PHPFusion\Authenticate::setLastVisitCookie PHP Method

    public static function setLastVisitCookie()
    {
        global $userdata;
        $guest_lastvisit = time() - 3600;
        $update_threads = FALSE;
        $set_cookie = TRUE;
        $cookie_exists = isset($_COOKIE[COOKIE_LASTVISIT]) && isnum($_COOKIE[COOKIE_LASTVISIT]) ? TRUE : FALSE;
        if (iMEMBER) {
            if ($cookie_exists) {
                if ($_COOKIE[COOKIE_LASTVISIT] > $userdata['user_lastvisit']) {
                    $update_threads = TRUE;
                    $lastvisit = $userdata['user_lastvisit'];
                } else {
                    $set_cookie = FALSE;
                    $lastvisit = $_COOKIE[COOKIE_LASTVISIT];
                }
            } else {
                $update_threads = TRUE;
                $lastvisit = $userdata['user_lastvisit'];
            }
            if ($update_threads) {
                dbquery("UPDATE " . DB_USERS . " SET user_threads='' WHERE user_id='" . $userdata['user_id'] . "'");
            }
        } else {
            if ($cookie_exists) {
                if ($_COOKIE[COOKIE_LASTVISIT] > $guest_lastvisit) {
                    $lastvisit = $guest_lastvisit;
                } else {
                    $set_cookie = FALSE;
                    $lastvisit = $_COOKIE[COOKIE_LASTVISIT];
                }
            } else {
                $lastvisit = $guest_lastvisit;
            }
        }
        if ($set_cookie) {
            Authenticate::_setCookie(COOKIE_LASTVISIT, $lastvisit, time() + 3600, COOKIE_PATH, COOKIE_DOMAIN, FALSE, TRUE);
        }
        return $lastvisit;
    }

    //@todo: to remove this part for non-global approach
    define("iAUTH", substr(md5($userdata['user_password'] . USER_IP), 16, 16));
    $aidlink = fusion_get_aidlink();
    // Generate a session aid every turn
    $token_time = time();
    $algo = fusion_get_settings('password_algorithm');
    $key = $userdata['user_id'] . $token_time . iAUTH . SECRET_KEY;
    $salt = md5($userdata['user_admin_salt'] . SECRET_KEY_SALT);
    $_SESSION['aid'] = $userdata['user_id'] . "." . $token_time . "." . hash_hmac($algo, $key, $salt);
}
// PHP-Fusion user cookie functions
if (!isset($_COOKIE[COOKIE_PREFIX . 'visited'])) {
    $result = dbquery("UPDATE " . DB_SETTINGS . " SET settings_value=settings_value+1 WHERE settings_name='counter'");
    setcookie(COOKIE_PREFIX . "visited", "yes", time() + 31536000, "/", "", "0");
}
$lastvisited = Authenticate::setLastVisitCookie();
// Check file types of the uploaded file with known mime types list to prevent uploading unwanted files if enabled
if ($settings['mime_check'] == "1") {
    if (isset($_FILES) && count($_FILES)) {
        require_once INCLUDES . "mimetypes_include.php";
        $mime_types = mimeTypes();
        foreach ($_FILES as $each) {
            if (isset($each['name']) && strlen($each['tmp_name'])) {
                $file_info = pathinfo($each['name']);
                $extension = $file_info['extension'];
                if (array_key_exists($extension, $mime_types)) {
                    if (is_array($mime_types[$extension])) {
                        $valid_mimetype = FALSE;
                        foreach ($mime_types[$extension] as $each_mimetype) {
                            if ($each_mimetype == $each['type']) {
                                $valid_mimetype = TRUE;