Sumit Sharma wrote:
What I mean is my windows time is set to local time but when I use any date
function in PHP it shows time in GMT on web browser and to change this I
have to use putenv("TZ=asia/calcutta");
1 There is no problem with Windows time its according to IST.
2 Problem start with PHP, which displays GMT time by default.
3 To solve this I was advised to change the OS time which is already
Now I am not aware how the php date functions picking GMT time and from
Basic time is always UTC ( GMT is the same ) and so unless you TELL it
otherwise, PHP displays UTC. That way if you have clients accessing from
different time zones they get a consistent time.
If you want to display a particular time zone for a client, then you
need to know what timezone that client is in, which is where
"TZ=asia/calcutta" sets it globally for your site. Windows does not
provide sufficient data to identify the timezone and so PHP defaults to
it not being set.
http://us2.php.net/manual/en/book.datetime.php covers the date functions
that were added in PHP5.1, and which replace the earlier methods since
they actually handle daylight saving as well, something that TZ and the
earlier browser based time zone information simply ignores ...
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