mivo/app/Controllers/DhcpController.php

<?php

namespace App\Controllers;

use App\Core\Controller;
use App\Models\Config;
use App\Libraries\RouterOSAPI;
use App\Helpers\HotspotHelper;

class DhcpController extends Controller
{
    public function index($session)
    {
        $configModel = new Config();
        $config = $configModel->getSession($session);
        if (!$config) {
            header('Location: /');
            exit;
        }

        $leases = [];
        $API = new RouterOSAPI();
        $API->attempts = 1; 
        $API->timeout = 3;

        if ($API->connect($config['ip_address'], $config['username'], $config['password'])) {
            // Fetch DHCP Leases
            $leases = $API->comm("/ip/dhcp-server/lease/print");
            $API->disconnect();
        }

        // Add index for viewing
        return $this->view('network/dhcp', [
            'session' => $session,
            'leases' => $leases ?? []
        ]);
    }
}