Autoloading common system resources

We also are autoloading various resources such as support for database access and session management. We need to specify that we're using these resources.

Open the autoload.php file from /path/to/codeigniter/application/config/ in your text editor and find the following line:

$autoload['libraries'] = array();

Replace this line with the following:

$autoload['libraries'] = array('database', 'session');

This will ensure that the resources that are required in order to access the database and to manage sessions are always with us.