NYCPHP Meetup

[nycphp-talk] gmmktime weirdness

Lance Lovette lance.listserv at optimost.com
Thu Apr 3 11:21:26 EST 2003


Wow. Although not too surprising, those values are way off base. I'm running
Red Hat 7.2. Can anyone produce results from a Red Hat server running PHP
4.3.x? I want to know the current behavior of gmmktime before I submit a new
bug report.

-----Original Message-----
From: Hans Zaunere [mailto:hans at nyu.edu] 
Sent: Wednesday, April 02, 2003 4:28 PM
To: NYPHP Talk
Subject: Re: [nycphp-talk] gmmktime weirdness



Lance Lovette wrote:

>Can someone do me a favor and run this script with the latest release 
>of PHP and tell me what the output is for them?
>
><?php
>$t = gmmktime(2, 0, 0, 4, 6, 2003);
>printf('%d = %s expected 2:00 AM<br>', $t, gmdate('D, d M Y H:i:s T', 
>$t));
>$t = gmmktime(2, 30, 0, 4, 6, 2003); 
>printf('%d = %s expected 2:30 AM<br>', $t, gmdate('D, d M Y H:i:s T', $t));

>$t = gmmktime(3, 0, 0, 4, 6, 2003); 
>printf('%d = %s expected 3:00 AM<br>', $t, gmdate('D, d M Y H:i:s T', $t));
>
>gmmktime(0, 0, 0, 1, 1, 1970); // causes later calls to gmmktime to be 
>wrong
>
>$t = gmmktime(2, 0, 0, 4, 6, 2003);
>printf('%d = %s expected 2:00 AM<br>', $t, gmdate('D, d M Y H:i:s T', 
>$t));
>$t = gmmktime(2, 30, 0, 4, 6, 2003); 
>printf('%d = %s expected 2:30 AM<br>', $t, gmdate('D, d M Y H:i:s T', $t));

>$t = gmmktime(3, 0, 0, 4, 6, 2003); 
>printf('%d = %s expected 3:00 AM<br>', $t, gmdate('D, d M Y H:i:s T', $t));

>?>
>
>I'm running version 4.2.1 and the output makes no sense to me.
>
>1049590800 = Sun, 06 Apr 2003 01:00:00 GMT expected 2:00 AM
>1049592600 = Sun, 06 Apr 2003 01:30:00 GMT expected 2:30 AM 
>1049598000 = Sun, 06 Apr 2003 03:00:00 GMT expected 3:00 AM 
>1049598000 = Sun, 06 Apr 2003 03:00:00 GMT expected 2:00 AM 
>1049599800 = Sun, 06 Apr 2003 03:30:00 GMT expected 2:30 AM 
>1049598000 = Sun, 06 Apr 2003 03:00:00 GMT expected 3:00 AM
>
>First off, calling gmmktime in the middle of the script changes the 
>return value of later gmmktime calls even though they are identical to 
>the first set of calls. Second, I figured gmmktime(2, 0, 0, 4, 6, 2003) 
>would always return 2 AM even though that's when the time "Springs 
>forward" for me.
>
http://hans.newyorkphp.com/gmmktime.tmp.php

Probably not what you wanted to see.  That's on a FreeBSD 4.7 system, 
and there are significant bugs (that I think some of the PHP folks are 
trying to skirt :) in relation to DST, mktime() and BSD.

http://bugs.php.net/bug.php?id=22163

is just one of them.  Search for mktime and gmmktime at bugs.php.net as 
well.

H




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