Force File Download in PHP

php - How to force download of a file?

You could try something like this:

<?php

// Locate.
$file_name = 'file.avi';
$file_url = 'http://www.myremoteserver.com/' . $file_name;

// Configure.
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary"); 
header("Content-disposition: attachment; filename=\"".$file_name."\"");

// Actual download.
readfile($file_url);

// Finally, just to be sure that remaining script does not output anything.
exit;

I just tested it and it works for me.

Please note that for readfile to be able to read a remote url, you need to have your fopen_wrappers enabled.

How to force a file to download in PHP

If you want to force a download, you can use something like the following:

<?php
    // Fetch the file info.
    $filePath = '/path/to/file/on/disk.jpg';

    if(file_exists($filePath)) {
        $fileName = basename($filePath);
        $fileSize = filesize($filePath);

        // Output headers.
        header("Cache-Control: private");
        header("Content-Type: application/stream");
        header("Content-Length: ".$fileSize);
        header("Content-Disposition: attachment; filename=".$fileName);

        // Output file.
        readfile ($filePath);                   
        exit();
    }
    else {
        die('The provided file path is not valid.');
    }
?>

If you simply link to this script using a normal link the file will be downloaded.

Incidentally, the code snippet above needs to be executed at the start of a page (before any headers or HTML output had occurred.) Also take care if you decide to create a function based around this for downloading arbitrary files - you'll need to ensure that you prevent directory traversal (realpath is handy), only permit downloads from within a defined area, etc. if you're accepting input from a $_GET or $_POST.

How to force download different type of extension file php

To download any file extension forcefully. You can first read the file and writes that file to the output buffer for download.

Here is the code, to download files. Hopes, it will also help to fix your problem.

This code is based on: http://php.net/manual/en/function.readfile.php

<?php
// You can used any file extension to output the file for download
$file = 'monkey.gif';

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename="'.basename($file).'"');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    readfile($file);
    exit;
}
?>

Force file download with php using header()

The problem was that I used ajax to post the message to the server, when I used a direct link to download the file everything worked fine.

I used this other Stackoverflow Q&A material instead, it worked great for me:

• Ajax File Download using Jquery, PHP

Write a text file and force to download with php

use readfile() and application/octet-stream headers

<?php
    $handle = fopen("file.txt", "w");
    fwrite($handle, "text1.....");
    fclose($handle);

    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename('file.txt'));
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize('file.txt'));
    readfile('file.txt');
    exit;
?>

Force-downloading, from php file

THis is hard - most php configuration will fail after 30 seconds. If you own php.ini you can change that to longer limit. But still - is that even worth it? I mean - the files can get bigger or network slower - and once more you will hit the timeout.

This is why downloaders were made - to download big files in smaller chunks Half Crazed showed you code for that i THIS answer (its not only one - this only takes into account one of the ways clients negotiate the transfers - but still its a good start).

Mega.co.nz for example uses new html5 features. Downloads the file in browser using chunks, joining the file on user and and then ,,downloading'' it from the browser disk space. It can resume files, pause files and so on. (Sorry - no code for that as it would be quite big and include more than one language (php, js)).

PS: change yours readfile($path); into:

$handle=fopen($path, 'rb');
while (!feof($handle))
{
    echo fread($handle, 8192);
    flush();
}
fclose($handle);

This will not load WHOLE file into memory, just parts of 8KiB at once and then send them to user.

php file force download

I've had a chance to work it out. Your problem is two-fold.

First, remove the www. from the url.

Second, remove the call to filesize($file) which is throwing an error because PHP doesn't know the size of the file before it downloads the file. (really, just remove the whole line)

Removing these two things, I was successful.

How to Force a file to download using PHP on mobile Browsers?

Try with the following headers:

header('Content-Type: application/force-download');
header('Content-Disposition: attachment; filename="filename"');

The idea is to set the content type to something that the browser doesn't know how to open - that way it will show the save dialogue. You can try it with the actual MIME type, it should work, but I can't test it right now.

---

Related Topics