/**
* Get a list of intervals for a given period
* @param string $step Interval descriptor as defined in BsDiagram
* @param string $offset Date string
* @param string $limit Date string
* @param string $modLabel Date format item, e.g. "M" for "Jan, Feb"
* @return Interval
*/
public static function getIntervals($step = "W", $offset = '05/01/2007', $limit = '01/31/2009', $modLabel = false)
{
$intervals = array();
$starttime = strtotime($offset);
$endtime = strtotime($limit);
$interval = new Interval();
$interval->setStartTS($starttime);
$old = idate($step, $starttime);
if ($modLabel) {
$interval->setLabel(date($modLabel, $starttime));
} else {
$interval->setLabel($old);
}
$oldts = $starttime;
for ($ts = $starttime; $ts <= $endtime; $ts += 86400) {
$oldts = $ts - 1;
$cur = idate($step, $ts);
if ($old != $cur) {
$interval->setEndTS($oldts);
$intervals[] = $interval;
$interval = new Interval();
$interval->setStartTS($ts);
if ($modLabel) {
$interval->setLabel(date($modLabel, $ts));
} else {
$interval->setLabel($cur);
}
//echo "<br/>-----------------------";
}
$old = $cur;
//echo "<br/>".$oldts." :: ".date("d.m.YHis", $oldts-1);
}
$oldts = $oldts + 86400;
$interval->setEndTS($oldts);
$intervals[] = $interval;
//var_dump($intervals);
return $intervals;
}