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[2007-07-06 08:21 UTC] ron@php.net
Description:
------------
date() interprets a Unix timestamp as GMT and converts it to the default timezone. In my opinion it should not convert timezones.
(bug report requested by Derick Rethans).
Reproduce code:
---------------
<?php
date_default_timezone_set('Europe/Amsterdam');
$date = new DateTime('now', new DateTimeZone('GMT'));
echo 'DateTime::format(): '.$date->format('Ymd, H:i:s')."\n";
echo 'date() of unixtime: '.date('Ymd, H:i:s', $date->format('U'))."\n";
?>
Expected result:
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DateTime::format(): 20070706, 07:38:45
date() of unixtime: 20070706, 07:38:45
Actual result:
--------------
DateTime::format(): 20070706, 07:38:45
date() of unixtime: 20070706, 09:38:45
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Last updated: Wed Oct 22 19:00:02 2025 UTC |
I checked this now, and it is not a bug. If you convert to a timestamp there is no more associated timezone possible. The date object keeps this normally - but it's impossible to attach this just to a number. If you add the timezone as output, you will see the difference: <?php date_default_timezone_set('Europe/Amsterdam'); $date = new DateTime('now', new DateTimeZone('GMT')); echo 'DateTime::format(): '.$date->format('Ymd, H:i:s T')."\n"; echo 'date() of unixtime: '.date('Ymd, H:i:s T', $date->format('U'))."\n"; ?> derick@kossu:~$ php bug41912.php DateTime::format(): 20070711, 21:00:26 UTC date() of unixtime: 20070711, 23:00:26 CEST