Translating my current timestamp to GMT time

[marknt]

Ok, I this is my code that Translates server time into client localized time based on client's chosen offset. And it works.
[code]
<?php
define('TIMENOW',time());
function translate_time($_offset,$_time = TIMENOW)
{
$_offset_secs = $_offset * 3600;
return $_offset_secs + $_time;
}

$model_timeoffset = -3;
$clients_time = $admin->translate_time($model_timeoffset,TIMENOW);
$servers_time = date("F d, Y l g:i A");
$gmt_time = ?
?>
[/code]

How can I convert the client's time to the current GMT time? Thanks

Cheers
[img]http://i91.photobucket.com/albums/k310/marknt/36_1_211.gif[/img]

[marknt]

Help anyone phluezzz  :'(