- var_dump: documentation ( source)
<?php
$tz1 = new DateTimeZone('Europe/Berlin');
$tz2 = new DateTimeZone('Europe/Berlin');
$d = new DateTime('2014-12-24 13:00:00', $tz1);
var_dump($d->getTimezone(), $tz2);
if($tz2 == $d->getTimezone()) {
echo "yes";
}
else {
echo "no";
}