how to create login and registration in codeigniter 4 code example

Example 1: codeigniter 4 login example

<?php
 
if ( ! function_exists('render'))
{
    function render(string $name, array $data = [], array $options = [])
    {
        return view(
            'layout',
            [
                'content' => view($name, $data, $options),
            ],
            $options
        );
    }
}

Example 2: codeigniter 4 login example

<?php namespace App\Controllers;
 
use CodeIgniter\Controller;
 
class Home extends Controller
{
    public function index()
    {
        return view('welcome_message');  
    }
}

Example 3: codeigniter 4 login example

<?php namespace Config;
 
use CodeIgniter\Events\Events;
 
Events::on('post_controller_constructor', function() {
    helper('render');
});