for($x = 0; $x <= $count_all_users; $x++) {
            $query = $this->_db->query("SELECT id FROM users WHERE sex = ? LIMIT $x, 1", array($sex));
            $users = $query->results();

            $user = array();
            $user[] = $users[0]->id;


$query = $this->_db->query("SELECT id FROM users WHERE sex = ?", array($sex));
        $users = $query->results();

        $count = count((array)$users);
        $possibleUsers = array();

        for ($x = 0; $x < $count; $x++) {
            $possibleUsers[] = $users[$x]->id;
        }