Phpauth\Auth::getUID PHP Method

    public function getUID($email)
    {
        $query = $this->dbh->prepare("SELECT id FROM {$this->config->table_users} WHERE email = ?");
        $query->execute(array($email));
        if (!($row = $query->fetch(\PDO::FETCH_ASSOC))) {
            return false;
        }
        return $row['id'];
    }