how set CI_ENV for codeigniter

If you are in control of the webserver it is better to use server config files than to use .htaccess. In truth, there really isn't a reason to use .htaccess at all because all directive will be supplied much more efficiently from config files.

.htaccess hits tend to add up because each time the server read a directory it must open and evaluate the .htaccess file if it is there. Config files, on the other hand, are read once when the web server starts up and the directives are kept in memory.

.htaccess exists to allow purchasers of space on a shared server at least at tiny be of control. But it's performance sucking sponge.

Thank you so much