CI3 How to use controller inheritance

These two days to see the next CI3, want to use controller inheritance, later found CI inheritance is another mystery, here to make a note.

1. Check the application\config\config.php file

$config [' subclass_prefix '] = ' my_ ';

Value is My_, then your controller needs to start with this.

2. Create a new my_controller.php file under the Application\core folder

<?phpdefined (' BasePath ') or exit (' No Direct script access allowed ');/***my_controller**/class My_controller extends Ci_controller{public function __construct () {parent::__construct ();}}? >

3. Use it in your controllers

<?phpdefined (' BasePath ') or exit (' No Direct script access allowed '); class User extends my_controller{public functio    n __construct () {parent::__construct (); $this->load->library (' theme '); }}?>

CI3 How to use controller inheritance