Opening a image file gives an empty file. A .txt file can be opened.
Opening the image file gives no view available.

what type of file and what is the script you use to pull it up

what type of file and what is the script you use to pull it up

I am trying to open a .jpg file, writing in php.

$file = str_replace(" ", "_", $_GET["filename"]);
$local_file = UPLOAD_FOLDER.$file;
$download_file = $_GET["filename"];

$download_rate = 40;
$_SESSION['ext']= "";
if(file_exists($local_file) && is_file($local_file)){
    header('Cache-control: private');
    header('Content-Type: application/octet-stream');
    header('Content-Length: '.filesize($local_file));
    header('Content-Disposition: attachment; filename="'.$file.'"');

    flush();
    $file = fopen($local_file, "rb");
    while (!feof($file)){
        print fread($file, round($download_rate * 1024));
        flush();
        ob_flush();
        sleep(1);
    }
    fclose($file);
    exit;
}
else{
  die('Error: The file '.$local_file.' does not exist');
}