php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #48977 US/Central != Etc/GMT-6
Submitted: 2009-07-19 19:40 UTC Modified: 2009-07-19 21:35 UTC
From: cpriest at warpmail dot net Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.3.0 OS: Vista 64-Bit
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: cpriest at warpmail dot net
New email:
PHP Version: OS:

 

 [2009-07-19 19:40 UTC] cpriest at warpmail dot net 
Description:
------------
When initializing two new DateTime objects using equivalent DateTimeZone()'s of US/Central and Etc/GMT-6, the result is incorrect

Reproduce code:
---------------
$objTime = new DateTime('now', new DateTimeZone('US/Central'));
echo $objTime->format('m/d/Y H:i:s T')."\r\n";
$objTime = new DateTime('now', new DateTimeZone('Etc/GMT-6'));
echo $objTime->format('m/d/Y H:i:s T')."\r\n";


Expected result:
----------------
The same timestamp on two lines (with different TimeZone specifiers)

Actual result:
--------------
Different timestamps.

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2009-07-19 21:35 UTC] derick@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

This is not a bug. First of all, *both* of those timezones are only there for backwards compatibility (see the big warning at http://uk.php.net/manual/en/timezones.others.php). Secondly, the timezone database\'s version of Etc/GMT[+-][0-9]+ work the other way around where + means - and thirdly US/Central is currently on GMT-5 hence the 11 hour difference between the output:

07/19/2009 16:32:58 CDT
07/20/2009 03:32:58 GMT-6
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Wed Jul 02 07:01:33 2025 UTC