- var_dump: documentation ( source)
<?php
$tz = new DateTimeZone('Europe/Brussels');
$date1 = new DateTime('2014-10-26T03:00:00', $tz);
$date2 = new DateTime('2014-10-26T00:00:00', $tz);
$interval = $date2->diff($date1);
$date1->sub($interval);
var_dump($date1 === $date2);