- var_dump: documentation ( source)
- date_default_timezone_get: documentation ( source)
<?php
$d1 = new DateTime('now+02:00');
$d1->setTimezone(new DateTimeZone(date_default_timezone_get()));
$d2 = new DateTime();
$d1 = new DateTime('2015-10-10T10:00:00+0200');
$dtz1 = new DateTimeZone($d1->getTimezone());
var_dump($d1, $dtz1);