[PLUG] PHP timestamp difference on Linux and Windows systems

[शंतनू]

On 19-Mar-2011, at 11:04 AM, Navin Kabra wrote:

> 19800 seconds = 5 hours and 30 minutes.
> sounds like a timezone issue. (UTC vs IST)
> 
> On Fri, Mar 18, 2011 at 10:40 PM, <pankaj at glug4muz.org> wrote:
> 
>> Hi,
>> When I am executing a php code like below:
>> 
>> <?php
>> $timestamp=mktime(0,0,0,3,1,2011);
>> echo $timestamp;
>> ?>
>> 
>> on Linux and Windows system then there is always a difference of 19800 in
>> output. The result shown on Linux system is always 19800 less than the
>> value displayed on Windows system. But theoretically output on both
>> systems should be same because the number of seconds elapsed since
>> 01/01/1970 to 03/01/2011 should always be same on both operating systems.
>> Can any one please explain the reason behind this difference.

You may like to go through —
http://www.linuxsa.org.au/tips/time.html

Hardware Clock ≠ System Clock — probable problem area.
HTH.

-- 
shantanoo