php DatePeriod does not return 2 days as expected

Question

I try to get all days within a period of time. It does not matter if it is a full day or only some hours. My current code using DatePeriod does not work for me.

Example:

[start] => DateTime Object
    (
        [date] => 2014-01-27 22:40:40
        [timezone_type] => 1
        [timezone] => +00:00
    )

[end] => DateTime Object
    (
        [date] => 2014-01-28 17:40:40
        [timezone_type] => 1
        [timezone] => +00:00
    )

$interval = new DateInterval('P1D'); // 1Day Interval
$daterange = new DatePeriod($time['start'], $interval ,$time['end']);

$return['days'] = array();

foreach($daterange as $date){
    $return['days'][] = $date->format("Y-m-d");
}

I would like to get

[0] => 2014-01-27
[1] => 2014-01-28

But i only get the

[0] => 2014-01-27

Is it possible to change DatePeriod parameters or something ?

Answer 1

DatePeriod object ignores last period. You can solve that by increasing end date by your interval:

$interval = new DateInterval('P1D');
$start->setTime(0, 0);
$end->setTime(0, 0)->add($interval);
$periods = new DatePeriod($start, $interval, $end);

demo

^{Updated: remove (set to 00:00:00) time parts on start and end dates, if you are only looping via days.}