codeigniter中的全局控制器？

Question

Is there a way in codeigniter to define a global function that can be called in all controllers easily?

I have a application that will show all latest users who have registered on the app.

what im doing now is, i have autoloaded a model Latest_model with the below function

function new_users()
{
  $this->db->select('*');

  $this->db->from('users');
  $this->db->order_by('id', 'DESC'); 
  $this->db->limit('5');

  $query = $this->db->get();
  return $query->result_array();

}

and on all the controllers, at the beginning i call this model

$data['new'] = $this->Latest_model->new_users();

It works but, i need to repeat this in all the functions.

So what would be the best way to achieve this?

Any help will be appreciated

Answer 1

You can always extend default controller with new functionality. Codeigniter's documentation is the good place to start.

In short you should create your base controller named MY_Controller under application/core/ folder. Then you can place inside this file some code like this:

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

class MY_Controller extends CI_Controller {

    protected $data = [];

    function __construct() {
        parent::__construct();

        $this->data['new'] = $this->Latest_model->new_users();
    }
}

Then from all your controllers you can access the data array with $this->data.