erp/core/CoreApp/config/hooks.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

/*
$hook['post_controller_constructor'] = array(
                                'class'    => 'ApiClass',
                                'function' => 'set_api',
                                'filename' => 'Api.php',
                                'filepath' => 'hooks'
);

$hook['display_override'] = array(
    'class'    => 'CrClass',
    'function' => 'set_foot_cr',
    'filename' => 'Crclass.php',
    'filepath' => 'hooks'
);
*/