PHP | DatePeriod getEndDate() Function

<?php
 
// Initialising a startDate with time
$StartDate = new DateTime('2019-09-30T00:00:00Z');
 
// Initialising a DateInterval of 2 day
$DateInterval = new DateInterval('P2D');
 
// Initialising a endDate with time
$EndDate = new DateTime('2019-10-02T00:00:00Z');
 
// Initialising a DatePeriod with startDate, DateInterval and
// endDate 
$datePeriod = new DatePeriod( $StartDate, $DateInterval, $EndDate);
     
// Calling the getendDate() function
$endDate = $datePeriod->getEndDate();
 
// Getting the start date
echo $endDate->format(DateTime::ISO8601);
?>

<?php
 
// Initialising a startDate with time
$StartDate = new DateTime('2019-09-30T00:00:00Z');
 
// Initialising a DateInterval of 2 day
$DateInterval = new DateInterval('P2D');
 
// Initialising a DatePeriod with startDate, DateInterval
// and without endDate
$datePeriod = new DatePeriod( $StartDate, $DateInterval, 7);
 
// Getting the start date
var_dump($datePeriod->getEndDate());
?>