/**
* Return instance of first active driver
*
* @return GeoIp_Driver
*/
public static function getInstance() {
if (self::$instance === null) {
$fileDb = new GeoIp_Driver_File();
if ($fileDb->isActive()) {
self::$instance = $fileDb;
return self::$instance;
}
throw new Gpf_Exception('No GeoIp driver available');
}
return self::$instance;
}
