- var_dump: documentation ( source)
<?php
$tz = new \DateTimeZone('Europe/Berlin');
$d1 = new \DateTime();
$d2 = new \DateTime($d1->format(\DateTime::ATOM), $tz);
$d3 = new \DateTime($d1->format('Y-m-d H:i'), $tz);
var_dump($d1);
var_dump($d2);
var_dump($d3);