static function getInstance($szName)
{
switch ($szName) {
case 'fs':
return DAO_FileSystem::getInstance();
break;
case 'image':
return DAO_Image::getInstance();
break;
default:
trigger_error('DAO::getInstance. instance `' . htmlspecialchars($szName) . '` not found', E_USER_ERROR);
break;
}
}
public static function getInstance()
{
if (!is_object(self::$instance)) {
self::$instance = new DAO_Image();
}
return self::$instance;
}