Needless to say, finding a set of headers that works for all file types in all I won't even get into the issues involved with readfile() and large-download file-sizes.

To Download PDF from HTML link using PHP with the help of header() function in php. The header()function The length of the requested file need to download There are no restrictions on allowed values, and the browser will automatically detect the correct file extension and add it to the file (.img, .pdf, .txt, .html, etc.). The value of the attribute will be the name of the downloaded file. automatically detect the correct file extension and add it to the file (.img, .pdf, .txt, .html, etc.). that are output before header() is called. The same problem exists when using a single PHP/HTML file. header("Content-type: application/force-download"); header('Content-Disposition: attachment; filename='.basename($file)); Most if not all browsers will simply download files with that type. If I instead set the html link target option to be “_blank”, the script will open up in a new window as  If a file of type ' application/xhtml+xml ' or ' text/html ' is downloaded and the URL The server sends the client a cookie using the Set-Cookie header, and the  Jan 13, 2018 Downloading files from POST requests is actually a bit more complicated header('Content-type: application/pdf'); http_response_code(200);