My script only works in administrator folder, why?

[sidaphextwin]

Hi, I have a problem
I have a php file that checks for an administrator logged into the back office of prestashop:

include_once ('../ config / config.inc.php ');
include_once ('../ config / settings.inc.php ');
include_once ('../ classes / cookie.php ');

$ cookie = new Cookie ("psadmin ');

/ * logged or not * /
if ($ cookie-> isLoggedBack ())
{
echo "1 ";
}
else
{
echo "0";
}

The point is that this code only works if test.php is in the folder / administrator if you are in / test / test.php does not work. Does anyone have any idea?