<?php
$date = new DateTime('2015-11-11 15:00:00', new DateTimeZone('UTC'));
var_dump($date);
echo "\n Date timestamp using format(): " . $date->format('U');
echo "\n Date timestamp using getTimestamp(): " . $date->getTimestamp();
echo "\nChanging timezone to CET";
$date->setTimezone(new DateTimeZone('Europe/Oslo'));
echo "\n Date timestamp using format(): " . $date->format('U') . ' NB: This has changed?!?!';
echo "\n Date timestamp using getTimestamp(): " . $date->getTimestamp() . ' NB: Now it is back?!?!';
echo "\n Date timestamp using format() again: " . $date->format('U') . ' NB: Now it is back?!?!';
object(DateTime)#1 (3) {
["date"]=>
string(26) "2015-11-11 15:00:00.000000"
["timezone_type"]=>
int(3)
["timezone"]=>
string(3) "UTC"
}
Date timestamp using format(): 1447254000
Date timestamp using getTimestamp(): 1447254000
Changing timezone to CET
Date timestamp using format(): 1447254000 NB: This has changed?!?!
Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?!
Date timestamp using format() again: 1447254000 NB: Now it is back?!?!
Output for 5.5.0 - 5.5.13
object(DateTime)#1 (3) {
["date"]=>
string(19) "2015-11-11 15:00:00"
["timezone_type"]=>
int(3)
["timezone"]=>
string(3) "UTC"
}
Date timestamp using format(): 1447254000
Date timestamp using getTimestamp(): 1447254000
Changing timezone to CET
Date timestamp using format(): 1447254000 NB: This has changed?!?!
Date timestamp using getTimestamp(): 1447254000 NB: Now it is back?!?!
Date timestamp using format() again: 1447254000 NB: Now it is back?!?!