public static function checkUserPortIsAvailable($port = 0, $uid)
{
if ($port != 0) {
$stn = DB::sql("SELECT * FROM member WHERE port=? AND uid<>?");
$stn->bindValue(1, $port, DB::PARAM_INT);
$stn->bindValue(2, $uid, DB::PARAM_INT);
$stn->execute();
return $stn->fetchObject(__CLASS__);
}
return null;
}