Controller Download

public function actionDownloadFiles($id)
        {
                $material = Inbox::model()->findByPk($id);
                $src = "folder/to/".$material->location_file;
                if(@file_exists($src)) {
                        $path_parts = @pathinfo($src);
                        //$mime = $this->__get_mime($path_parts['extension']);
                        header('Content-Description: File Transfer');
                        header('Content-Type: application/octet-stream');
                        //header('Content-Type: '.$mime);
                        header('Content-Disposition: attachment; filename='.basename($src));
                        header('Content-Transfer-Encoding: binary');
                        header('Expires: 0');
                        header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
                        header('Pragma: public');
                        header('Content-Length: ' . filesize($src));
                        ob_clean();
                        flush();
                        readfile($src);
                } else {
                        header("HTTP/1.0 404 Not Found");
                        exit();
                }

        }