php - How to force download of a file?
You could try something like this:
$file_name = 'file.avi';
$file_url = 'http://www.myremoteserver.com/' . $file_name;
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$file_name."\"");
readfile($file_url);
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 $_POST.
Forcing to download a file using PHP
.htaccess Solution
To brute force all CSV files on your server to download, add in your .htaccess file:
AddType application/octet-stream csv
PHP Solution
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename=example.csv');
header('Pragma: no-cache');
readfile("/path/to/yourfile.csv");
php file force download
I've had a chance to work it out. Your problem is two-fold.
First, remove the www.
from the url.
Second, remove the call to filesize($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.
With PHP how to force download of file with randon file name and type
First and foremost create a download handler file which will be accepting parameters.
I'll call it download.php
download.php
<?php
ignore_user_abort(true); // prevents script termination
set_time_limit(0); // prevent time out
$file = isset($_GET['file']) ? $_GET['file'] : ''; //get filename
if ($file) {
$path_info = pathinfo($_GET['file']);
$file_name = $path_info['basename'];
$dir = "uploads"; //directory
$path_to_file = $dir.'/'.$file_name; //full path
if(!file_exists($path_to_file)) { // check if file exist or terminate request
exit('the file does not exist');
}
if(!is_readable($path_to_file)) { //check if file is readable from the directory
exit("security issues. can't read file from folder");
}
// set download headers for file
$finfo = finfo_open(FILEINFO_MIME_TYPE);
header('Content-Type: ' . finfo_file($finfo, $path_to_file));
$finfo = finfo_open(FILEINFO_MIME_ENCODING);
header('Content-Transfer-Encoding: ' . finfo_file($finfo, $path_to_file));
header('Content-disposition: attachment; filename="' . basename($path_to_file) . '"');
readfile($path_to_file); // force download file with readfile()
}
else {
exit('download paramater missing');
}
?>
Usage
<a href="download.php?file=randomfilename.pdf">My pdf </a>
Hope this helps.
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.
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