/** * Singleton Design Pattern * Return the instance of the class DAO.class.php * @access private * @return DAO class instance * @author Mauro Donadio */ private static function _getInstance() { if (AContent_lcl_importxml::$_singleton == null) { require_once 'ContentDAO.class.php'; AContent_lcl_importxml::$_singleton = new ContentDAO(); } return AContent_lcl_importxml::$_singleton; }