PHP and time according to GMT

[toplisek]

I like to define time (date) with GMT variable. I try to do it with code like:
PHP Code:

<?PHP $dat = mktime(date("G"), date("i"), date("s"), date("n"), date("j"), date("Y"));
$difference = substr(date("O",$dat),1,2);
$datdif = 60 * 60 * $difference;


if (substr(date("O",$dat),0,1) == '+') {
$dat = $dat - $datdif;
}
else {
$dat = $dat + $datdif;
}

echo date("H:i:s", $dat);//Output
?>
How to define GMT variable to work for all time zones as separate variable?

This works for London time.

[coopster]

Are you aware of the GMT mktime function? gmmktime [php.net]

[toplisek]

I try to set correctly different server time and different local time to user.

$timezone = date_default_timezone_set("Europe/London");//Sets the default time zone for local time NOT server

function myDate( $format, $timestamp, $timezone){
print myDate( 'h:s a', time() );//calling this would output the current local time
echo '<br>'.strftime('%T GMT',gmmktime()).', timestamp='.gmmktime();
//echo 18:52:08 GMT, timestamp=1076457128

}

Is this correct function for time?

[toplisek]

Will this work in correct way?

[g1smd]

Be aware that London time is NOT GMT all year round.

In the UK winter, London time is GMT.

In the UK summer, London time is GMT+1.

[toplisek]

Is there some nice example for time stamp according to timezones?

[Matthew1980]

Hi all,

Try the manual [php.net] for the different settings that you can have [php.net]

Cheers,
MRb