Online PHP editor | output for XmYGH

<?php $fromDate = explode("-", '2017-01-28'); $toDate = explode("-", '2017-05-14'); $start = new DateTime('2017-01-28'); $start->modify('first day of this month'); $end = new DateTime('2017-05-14'); $end->modify('first day of next month'); $interval = DateInterval::createFromDateString('1 month'); $period = new DatePeriod($start, $interval, $end); foreach ($period as $dt) { $date = $dt->format("Y-m"); $firstDate = $date."-15"; $secondDate = $date."-28"; if((strtotime('2017-05-14') >= strtotime($firstDate)) && (strtotime('2017-01-28') <= strtotime($firstDate))) $res[] = $firstDate; if((strtotime('2017-05-14') >= strtotime($secondDate)) && (strtotime('2017-01-28') <= strtotime($secondDate))) $res[] = $secondDate; } print_r($res);