How to extend controller in Codeigniter 4?

Question

How can I create my own core controller in codeigniter 4 like codeigniter 3?

Answer 1

When you say "core" controller I understand you to mean a "base" controller which in CI v3 is often named MY_Controller. If that is what you are asking for it's actually much easier in v4 because of namespaces and the autoloader. Also, there is no need for the trickery of using a prefix like MY_.

Here's just how easy it is. The "base" controller...

File: /application/Controllers/Base.php

<?php namespace App\Controllers;

class Base extends \CodeIgniter\Controller
{
    //your code here
}

Then extend the above to create any other controller

File: /application/Controllers/Home.php

<?php namespace App\Controllers;

class Home extends \App\Controllers\Base
{
   // Your code here
}

The Home controller will inherit all the properties and methods you define in Base.