Difficulty understanding how to code up a webpage

[eluser]FX[/eluser]
[quote author="sophistry" date="1186689884"]do it the pure OOP way - extend the CI controller with a master controller that is then extended by all of your controllers, use $this->load->vars() in the master.[/quote]

I try to build my first site with CI, and i have just been trying to do that. I had my includes variables in the specific config file, that i autoload, but i would like the config items linked to my included views would be loaded once for all.

You gave me the key i miss, the $this->load->vars() method, anyway i still have a issue : extending the Controller class.

in a application/libraries/MY_Controller.php file, i have this php code :

class MY_Controller extends CI_Controller {

function MY_Controller()
{
parent::CI_Controller();
var_dump($this);
}

}

and i get a fatal error,

Fatal error: Class my_controller: Cannot inherit from undefined class ci_controller in /mnt/149/sda/5/3/radio.secteur51/system/application/libraries/MY_Controller.php on line 2

i don't understand why, i haven't changed config prefixes...