function formatTimestamp($time, $format="l", $timeoffset="")
{
if(is_callable(array("XoopsLocal", "formatTimestamp"))) {
return XoopsLocal::formatTimestamp($time, $format, $timeoffset);
// Or
// return xoops_local("formatTimestamp", $time, $format, $timeoffset);
}

global $xoopsConfig, $xoopsUser;
$usertimestamp = xoops_getUserTimestamp($time, $timeoffset);
switch (strtolower($format)) {
case 's':
$datestring = _SHORTDATESTRING;
break;
case 'm':
$datestring = _MEDIUMDATESTRING;
break;
case 'mysql':
$datestring = "Y-m-d H:i:s";
break;
case 'rss':
$datestring = "r";
break;
case 'l':
$datestring = _DATESTRING;
break;
default:
if ($format != '') {
$datestring = $format;
} else {
$datestring = _DATESTRING;
}
break;
}
return ucfirst(date($datestring, $usertimestamp));
}