Prompt user to download PDF file instead of opening

Question

In my project site, if I click on a link, the PDF opens in a new or parent window. Well I want a box to appear that prompts the user to download the file instead of opening

Answer 1

If you are getting a corrupted file error try this:

header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false);
header('Content-Type: application/pdf');
header('Content-disposition: attachment; filename=' . basename($file));
header("Content-Transfer-Encoding:  binary");
header('Content-Length: ' . filesize($file)); // provide file size
header('Connection: close');
readfile($file);

Where $file is the full path or url of the file.