config.php

<?php

$db_type = 'mysqli';
$db_host = 'localhost';
$db_name = '';
$db_username = '';
$db_password = '';
$db_prefix = '';
$p_connect = false;

$cookie_name = 'punbb_cookie';
$cookie_domain = '';
$cookie_path = '/';
$cookie_secure = 0;
$cookie_seed = '';

$language = 'en';

define('PUN', 1);

//define('PUN_DEBUG', true);
define('PUN_NEW_MEMBER', 5);

include dirname(dirname(__FILE__)) . '/vendor/autoload.php';

function TextpatternForumSfs()
{
    global $db_host, $db_name, $db_username, $db_password, $db_prefix;

    $ip = $_SERVER['REMOTE_ADDR'];
    $since = time() - 3600*24*60;
    $user = $email = '';
    $action = false;

    if (strpos($_SERVER['REQUEST_URI'], 'register.php') !== false && isset($_POST['req_user']) && isset($_POST['req_email1']))
    {
        $user = (string) $_POST['req_user'];
        $email = (string) $_POST['req_email1'];
        $action = 'register';
    }

    if (isset($_POST['form_sent']) && isset($_GET['action']) && $_GET['action'] === 'in' && isset($_POST['req_username']))
    {
        $action = 'login';
        $user = $_POST['req_username'];
    }

    if (!$action)
    {
        return;
    }

    $pdo = new PDO('mysql:dbname='.$db_name.';host='.$db_host, $db_username, $db_password);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // Fetch user details.

    if ($action === 'login')
    {
        $sth = $pdo->prepare("SELECT group_id, email FROM {$db_prefix}users WHERE username = :username");
        $sth->execute(array(':username' => $user));
        $r = $sth->fetch();

        if (!$r || $r['group_id'] != 0)
        {
            return;
        }

        $email = $r['email'];
    }

    // Check if the user is already banned.

    $sth = $pdo->prepare("SELECT ip FROM {$db_prefix}bans WHERE ((ip != '' and ip = :ip) or (email != '' and email = :email)) and IFNULL(expire, :expires) >= :expires limit 1");

    $sth->execute(array(
        ':ip'      => $ip,
        ':email'   => $email,
        ':expires' => time(),
    ));

    if ($sth->rowCount())
    {
        return;
    }

    // Get records from StopForumSpam database.

    $data = file_get_contents('http://www.stopforumspam.com/api?f=json&unix&ip='.urlencode($ip).'&email='.urlencode($email).'&username='.urlencode($user), false, stream_context_create(array('http' => array('timeout' => 15))));

    if (!$data)
    {
        return;
    }

    $data = json_decode($data);

    if (!$data || empty($data->success))
    {
        return;
    }

    // Add new bans to the database.

    if ($ip && isset($data->ip) && $data->ip->appears && $data->ip->lastseen >= $since)
    {
        $pdo->prepare("INSERT INTO {$db_prefix}bans SET ip = :ip, message = :message, expire = :expires")->execute(array(
            ':ip'       => $ip,
            ':message'  => 'IP address found in StopForumSpam database.',
            ':expires'  => strtotime('+2 month'),
        ));

        @unlink(__DIR__ . '/cache/cache_bans.php');
    }

    if ($email && isset($data->email) && $data->email->appears && $data->email->lastseen > $since)
    {
        $pdo->prepare("INSERT INTO {$db_prefix}bans SET email = :email, message = :message")->execute(array(
            ':email'    => $email,
            ':message'  => 'Email address found in StopForumSpam database.',
        ));

        @unlink(__DIR__ . '/cache/cache_bans.php');
    }
}

try
{
    TextpatternForumSfs();
}
catch (Exception $e)
{    
}