Скачать или смотреть CI-Chapter 3- Settings of CodeIgniter

After setting up the site, the next thing that we should do is to configure the site. The application/config folder contains a group of files that set basic configuration of your site.

Configuring Base URL
If this is not set, then CodeIgniter will try to guess the protocol, domain and path to your installation.



However, you should always configure this explicitly and never rely on auto-guessing, especially in production environments.


You can configure the base URL in the $config array with key "base_url"

Database Configuration
The database of the site can be configured in application/config/database.php file.



we can setup database for different environment.

Autoload Configuration

This file specifies, by default, which systems should be loaded.


In order to keep the framework as light-weight as possible, only the absolute minimal resources are loaded by default.

One should autoload the frequently used system, rather than loading it at local level, repeatedly.


Following are the things you can load automatically -

Libraries.
Helper files.