[curtiss]

To help yourself debug the issue, try echoing some of the values that you're coming up with before actually committing anything to the database. For instance, I would recommend echoing each of your variables as you're working. Something like:

$sql=mysql_query("SELECT userid, victoria, dia, mes, anio, horas, minutos, segundos FROM kw_users WHERE userid = $userid",$con);
while($row = mysql_fetch_array($sql))
  {
    if ($row["victoria"] == "llendo"){
    
    $date = $row["dia"];
    $month = $row["mes"];
    $year = $row["anio"];
    $hours = $row["horas"];
    $minuts = $row["minutos"];
    $seconds = $row["segundos"];

echo "<div>$date<br />$month<br />$year<br />$hours<br />$minuts<br />$seconds</div>";

$futuro = mktime($hours, $minuts, $seconds, $month, $date, $year) - time();

echo "<div>$futuro</div>";

$futuro = time() + $futuro;

echo "<div>$futuro</div>"

$date = date("d",$futuro);
$month = date("m",$futuro);
$year = date("y",$futuro);
$hours = date("H",$futuro);
$minuts =  date("i",$futuro);
$seconds = date("s",$futuro);

echo "<div>$date<br />$month<br />$year<br />$hours<br />$minuts<br />$seconds</div>";
}