Multile domain pointed to a signle application

I have an application with 3 modules as follows-

• Admin
  
• Provider
  
• Client
  

now I have a requirement that two different domains will hit the same site and the conditions I have to apply on this are given below 
from domain 1 user can access the client module only and from domain 2 user can access only Admin and Provider modules.

is there any way we can segregate and target modules as per domain?

Learning Codeigniter 

I have an application with 3 modules as follows-

• Admin
  
• Provider
  
• Client
  

now I have a requirement that two different domains will hit the same site and the conditions I have to apply on this are given below 
from domain 1 user can access the client module only and from domain 2 user can access only Admin and Provider modules.

is there any way we can segregate and target modules as per domain?

This is what I have done so far and working.

Inside app/Config/Constants.php

PHP Code:

$protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https://' . $_SERVER['HTTP_HOST'] . '/' : 'http://' . $_SERVER['HTTP_HOST'] . '/';
defined('DOMAIN')                  || define('DOMAIN', preg_replace("/^[\w]{2,6}:\/\/([\w\d\.\-]+).*$/", "$1", $protocol)); 


and then created a filter

PHP Code:

    public function before(RequestInterface $request, $arguments = null)
    {
        if (DOMAIN != 'domainName.com')
            throw \CodeIgniter\Exceptions\PageNotFoundException::forPageNotFound();
    } 


after that I have applied it inside routes.php

PHP Code:

$routes->group('client', ['namespace' => 'ClientDashboard\Controllers', 'filter' => 'client-domain'], function ($routes) {
    $routes->get('client/dashboard', 'DashboardController');
}); 


to be honest, I have no idea if this is the convenient way to do this or not, but for now, it's working as I wanted.

Learning Codeigniter 

Validate the $_SERVER['HTTP_HOST'].
Otherwise you'll make vulnerability.

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