public static function getInstance($servidor = '172.20.42.95', $usuario = 'root', $clave = 'MNd3s4rr0ll0%', $bd = 'face_suite')
{
if (is_null(self::$_singleton)) {
self::$_singleton = new DataBaseRemota($servidor, $usuario, $clave, $bd);
}
return self::$_singleton;
}