I have a download.php file with this source:
<?php
$filename = $_GET['file'];
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header('Content-Description: File Transfer');
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename={$filename}");
header("Expires: 0");
header("Pragma: public");
readfile($filename);
?>
This is just for demonstration sake. It can stream a file and show a download prompt. But this only works with one file. What if I want to stream two or three files? Is there any more elegant solution than to keep redirecting the page two or three times until all files are downloaded?
You could have an html page with multiple iframes, each iframe pointing to a download url.
It's not possible to stream multiple files, not cross-browser in any case.
You could stream a zip-file with multiple files though.
Related
I have a zip files that I want users to be able to download. The trick is I don't want the users to see what the url is and I don't want to download the file to my server.
So I want users to click a link like this:
http://example.com/download/4
which server-side accesses my S3 bucket with this url:
https://s3.amazonaws.com/my-bucket/uploads/4.zip
I've tried cURL, using S3 methods, and various headers() in my download($file_id) function but can't get this to work. This has to be easy, right?
Your right, its quite easy. Probably you will have to write something like this:
$path = '/my-bucket/uploads/4.zip'; // the file made available for download via this PHP file
$mm_type="application/x-compressed"; // modify accordingly to the file type of $path, but in most cases no need to do so
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($path)) );
header('Content-Disposition: attachment; filename="'.basename($path).'"');
header("Content-Transfer-Encoding: binary\n");
readfile($path); // outputs the content of the file
exit();
You set various headers to make your user download the .zip. Afterwards you put your file into the output buffer with readfile() Afterwards you end your script with exit() for security's sake. This should work for you! Remember to change the path to your file.
Thanks #Xatenev for the help. This is actually what worked for me:
$path = '/my-bucket/uploads/4.zip'; // the file made available for download via this PHP file
$mm_type="application/zip"; // modify accordingly to the file type of $path, but in most cases no need to do so
header("Content-Type: " . $mm_type);
header('Content-Disposition: attachment; filename="'.basename($path).'"');
readfile($path); // outputs the content of the file
exit();
<?php
$file = $_GET['name'];
$path = './curr/'.$file.'.pdf'; // the file made available for download via this PHP file
$mm_type="application/pdf"; // modify accordingly to the file type of $path, but in most cases no need to do so
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($path)) );
header('Content-Disposition: attachment; filename="'.basename($path).'"');
header("Content-Transfer-Encoding: binary\n");
readfile($path); // outputs the content of the file
?>
This is a snippet of code in file.php. I am referring to the file using:
File 1
The intent is that on click of the link, ./curr/First File.pdf should download. I do get a download, but on inspecting, it's the webpage with the pdf embedded in the file. Could anyone assist?
If you want to have just the PDF loaded, the above code is all code to be executed.
Drop all surrounding menus, header or footers. Make sure, that no HTML or any other output besides the PDF from readfile() remains, when calling this link.
Try to change the content type to :
header("Content-Type: application/force-download");
I am dynamically generating image in php. The image has a fixed name. I wants a button or hyperlink and onclick of that button, users should be able to export image rather than right click and save as image options. The problem is that in case of excel,pdf or doc files, I can specify the path of file and browser automatically asks for the open or save option but for images, it opens them in separate window.I want same dialog box for saving the image as for the other files like excel,pdf.Please help me on this.
Thanks
you can set the header to force download (for PHP):
header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=$file");
header("Content-Type: image/png");
Then you can read the file
readfile($file);
What you can do is force image download using .htaccess if you are using Apache or directly via php using header tags
PHP Example
$file = "PATH TO FILE" ;
$fileName = basename($file);
$fileSize = filesize($file);
set_time_limit(0);
header("Pragma: public");
header("Expires: 0"); // Cache Options
header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); // Cache Options
header("Content-type: application/octet-stream");
header("Content-Disposition: filename=\" " . $fileName ."\"");
header("Content-length: $fileSize");
readfile($file);
I'm using a script to download video, but it take lot of time to download. Are there any processes or other scripts that could help me?
// set headers
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Type: $mtype");
header("Content-Disposition: attachment; filename=\"$asfname\"");
header("Content-Transfer-Encoding: binary");
header("Content-Length: " . $fsize);
// download
// #readfile($file_path);
$file = #fopen($file_path,"rb");
if ($file) {
while(!feof($file)) {
print(fread($file, 1024*100));
flush();
if (connection_status()!=0) {
#fclose($file);
die();
}
}
#fclose($file);
}
Using the readfile() function (as you originally had) will allow you to spool directly from the file to output, rather than using a chunking loop and printing as you're doing. So why have you chosen to do this chunk loop?
As above, readfile() is one way.
The other, even more preferred method depends on your webserver. NginX, Lighttpd and there's also a module for Apache, allows you to pass a header with a filepath/name to the server, and it will send the file directly from the server itself, and so not need to use PHP resources to do it. If thats not possible, then readfile() is the best you probably have - if you can't just give someone a direct URL to download it.
I would to know the command in a PHP script to get in output and save a file from my site.
Thanks
See here for a good description of how to force the output of a php script to be a download.
The basics of it are:
// Set headers
header("Cache-Control: public");
header("Content-Description: File Download");
header("Content-Disposition: attachment; filename=" + $filename);
header("Content-Type: application/zip"); // or whatever the mime-type is
// for the file you want to download
header("Content-Transfer-Encoding: binary");
// Read the file from disk
readfile($full_path_to_file);
As an addition (provided by Gordon's comment), see the 1st example on the php documentation here
At the End of the files or used in clicking files, you can add this
$filesh = "check.xls";
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Disposition: attachment; filename=".basename($filesh));
header("Content-Description: File Transfer");
readfile($filesh);
if you got any header using problem means, top of the file you can add ob_start(); function
If you mean getting output, contents from other site or location, this what you need file_get_contents