    function columnUpdate($table, $col, $val, $where=1) {         
        $res = @mysqli_query($this->connection, "UPDATE `" . $this->prefix . "$table` SET `$col`='" . $val . "' WHERE $where");
        /*if ($res == null)
            return array();
        $objects = array();
        for ($i = 0; $i < mysqli_num_rows($res); $i++)
            $objects[] = mysqli_fetch_object($res);*/
        //return $objects;
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.