File Downloading Problem

[eluser]penta997[/eluser]
Hi. I want to download a pdf file with I've generated. But this is not work.

Code:

function index()
  {
      echo anchor('test/get_pdf','download');
  }
  function get_pdf()
  {
      $data = file_get_contents("./filename.pdf"); // Read the file’s contents
      $name = 'filename.pdf';
      //
      force_download($name, $data);
   }


   function generate_pdf()
   {
       $this->load->library('mpdf');
       $this->mpdf->WriteHTML('<p>Hallo World</p>');
       $this->mpdf->Output('filename.pdf','F');
   }