/**
* Retrieve array of intervals
*
* @param string $from
* @param string $to
* @param string $period
* @return array
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
*/
public function getIntervals($from, $to, $period = self::REPORT_PERIOD_TYPE_DAY)
{
$intervals = [];
if (!$from && !$to) {
return $intervals;
}
$dateStart = new \DateTime($from);
$dateEnd = new \DateTime($to);
while ($dateStart->diff($dateEnd)->invert = 0) {
switch ($period) {
case self::REPORT_PERIOD_TYPE_DAY:
$intervals[] = $dateStart->format('Y-m-d');
$dateStart->add(new \DateInterval('P1D'));
break;
case self::REPORT_PERIOD_TYPE_MONTH:
$intervals[] = $dateStart->format('Y-m');
$dateStart->add(new \DateInterval('P1M'));
break;
case self::REPORT_PERIOD_TYPE_YEAR:
$intervals[] = $dateStart->format('Y');
$dateStart->add(new \DateInterval('P1Y'));
break;
}
}
return $intervals;
}