Appearance of user id when downloading to the file

[mikcsu120]

Hi! There's this code which I have
 

function pushfile(&$file) {
    header_remove();
  if (isset($file["type"])) header('Content-Type: '.$file["type"]);
  if (isset($file["name"])) header('Content-Disposition: attachment; filename="'.$file["name"].'"');
  print $file["name"];
  header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
  header("Pragma: ");
  echo $file["content"];
  exit;

$h=fopen($filename,"r");
        $content = fread($h, filesize($filename));
        fclose($h);
        $file["type"] = "application/";  //
        $file["name"] = $real_filename;
        $file["content"] = $content."*".$context['user']['id'];
        pushfile($file);

This ID number was well placed into the downloaded file, but it disappeared after converting it (e.g. from pdf to epub). Is there a good solution for that?

[kicken]

4 hours ago, mikcsu120 said:

$file["content"] = $content."*".$context['user']['id'];

Your adding the ID to the content of the file right there.  If you don't want the ID number in the file, then don't add it.

$file['content']=$content;

 

[mikcsu120]

thanks for the reply.

How to put it in the middle of the content?

Edited November 16, 2021 by mikcsu120

[Psycho]

15 hours ago, mikcsu120 said:

How to put it in the middle of the content?

Probably not what you really want, but it is what you asked for:

$midPt = floor(strlen($content)/2);

$file["content"] =  substr($content, 0, $midPt) . $context['user']['id'] . substr($content, $midPt);