- var_dump: documentation ( source)
<?php
$date = new DateTime('2005-10-10', new DateTimeZone('PST'));
var_dump($date->format('c'));
//$date = new DateTime('2005-10-10', new DateTimeZone('PT'));
var_dump($date->format('c'));
$date = new DateTime('2005-10-10', new DateTimeZone('PDT'));
var_dump($date->format('c'));
$date = new DateTime('2005-10-10', new DateTimeZone('MT'));
var_dump($date->format('c'));
$date->setTimezone(new DateTimeZone('CET'));
var_dump($date->format('c'));