How to use PEAR::Auth

<mailto:pear-general@lists.php.net> I try to replace my old authentification system by PEAR::Auth. I had a login page (login.php) with a form (login, password ...). I used Session to keep data. After that, on the top of each page I had $admin_row = checkUser(); checkAdminData ($admin_row); This two functions get informations in session and compare it to database. (I simplify and didn't give the code because it's not very useful) Now, I try to follow Auth Example. I change my login page as described in the PEAR manual. I create a login function and use Auth function (like in the manual): $dsn = "mysql://user:password@localhost/database"; $a = new Auth("DB", $dsn, "loginFunction"); $a->start(); if ($a->checkAuth()) { header("location:".INDEX."?page=adminstat"); } But I didn't find in the manual what's the equivalent of my two functions in the header of my others page that needs authentification. I suppose I don't have to recreate a Auth object, so, how does it works ? (it's quite difficult to find example on google).