Phpauth\Auth::isEmailTaken PHP Метод

    public function isEmailTaken($email)
    {
        $query = $this->dbh->prepare("SELECT count(*) FROM {$this->config->table_users} WHERE email = ?");
        $query->execute(array($email));
        if ($query->fetchColumn() == 0) {
            return false;
        }
        return true;
    }