/**
* Calculates the required DST change and returns a Timestamp Array
*
* @package core
* @category time
* @uses HOURSECS
* @uses MINSECS
* @param int|string $year Int or String Year to focus on
* @param object $timezone Instatiated Timezone object
* @return array|null Array dst => xx, 0 => xx, std => yy, 1 => yy or null
*/
function dst_changes_for_year($year, $timezone) {
if ($timezone->dst_startday == 0 && $timezone->dst_weekday == 0 &&
$timezone->std_startday == 0 && $timezone->std_weekday == 0) {
return null;
}
$monthdaydst = find_day_in_month($timezone->dst_startday, $timezone->dst_weekday, $timezone->dst_month, $year);
$monthdaystd = find_day_in_month($timezone->std_startday, $timezone->std_weekday, $timezone->std_month, $year);
list($dsthour, $dstmin) = explode(':', $timezone->dst_time);
list($stdhour, $stdmin) = explode(':', $timezone->std_time);
$timedst = make_timestamp($year, $timezone->dst_month, $monthdaydst, 0, 0, 0, 99, false);
$timestd = make_timestamp($year, $timezone->std_month, $monthdaystd, 0, 0, 0, 99, false);
// Instead of putting hour and minute in make_timestamp(), we add them afterwards.
// This has the advantage of being able to have negative values for hour, i.e. for timezones
// where GMT time would be in the PREVIOUS day than the local one on which DST changes.
$timedst += $dsthour * HOURSECS + $dstmin * MINSECS;
$timestd += $stdhour * HOURSECS + $stdmin * MINSECS;
return array('dst' => $timedst, 0 => $timedst, 'std' => $timestd, 1 => $timestd);
}
case 'weeknext':
$startweekday = get_user_preferences('calendar_startwday', CALENDAR_STARTING_WEEKDAY);
$startmonthday = find_day_in_month($now['mday'] + 1, $startweekday, $now['mon'], $now['year']);
$startmonth = $now['mon'];
$startyear = $now['year'];
if ($startmonthday > calendar_days_in_month($startmonth, $startyear)) {
list($startmonth, $startyear) = calendar_add_month($startmonth, $startyear);
$startmonthday = find_day_in_month(1, $startweekday, $startmonth, $startyear);
}
$timestart = make_timestamp($startyear, $startmonth, $startmonthday);
$endmonthday = $startmonthday + 7;
$endmonth = $startmonth;
$endyear = $startyear;
if ($endmonthday > calendar_days_in_month($endmonth, $endyear)) {
list($endmonth, $endyear) = calendar_add_month($endmonth, $endyear);
$endmonthday = find_day_in_month(1, $startweekday, $endmonth, $endyear);
}
$timeend = make_timestamp($endyear, $endmonth, $endmonthday) - 1;
break;
case 'monthnow':
$timestart = make_timestamp($now['year'], $now['mon'], 1);
$timeend = make_timestamp($now['year'], $now['mon'], calendar_days_in_month($now['mon'], $now['year']), 23, 59, 59);
break;
case 'monthnext':
list($nextmonth, $nextyear) = calendar_add_month($now['mon'], $now['year']);
$timestart = make_timestamp($nextyear, $nextmonth, 1);
$timeend = make_timestamp($nextyear, $nextmonth, calendar_days_in_month($nextmonth, $nextyear), 23, 59, 59);
break;
case 'recentupcoming':
//Events in the last 5 or next 60 days
$timestart = time() - 432000;
