• Create two folders ‘local’ and ‘production’ inside application/config.
• Copy config.php and database.php in both folders recently created.
• In application/config/local/config.php, you can set base url http://localhost/mysite
• Similarly, in application/config/production/config.php, you can set base url http://mysite.com
• Define CI_ENV in index.php. In above screenshot, CI_ENV has been set to local
• Similary, we can define database configuration separately in local and production folder

Thank you and Good luck 🙂