I am using codeignitor in my ecommerce website and using add to cart function, but i can only add four product at a time.
How do i increase a cookie value without using
The problem is probably that you exceeded cookie size limit (CI sessions are stored as cookies).. Most browsers max size is around 4Kb.
$config[‘sess_use_database’] = true in your config.php
Don't forget to create the ci_sessions table (http://www.codeigniter.com/user_guide/libraries/sessions.html)
It works for me and I hope it will work for you too.