What is the better solution for check if is logged in

What is the better solution for check if is logged in ?

app/Controllers/Back/DashbardController.php

PHP Code:

<?php namespace App\Controllers\Back;
use App\Controllers\Back\BackController;

class DashbardController extends BackController {
    
    public function list() {
        
        echo "You can see this content just if you are logged";
        
    }
    
} 


app/Controllers/Back/BackController.php ( Method 1 )

PHP Code:

<?php namespace App\Controllers\Back;
use App\Controllers\BaseController;

class BackController extends BaseController {
    
    public function initController(\CodeIgniter\HTTP\RequestInterface $request, \CodeIgniter\HTTP\ResponseInterface $response, \Psr\Log\LoggerInterface $logger) {
        
        parent::initController($request, $response, $logger);
        
        if ( !service('authLibrary')->isLoggedIn() ) {
            
            header("HTTP/1.1 301 Moved Permanently"); 
            header('Location: ' . base_url('login'));
            exit;
            
        }
        
    }
    
} 


app/Libraries/AuthLibrary.php

PHP Code:

<?php namespace App\Libraries;

class AuthLibrary {

    public function isLoggedIn() {
        
        return FALSE;
        
    }
    
} 


app/Config/Services.php

PHP Code:

<?php namespace Config;
use CodeIgniter\Config\Services as CoreServices;
require_once SYSTEMPATH . 'Config/Services.php';

class Services extends CoreServices {
    
    public static function authLibrary($getShared=false){
        if($getShared){
            return self::getSharedInstance('authLibrary');
        }  return new \App\Libraries\AuthLibrary();
    }

} 


app/Filters/LoginFilter.php

PHP Code:

<?php namespace App\Filters;
use CodeIgniter\Filters\FilterInterface;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;

class LoginFilter implements FilterInterface {
    
   public function before(RequestInterface $request) {
       
        $authLibrary = service('authLibrary');

        if ( !$authLibrary->isLoggedIn() ) {
          
            header("HTTP/1.1 301 Moved Permanently"); 
            header('Location: ' . base_url('login'));
            exit; 
          
        }
       
   }
   
   public function after(RequestInterface $request, ResponseInterface $response) {
       
   }  
   
} 


app/Config/Filters.php ( Method 2 )

PHP Code:

<?php namespace Config;

use CodeIgniter\Config\BaseConfig;

class Filters extends BaseConfig {
    
    public $aliases = [
        'csrf'     => \CodeIgniter\Filters\CSRF::class,
        'toolbar'  => \CodeIgniter\Filters\DebugToolbar::class,
        'honeypot' => \CodeIgniter\Filters\Honeypot::class,
        'loginFilter' => \App\Filters\LoginFilter::class,
    ];

    public $globals = [
        'before' => [
            //'honeypot'
            //'csrf',
            //'loginFilter',
        ],
        'after'  => [
            'toolbar',
            //'honeypot'
        ],
    ];

    public $methods = [];

    public $filters = [
        'loginFilter' => ['before' => ['back/*']]
    ];
    
} 


I'm a fan of filters for authentication (and really any route "filtering"). Note that you can return a RedirectResponse from Filter::before() to let the framework handle the redirect for you - much easier to testing and clean up and logging then using `header()` + `exit()`