal_dt = new DateTime(date('Y-m-d H:i:s', $event['start']->format('U')), $cal_tz);
$event_dt = new DateTime(date('Y-m-d H:i:s', $event['start']->format('U')), $event_tz);
$event['tzadjust'] = -($cal_dt->getOffset() - $event_dt->getOffset());
} else {
$event['tzadjust'] = 0;
}
// compose a human readable strings for alarms_text and recurrence_text
if ($event['alarms']) {
$event['alarms_text'] = libcalendaring::alarms_text($event['alarms']);
}
if ($event['recurrence']) {
$event['recurrence_text'] = $this->_recurrence_text($event['recurrence']);
if ($event['recurrence']['UNTIL']) {
$event['recurrence']['UNTIL'] = $this->lib->adjust_timezone($event['recurrence']['UNTIL'], $event['allday'])->format('c');
}
unset($event['recurrence']['EXCEPTIONS']);
// format RDATE values
if (is_array($event['recurrence']['RDATE'])) {
$libcal = $this->lib;
$event['recurrence']['RDATE'] = array_map(function ($rdate) use($libcal) {
return $libcal->adjust_timezone($rdate, true)->format('c');
}, $event['recurrence']['RDATE']);
}
}
foreach ((array) $event['attachments'] as $k => $attachment) {
$event['attachments'][$k]['classname'] = rcube_utils::file2class($attachment['mimetype'], $attachment['name']);
}
// check for organizer in attendees list
$organizer = null;
foreach ((array) $event['attendees'] as $i => $attendee) {
if (isset($attendee['role']) && $attendee['role'] == 'ORGANIZER') {
$organizer = $attendee;
break;
}
}
if ($organizer === null && !empty($event['organizer'])) {
$organizer = $event['organizer'];
$organizer['role'] = 'ORGANIZER';
if (!is_array($event['attendees'])) {
$event['attendees'] = array();
}
array_unshift($event['attendees'], $organizer);
}
// mapping url => vurl because of the fullcalendar client script
$event['vurl'] = $event['url'];
unset($event['url']);
// Begin mod by Rosali (https://issues.kolab.org/show_bug.cgi?id=3481)
// Fix 1 second issue of all-day events
if ($event['allday'] && isset($event['end'])) {
if ($event['start'] == $event['end']) {
$event['end']->modify('+ 1 day');
$event['end']->modify('- 1 minute');
}
}
$start = $event['start'] ? $event['start']->format('c') : null;
$end = $event['end'] ? $event['end']->format('c') : null;
if (!$event['allday']) {
if (isset($event['end'])) {
$estart = $event['start']->format('U');
$eend = $event['end']->format('U');
if ($eend - $estart > $this->rc->config->get('calendar_treat_as_allday', 6) * 3600) {
$view_start = get_input_value('start', RCUBE_INPUT_GPC);
$view_end = get_input_value('end', RCUBE_INPUT_GPC);
$event['allday'] = true;
$event['allDayfake'] = true;
if ($event['start']->format('U') >= $view_start) {
$event['left'] = $event['start']->format($this->rc->config->get('time_format', 'H:i'));
} else {
$event['left'] = '';
}
if ($event['end']->format('U') <= $view_end) {
$event['right'] = $event['end']->format($this->rc->config->get('time_format', 'H:i'));
} else {
$event['right'] = '';
}
}
}
}
$tempClass = $event['temp'] ? 'fc-event-temp ' : '';
// End mod by Rosali
// Begin mod by Rosali (advanced categories colorizing)
if (is_string($event['categories'])) {
$event['categories'] = explode(',', $event['categories']);
foreach ($event['categories'] as $idx => $cat) {
$event['categories'][$idx] = trim($cat);
}
}
$readwrite_color = $this->rc->config->get('calendar_events_default_background_color', $this->defaults['calendar_events_default_background_color']);
$readonly_color = $this->rc->config->get('calendar_readonly_events_default_background_color', $this->defaults['calendar_event_defaults_background_color']);
$mode = $this->rc->config->get('calendar_event_coloring', $this->defaults['calendar_event_coloring']);
$categories = $this->rc->config->get('calendar_categories', array());
$calendars = $this->get_calendars();
$calendar_color = $calendars[$event['calendar']]['color'];
foreach ((array) $event['categories'] as $idx => $category) {
$category_color = $event['readonly'] ? $readonly_color : $readwrite_color;
if (isset($categories[$event['categories'][$idx]])) {
$category_color = $categories[$category];
break;
}
}
switch ($mode) {
case '0':
$backgroundColor = $calendar_color;
$borderColor = $calendar_color;
break;
case '1':
$backgroundColor = $category_color;
$borderColor = $category_color;
break;
case '2':
$backgroundColor = $category_color;
$borderColor = $calendar_color;
break;
case '3':
$backgroundColor = $calendar_color;
$borderColor = $category_color;
break;
}
$mode = $this->rc->config->get('calendar_event_font_color', 0);
if ($mode == 0) {
$c_r = hexdec(substr($backgroundColor, 0, 2));
$c_g = hexdec(substr($backgroundColor, 2, 2));
$c_b = hexdec(substr($backgroundColor, 4, 2));
$brightness = ($c_r * 299 + $c_g * 587 + $c_b * 114) / 1000;
if ($brightness > 130) {
$fontColor = '000000';
} else {
$fontColor = 'FFFFFF';
}
} else {
if ($mode == 1) {
$fontColor = substr(dechex(~hexdec($backgroundColor)), -6);
} else {
if ($mode == 2) {
$fontColor = 'FFFFFF';
} else {
$fontColor = '000000';
}
}
}
// End mod by Rosali
return array('_id' => $event['calendar'] . ':' . $event['id'], 'start' => $start, 'end' => $end, 'changed' => $event['changed'] ? $this->lib->adjust_timezone($event['changed'])->format('c') : null, 'created' => $event['created'] ? $this->lib->adjust_timezone($event['created'])->format('c') : null, 'title' => strval($event['title']), 'description' => strval($event['description']), 'location' => strval($event['location']), 'categories' => is_array($event['categories']) ? implode(', ', $event['categories']) : $event['categories'], 'className' => ($addcss ? 'fc-event-cal-' . asciiwords($event['calendar'], true) . ' ' : '') . $tempClass, 'calendarColor' => $calendar_color, 'categoryColor' => $category_color, 'backgroundColor' => '#' . $backgroundColor, 'borderColor' => '#' . $borderColor, 'textColor' => '#' . $fontColor, 'allDay' => $event['allday'] == 1) + $event;
}
<?php
$identifiers = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, 'IR');
echo '<p>' . count($identifiers) . ' identifiers found:</p>';
echo '<ul>';
foreach ($identifiers as $id) {
echo '<li>';
echo $id;
$tz = new DateTimeZone($id);
$comments = $tz->getLocation()['comments'];
if ($comments) {
echo ' : ' . $comments;
}
echo '</li>';
}
echo '</ul>';
/**
* This function returns an array with the most likely latitude and longitud.
* We can get the Lat and Lng from Php's TimeZone object. We can also get it
* from the ipSearch function here which would be more accurate.
*/
public function getLatLng()
{
// do we have an api key for the IP?
if (Phpfox::getParam('core.ip_infodb_api_key') != '') {
$aInfo = $this->ipSearch(Phpfox_Request::instance()->getServer('REMOTE_ADDR'));
// $this->ipSearch($_SERVER['REMOTE_ADDR']);
if (isset($aInfo[Phpfox::getPhrase('admincp.longitude')]) && !empty($aInfo[Phpfox::getPhrase('admincp.longitude')]) && isset($aInfo[Phpfox::getPhrase('admincp.latitude')]) && !empty($aInfo[Phpfox::getPhrase('admincp.latitude')])) {
return array('latitude' => $aInfo[Phpfox::getPhrase('admincp.latitude')], 'longitude' => $aInfo[Phpfox::getPhrase('admincp.longitude')]);
}
}
// has user set a country
if (($sTz = Phpfox::getUserBy('time_zone')) != '' && PHPFOX_USE_DATE_TIME) {
$aTZ = $this->getTimeZones();
if (isset($aTZ[$sTz])) {
$oTz = new DateTimeZone($aTZ[$sTz]);
$aInfo = $oTz->getLocation();
return array('latitude' => $aInfo['latitude'], 'longitude' => $aInfo['longitude']);
}
}
/* return a default value (London GMT0)*/
return array('latitude' => '51.544627', 'longitude' => '-0.184021');
}
/**
* Get location information for a timezone, including country_code, latitude, longitude and comments.
* @param string $timezoneIdentifier
* @return array
*/
public static function getGeolocationFromTimezone($timezoneIdentifier)
{
$tz = new DateTimeZone($timezoneIdentifier);
return $tz->getLocation();
}
<?php
$timeZone = ini_get('date.timezone');
$dtz = new DateTimeZone($timeZone);
echo "Server's Time Zone: " . $timeZone . "<br/>";
foreach ($dtz->getLocation() as $key => $value) {
echo $key . " " . $value . "<br/>";
}
