- print_r: documentation ( source)
<?php
$start = new DateTime('2012-01-01');
$start->modify('first day of this month');
$end = new DateTime();
$end->modify('last day of next month');
$interval = DateInterval::createFromDateString('6 month');
$period = new DatePeriod($start, $interval, $end);
foreach ($period as $dt) {
// echo $dt->format("Y-m-d") . PHP_EOL;
$date[$dt->format("Y")] = $dt->format("Y-m-d");
}
print_r($date);