public function __construct($cal, $siteId = null)
{
if (!isset($cal) || !is_array($cal) && !is_string($cal)) {
return;
}
$this->component = new CDavICalendarComponent();
if (is_string($cal)) {
$this->component->InitializeFromString($cal);
} else {
$this->component->SetType('VCALENDAR');
$this->component->SetProperties(array(new CDavICalendarProperty('VERSION:2.0'), new CDavICalendarProperty('PRODID:-//davical.org//NONSGML AWL Calendar//EN'), new CDavICalendarProperty('METHOD:PUBLISH')));
$arComps = array();
$tz = CDavICalendarTimeZone::GetTimezone(CDavICalendarTimeZone::getTimeZoneId());
if (!empty($tz)) {
$comptz = new CDavICalendarComponent();
$comptz->InitializeFromString($tz);
$arComps[] = $comptz;
}
$comp = new CDavICalendarComponent();
$comp->InitializeFromArray($cal);
$arComps[] = $comp;
$this->component->SetComponents($arComps);
}
}
public static function getTimezoneByOffset($date, $offset)
{
foreach (self::$arTimeZones as $timeZoneCode => $timeZoneText) {
$t = new CDavICalendarComponent();
$t->InitializeFromString($timeZoneText);
if ($t) {
$arTimeMap = array();
$comps = $t->GetComponents();
foreach ($comps as $comp) {
$t = self::ParseVTimezone($comp, intval(date("Y", $date)));
if ($t !== false) {
$arTimeMap[] = $t;
}
}
if ($arTimeMap) {
usort($arTimeMap, function ($a, $b) {
return $a['time'] > $b['time'] ? 1 : ($a['time'] < $b['time'] ? -1 : 0);
});
if ($date < $arTimeMap[0]['time'] && $arTimeMap[0]['from'] == $offset) {
return $timeZoneCode;
}
for ($i = 0, $n = count($arTimeMap); $i < $n - 1; $i++) {
if ($date >= $arTimeMap[$i]['time'] && $date < $arTimeMap[$i + 1]['time'] && $arTimeMap[$i]['to'] == $offset) {
return $timeZoneCode;
}
}
if ($date >= $arTimeMap[$n - 1]['time'] && $arTimeMap[$n - 1]['to'] == $offset) {
return $timeZoneCode;
}
}
}
}
return false;
}
