/**
* Returns unique instance of this DAO.
* @return unique instance of this DAO.
*/
public static function getInstance()
{
if (self::$instance == null) {
self::$instance = new UserDAO();
}
return self::$instance;
}
/**
* Retrieve instance of an UserDAO or create one if it does
* not exist.
*
* @access public
* @static
* @return UserDAO
*/
public static function getInstance()
{
if (!isset(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
