safekat/ci4/app/Controllers/Pdf/PdfController.php

<?php
namespace App\Controllers\Pdf;

use App\Controllers\BaseController;


class PdfController extends BaseController
{
    function __construct()
    {

    }
    public function index()
    {
        return view('pdf_view');
    }
    public function htmlToPDF(){
        $dompdf = new \Dompdf\Dompdf(['isRemoteEnabled' => true]);
        $dompdf->loadHtml(view('pdf_view'));
        $dompdf->setPaper('A4', 'portrait');
        $dompdf->render();
        $dompdf->stream();
    }
}