Help with a function

I have included the class in my index.php an all queries work fine.
Once i click on the link to go to register.php, none of the queries there work.
Do i need to re-include ez_sql.php? And the connection was never closed!
I also have a functions.php (included in register.php), which
contains some functions, that use the $db object, but those functions
do not work!
All i get is this error:

Fatal error: Call to a member function get_results() on a non-object

PLEASE HELP!!

hi there,

just add

global $db;

to your function.

cheers