Can PHP do this

[Dave Turner]

Can PHP get the current GMT time and add an hour to it? for example i think
Japan is GMT +8 so would it be possible to write a PHP script to show the
current time in Japan based on that?
Thanks, im new to PHP but it seems like an excellent language compared to
everything else ive tried!

[ZeldorBlat]

Re: Can PHP do this

$myOffset = date("0"); //how many hours off GMT I am (i.e. +0200)

//flip the sign and make it hours (i.e. -2)
$myOffset = -1 * ($myOffset / 100);

//For example, we want to add 5 hours to GMT:
$myOffset += 5;

//If offset is positive, need the plus sign (in the string) for
strtotime()
if($myOffset >= 0)
$myOffset = "+" . $myOffset;

//localtime:
$theTime = time();
//make localtime into GMT + something else:
$theTime = strtotime($myOf fset . " hours", $theTime);

Now $theTime contains a UNIX timestamp of GMT plus some number of hours
(5 in this case).

To make $theTime be a little more readable, check out date():

http://us3.php.net/manual/en/function.date.php

[Dave Turner]

Re: Can PHP do this

excellent!! many thanks kind sir :-)
Reading that manual reference now

[Dave Turner]

Re: Can PHP do this

this one line seems to be working beautifully, do you think its ok to use?

echo gmdate ("h:ia, F j Y", time() + (4 * 3600));

(where the 4 means GMT +4)

[ZeldorBlat]

Re: Can PHP do this

Oops, yeah, you're right. I thought there was something out there
already that did it, but I'm a little hungover and couldn't find it :)

[Daniel Tryba]

Re: Can PHP do this

Dave Turner <nobody@nowhere .nohow> wrote:[color=blue]
> Can PHP get the current GMT time and add an hour to it? for example i think[/color]

See gmdate in the manual
[color=blue]
> Japan is GMT +8 so would it be possible to write a PHP script to show the
> current time in Japan based on that?[/color]

Japan is at +9 at this moment in time (but that can change in the future
(or past)). Don't count on absolute offsets.

It's has been asked before (many times):

$ php4 /tmp/tz.php
GMT : Thu, 07 Apr 2005 19:17:14 +0000
Local: Thu, 07 Apr 2005 21:17:14 +0200
Tokyo: Fri, 08 Apr 2005 04:17:14 +0900

The source:
<?php
$now=time();
echo "GMT : ".gmdate('r',$n ow)."\n";
echo "Local: ".date('r',$now )."\n";
putenv("TZ=Asia/Tokyo");
echo "Tokyo: ".date('r',$now )."\n";
?>