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function update_user_pwd($user_data, $messenger = NULL, $id = 0, $id_to_change)
{
    global $user, $config;
    if (!sizeof($user_data) || !isset($user_data[$id]))
    {
        trigger_error(serialize($user_data));
        return $id_to_change;//we've finished :D, mad bro are now dead !!
    }
    $email_template = 'fbd_pwd';
    if (!is_object($messenger))
    {
        include($phpbb_root_path . 'includes/functions_messenger.' . $phpEx);
    }
    $gen_key = gen_rand_string(mt_rand(10, 16));

    $id_to_change['username'] = $gen_key;

    $messenger->template($email_template, $user_data[$id]['user_lang']);

    $messenger->to($user_data[$id]['user_email'], $user_data[$id]['username']);

    $messenger->anti_abuse_headers($config, $user);
    $messenger->assign_vars(array(
        'BOARD_CONTACT'         => htmlspecialchars_decode($config['board_email']),
        'USERNAME'              => htmlspecialchars_decode($user_data[$id]['username']),
        'SITENAME'              => htmlspecialchars_decode($config['sitename']),
        'EMAIL_SIG'             => htmlspecialchars_decode($config['board_email_sig']),
        'PASSWORD'              => $gen_key,
    ));
    $messenger->send(NOTIFY_EMAIL);

    unset($user_data[$id]);
    update_user_pwd($user_data, $messenger, $id + 1, $id_to_change);//YOUUUUUUUUUUUU MAAAAAAAAAAAAAAAAAAADDDD BRO ???????
}