#40444 [Bgs->Opn]: Incorrect GMT timestamp
ID: 40444
User updated by: andreas dot braun at netcologne dot de
Reported By: andreas dot braun at netcologne dot de
-Status: Bogus
+Status: Open
Bug Type: Date/time related
Operating System: Win XP Pro / Suse 9.1
PHP Version: 5.2.1
New Comment:
This function is only available for PHP 5.1.0 and higher - So, its no
solution for 4.x! And this is no explanation why the value of
"minuteswest" is correct with "-60", because Germany lies 60 minutes in
the east of Greenwich.
But the result of gmmktime() is wrong. Looks more like an internal
fault of using signs.
Previous Comments:
------------------------------------------------------------------------
[2007-02-12 10:17:14] tony2001@php.net
Set correct timezone using date.timezone.
More details:
http://www.php.net/manual/en/function.date-default-timezone-set.php
------------------------------------------------------------------------
[2007-02-12 10:03:31] andreas dot braun at netcologne dot de
Description:
------------
REFERS TO THE FOLLOWING PHP VERSIONS:
Windows: 4.3.8 Linux: 4.3.8
4.4.4
5.0.0
5.1.6
5.2.1
1. My Wndows PC uses as local time CET (GMT+01:00 Amsterdam, Berlin,
Bern Rome ....) for Germany and my Linux PC uses CET too.
So if we have 09:11:08(CET) GMT is 08:11:08. But gmmktime() returns
under PHP 4.3.8, 4.4.4 and 5.0.0 a timestamp for 10:11:08. That's
wrong!
With 5.1.6 and 5.2.1 gmmktime() returns the same value as mktime() and
dsttime is now 1 instead of 0.
That's wrong, too!
Reproduce code:
---------------
<?php
echo time();
echo "\n";
$var1 = gmmktime();
echo "GMT:\t $var1";
echo "\n";
$var2 = mktime();
echo "Local:\t $var2";
echo "\n";
$gmdate = date("d.m.Y - H:i:s", $var1);
$localdate = date("d.m.Y - H:i:s", $var2);
echo "GMT-Time: $gmdate\n";
echo "Local-Time: $localdate";
echo "\n";
print_r(gettimeofday());
?>
Actual result:
--------------
***********************************************************
UNDER WIN XP with CET(GMT+01) as local time AND PHP 5.0.0
C:\Inetpub\wwwroot\cacti>php-cgi -v
PHP 5.0.0 (cgi-fcgi) (built: Jul 13 2004 21:39:41)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.0, Copyright (c) 1998-2004 Zend Technologies
C:\Inetpub\wwwroot\cacti>php-cgi date.php
Content-type: text/html
X-Powered-By: PHP/5.0.0
1171234727
GMT: 1171238327 ****** <- THIS IS WRONG!
Local: 1171234727
GMT-Time: 12.02.2007 - 00:58:47
Local-Time: 11.02.2007 - 23:58:47
Array
(
[sec] => 1171234727 ****** <- THIS IS CORRECT!
[usec] => 126785 ****** <- THIS IS CORRECT!
[minuteswest] => -60 ****** <- THIS IS CORRECT!
[dsttime] => 1
)
C:\Inetpub\wwwroot\cacti>
***********************************************************
***********************************************************
UNDER WIN XP with CET(GMT+01) as local time AND PHP 5.2.1
C:\Inetpub\wwwroot\cacti>php -v
PHP 5.2.1 (cli) (built: Feb 7 2007 23:11:26)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies
C:\Inetpub\wwwroot\cacti>php date.php
1171235055
GMT: 1171235055 ****** <- THIS IS WRONG!
Local: 1171235055
GMT-Time: 12.02.2007 - 00:04:15
Local-Time: 12.02.2007 - 00:04:15
Array
(
[sec] => 1171235055 ****** <- THIS IS CORRECT!
[usec] => 524359 ****** <- THIS IS CORRECT!
[minuteswest] => -60 ****** <- THIS IS CORRECT!
[dsttime] => 0
)
C:\Inetpub\wwwroot\cacti>
***********************************************************
***********************************************************
UNDER SUSE 9.1 with CET(GMT+01) as local time AND PHP 4.3.8
dev3:/thishost/unix/cen/cacti/plugins # php date.php
1171267868
GMT: 1171271468 ****** <- THIS IS WRONG!
Local: 1171267868
GMT-Time: 12.02.2007 - 10:11:08
Local-Time: 12.02.2007 - 09:11:08
Array
(
[sec] => 1171267868 ****** <- THIS IS CORRECT!
[usec] => 455367 ****** <- THIS IS CORRECT!
[minuteswest] => -60 ****** <- THIS IS CORRECT!
[dsttime] => 0
)
dev3:/thishost/unix/cen/cacti/plugins # date
Mon Feb 12 09:11:13 CET 2007
***********************************************************
SO, THE RESULT IS WRONG GMT-TIME HAS TO BE 08:11:08 RESPECTIVELY
1171264268
***********************************************************
------------------------------------------------------------------------
--
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