Php download pdf file not working

Question

I use this code for download pdf file. Downloading started but when downloading is finish adobe could not open pdf file.

$file_url = "http://kolikokostagrejanje.​rs/step7/proracun-short.pdf";
header('Content-Type: application/pdf');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=proracun-short-skinuto.pdf");
readfile($file_url);

Current PHP version: 5.4.36

SOLVED

The problem was that pdf file has not had a permission 777.

Answer 1

Is file having read permission. Also check if same problem is occurring for other file (in case file is corrupted)

Answer 2

my guess is that your script may contain NOTICE or WARNING, so try disabling error reporting in the script to solve the problem.

error_reporting(0);

and it's always better to use readfile with error suppression operator especially when performing a download task

@readfile($path)