bueno para empezar hize esto
session_name("proceso");
session_start();
session_register("login");
session_register("codigo");
Claro es lo primero q va luego de <?php
y bueno cuando lo corro me da esto:
Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0
Q debo corregir?