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Bug #43548 date() returns incorrect time by +1 hour
Submitted: 2007-12-09 22:00 UTC Modified: 2007-12-10 10:15 UTC
From: andrew at confirmalert dot com dot au Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 5.2.5 OS: Win 2003 Server SP2
Private report: No CVE-ID: None
View Developer Edit
 [2007-12-09 22:00 UTC] andrew at confirmalert dot com dot au 
Description:
------------
OK. I can reproduce this bug. The previous ticket was closed prematurely and with an incorrect status. So there is no doubt or miscommunication I have re-run the test on the same machine using the two versions of PHP. The results are the still the same as originally reported in bug '42755 date() returns incorrect time by +1 hour'.

Reproduce code:
---------------
======
code - test1.php
======
<?php
echo date("Y-m-d @ g:i", 1190671200);
?>

Expected result:
----------------
======
result using php 5.0.3
======
C:\PHP>php test1.php
2007-09-24 @ 10:00

C:\PHP>php --version
PHP 5.0.3 (cli) (built: Dec 15 2004 08:07:57)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.3, Copyright (c) 1998-2004 Zend Technologies

Actual result:
--------------
======
result using php 5.2.5
======
C:\php-5.2.5>php test1.php
2007-09-24 @ 11:00

C:\php-5.2.5>php --version
PHP 5.2.5 (cli) (built: Nov  8 2007 23:18:51)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies

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 [2007-12-09 22:23 UTC] derick@php.net 
What is wrong with the PHP 5.2.5 output?
 [2007-12-09 23:01 UTC] andrew at confirmalert dot com dot au 
Hi Derick. 

PHP versions up to 5.0.3 were producing a result of '2007-09-24 @ 10:00'. PHP 5.2.5 produces '2007-09-24 @ 11:00' which +1 hour difference. This breaks our online diary system. 

Cheers. 
Andrew
 [2007-12-10 08:16 UTC] derick@php.net 
Please answer my questions:

1. What is the output of:

<?php
echo date_default_timezone_get(), "\n";
?>

2. What is wrong with the PHP 5.2.5 output?
 [2007-12-10 10:05 UTC] andrew at confirmalert dot com dot au 
Answer 1.
=========
The output for PHP 5.2.5 is:
---------
C:\php-5.2.5>php test2.php
Europe/London
---------

Answer 2.
=========
The output for php 5.2.5 of 2007-09-24 @ 11:00 is accurate for Europe/London.

The output for php 5.2.5 is inaccurate for Morroco/Casablanca which is the timezone that the server has been set to i.e. London was observing daylight savings time on the above date. Casablanca was not (2007-09-24 @ 10:00). See the following link for details ...

http://www.timeanddate.com/worldclock/fixedtime.html?month=9&day=24&year=2007&hour=10&min=0&sec=0&p1=0

It appears that php 5.2.5 does not accurately pickup the timezone set by the Windows operating system.
 [2007-12-10 10:15 UTC] derick@php.net 
Exactly, and that is why you need to set it:
http://no2.php.net/manual/en/ref.datetime.php#ini.date.timezone
(Set it to: Africa/Casablanca)

PHP will also warn you about this if you have E_STRICT errors turned on. This is not a bug.
 
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