Codeigniter 3 dev Unable to load the requested class

Question

I'm new in CI and now I'm trying to use CodeIgniter 3 to develop my site. I just only extract the framework and change only one think in config/autoload.php file:

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

when I run the site, an error occur:

Unable to load the requested class: Input

When I tried it with CI version 2.2.0 stable, every thing is OK, no errors Could some one explain why and help me to solve it?

Answer 1

As of documentation input library is loaded by default.

This class (input) is initialized automatically by the system so there is no need to do it manually.

Autoloading documentation http://www.codeigniter.com/userguide3/general/autoloader.html

Answer 2

By default the library load from system/core folder in you CI. But the Input library is located on the core folder so you need to give relative path to the Input.php like this

$autoload['libraries'] = array('database','../core/input');