My zencart is installed in public_html folder.

Inside public_html folder I created folder /feeds/.

Inside here I created a .php file where I will generate feeds through php.

I need to include application_top.php to be able to use zencart functions.

I tried several combinations but they are not working.

If I print that, I get success:

PHP Code:
if(file_exists("../includes/application_top.php")) { echo 'success'; } else { echo 'fail'; } 
But if I include like this functions I get blank page.

PHP Code:
include('../includes/application_top.php'); 
Where is the problem? I start to think that application_top.php can be included only from catalog root?

THanks