download issues

[alena1347]

Having a download issue need help

1)I used the script written below to download .doc,.docx,.pdf,.octetstream file but when i download a octetstream file it display's file data in browser itself

 

mycode:-

 

if(file_exists('./upload_resume/'.$f))

{

      header('Content-type: application/octet-stream');

header('Content-Disposition: attachment; filename="'.$f.'"');

        echo file_get_contents('./upload_resume/'.basename($f));

 

 

ob_clean();

ob_end_flush();

$read=readfile('./upload_resume/'.basename($f));

 

 

exit;

?>

<script type="text/javascript">

history.back();

</script>

<?php

    } 

?>