redirect url helper redirect to localhost

You also don't have to copy the whole config file. Just the values you want to override. CI will still load the default /config/config.php file, and then load /config/ENVIRONMENT/config.php. So you'd only need to change the base_url in /config/ENVIRONMENT/config.php and don't have to have everything else. That's explained in the docs I linked to.

Ah, ok, thanks, i suposed that new config file replace entire the other, just overwrite the variables defined on the new file