PHP Manual: Gets the interval

Object-oriented style

public DateInterval DatePeriod::getDateInterval()

Gets a DateInterval object representing the interval used for the period.

This function has no parameters.

Returns a DateInterval object

Example #1 DatePeriod::getDateInterval example

<?php
$period = new DatePeriod('R7/2016-05-16T00:00:00Z/P1D');
$interval = $period->getDateInterval();
echo $interval->format('%d day');
?>

The above example will output:

1 day

DatePeriod::getDateInterval