// time format: "yyyy-mm-dd hh:mm:ss"
function createDate($year, $mounth, $day, $hour, $minute) {
    return date("Y-m-d h:i:s", mktime($hour, $minute, 0, $mounth, $day, $year, 1));
}

// gives an array of int.
/* array (     0 -> number of weeks
        1 -> number of days
        2 -> number od days
        3 -> hours
        4 -> minutes)           */
//array mkt2daysHoursMinutes(int $time)
function mkt2daysHoursMinutes($time) {

    $result = array();

    $weeks  = 7*24*60*60;
    $days   = 24*60*60;
    $hours  = 60*60;
    $minutes= 60;
    
    if (($result[0] = intval($time/$weeks)))
      $time %= $weeks;
    if (($result[1] = intval($time/$days)))
      $time %= $days;
    if (($result[2] = intval($time/$hours)))
      $time %= $hours;
    $result[3] = intval($time/$minutes);

return $result;
}