help in unique download link code

hello

i have a peoblem , i am trying to make a unique download link for my website visitors, but i have a problem that when I click the download link it show a strange characters page instead of showing the download box.

i tried to download a jpg image file and didn't work, I am new in php coding and need your help what I missed here.

here is the code

ob_start();
   $mm_type="application/force-download";
   $file = "images/1.jpg";
   $filename = "image1.jpg";
   
   header('Cache-Control: public, must-revalidate');
   header("Pragma: hack");
   header("Content-Description: File Transfer");
   header("Content-Type: " . $mm_type);
   header("Content-Length: " .(string)(filesize($file)) );
   header('Content-Disposition: attachment; filename="'.$filename.'"');
   header("Content-Transfer-Encoding: binary\n");

   ob_end_clean();
   readfile($file);

PHP:

the real file is the $file i.e "images/1.jpg"

and the other one "image1.jpg" is what the visitor's file will actually be called when he/she saves it.

thaks for any help.

 

Somethink like that :

<?PHP
ob_start();
function readfile($file){
   $mm_type="application/force-download";
   $filename = "image1.jpg";
   header('Cache-Control: public, must-revalidate');
   header("Pragma: hack");
   header("Content-Description: File Transfer");
   header("Content-Type: " . $mm_type);
   header("Content-Length: " .(string)(filesize($file)) );
   header('Content-Disposition: attachment; filename="'.$filename.'"');
   header("Content-Transfer-Encoding: binary\n");
}

   ob_end_clean();
$file = "images/1.jpg";
   readfile($file);
?>

PHP: