codeigniter 3.0 custom 404 not found error page

Question

My problem is about custom error pages after upgrading to Codeigniter 3.0.

I used to have a Errors controller which handled 404 error page of the websi

Answer 1

You need to set in application/config/routes.php the following route

$route['404_override'] = 'my404';

Then you need to create a new controller in your controllers directory (application/controllers/)

output->set_status_header('404'); 
    $this->load->view('err404');//loading in custom error view
 } 
} 

And create an err404 view. Thats all!

Refer :Reserved Routes