I'm trying to force a download when opening a page in php using readfile, but it doesn't work. When I go to the url https://www.inbrax.cl/belong-gracias/?docsbelong=BELONG-DICCIONARIO-CAP-1.pdf it displays the error message: 'El archivo no existe.', but if I console.log $fileName and $filePath it shows the correct information. It just doesn't execute the download.
I'm only starting to use php so I'm not sure what's the error.
I've tried adjusting the headers and changing the path but it hasn't worked yet.
Here's my code:
<?php
if(!empty($_GET['docsbelong'])){
// Define file name and path
$fileName = basename($_GET['docsbelong']);
$filePath = './pdf/'.$fileName;
if(!empty($fileName) && file_exists($filePath)){
// Define headers
header("Cache-Control: public, must-revalidate, post-check=0, pre-check=0");
header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=\"$fileName\"");
header("Content-Type: application/pdf");
header("Content-Transfer-Encoding: binary");
// Read the file
readfile($fileName);
exit;
}else{
echo 'El archivo no existe.';
}
}
?>
You just need the URL in a web page none of that non working code its superfluous eye candy to serving a download URL. You could add a static thumbnail of the cover as time better spent as just needing a second line of code.
Click here to Download and View,<br>or rightclick to Save As Download<br>BELONG-DICCIONARIO-CAP-1
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();
I can't seem to figure this out and I know it's something simple. I am building the back-end to a very basic content management system. For this specific piece, I am just trying to create a PHP link that allows for a file (the client's CV) to be downloaded.
MY PROBLEM:
When the link to download the file is clicked, instead of the browser prompting you to choose a local directory to save the file to - it simply displays the file and a bunch of symbols before and after the document's contents (I am assuming this is the file's opening and closing exif data for an application to decipher).
How could I go about forcing the browser to prompt the user for a "Save As..." box?
<?php
require("connect.php");
$query = "SELECT * FROM kb_info LIMIT 1";
$result = mysql_query($query, $link);
while ($row = mysql_fetch_array($result)) {
$file_extension = end(explode(".", $row["extension"]));
if ($file_extension == doc) {
header('Content-disposition: attachment; filename='.$row["extension"]);
header('Content-type: application/doc');
header ("Content-Length: ".filesize($row["extension"]));
readfile($row["extension"]);
exit;
}
if ($file_extension == docx) {
header('Content-disposition: attachment; filename='.$row["extension"]);
header('Content-type: application/docx');
header ("Content-Length: ".filesize($row["extension"]));
readfile($row["extension"]);
exit;
}
if ($file_extension == pdf) {
header('Content-disposition: attachment; filename='.$row["extension"]);
header('Content-type: application/pdf');
header ("Content-Length: ".filesize($row["extension"]));
readfile($row["extension"]);
exit;
}
}
?>
Many thanks,
Joshie
I think the problem can be that there is some whitespace somewhere in the PHP files, which causes that the headers are not sent correctly and therefore you see the whole output.
I would suggest the followings steps:
check the "connect.php" and look for empty lines/spaces at the begining/ending of the file and remove them
adapt you php files that way, that you leave out the ending tag ?> at the end of the file - that way you do not get empty lines at the end of the file
if the above are not enough you need to check your apache and php error log and/or set up error loging, so you see also warnings - that you you would be informed if the headers are not sent correctly or if there is some other error
Headers I use for download:
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-type: application/force-download");
header("Content-Disposition: attachment; filename=".$file);
header("Content-Type: application/octet-stream");
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$bytes."");
I have the following code to push a zip file for download.
$filename = "ResourcePack_".time().".zip";
$destination = $basepath."downloads/$filename";
if($this->createdownload($files,$destination,false)){
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Length: ". filesize("$destination").";");
header("Content-Disposition: attachment; filename='$filename'");
header("Content-Type: application/octet-stream; ");
header("Content-Transfer-Encoding: binary");
ob_end_flush();
#readfile($destination);
if(file_exists($destination)){
unlink($destination);
}
}
I know the createdownload function is working to generate the zip file just fine because I see the file being created on the server. The problem is file is being written to the browser as a bunch of garbage instead of opening a download stream. Am I missing something in my headers?
EDIT
I was right. My problem is not with the php, but that calling the php file that generates this code via a JQuery $.ajax call is the problem. Using $.ajax automatically sets the Accept-Encoding request header to values incompatible with zip files. So, intead of using $.ajax I just used a simple window.open javascript command to call the same php page and it works just fine with the headers.
try to put a die after the #readfile
and remove the #, to see if you have any other error related with the file reading.
i have some code doing the same thing and this works for me:
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private", false); // required for certain browsers
header('Content-Disposition: inline; filename="' . $filename . '"');
header('Content-type: application/zip');
//header("Content-Transfer-Encoding: binary");
header("Content-Length: " . filesize($destination));
readfile($destination);
die();
try passing proper type for that file. I think its fileinfo mime type see http://www.php.net/manual/en/ref.fileinfo.php
header("Content-Type: $file_type");
Also you have semicolon after octet-stream remove it
header("Content-type: application/octet-stream");
The builtin browser of my ebook-reader (Sony PRS-T1) somehow doesn't like to download .epub files.
Normally it opens .epub files as if they were text-files.
With this php-download-script I managed to force the browser to download files I store on my server:
<?php
$path = $_GET['path'];
$mimeType = $_GET['mimeType'];
if(!file_exists($path)) {
// File doesn't exist, output error
die('file not found');
} else {
$size = filesize($path);
$file = basename($path);
// Set headers
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=\"$file\"");
header("Content-Type: $mimeType");
header("Content-Transfer-Encoding: binary");
header("Content-Length: $size");
// Read the file from disk
readfile($path);
}
exit();
?>
Now, the PRS-T1 would download the file but for some reason I don't understand it will change the file extension from .epub to .htm - this is weird.
But it seems like there is a way to do it right: when I download a .epub file from readbeam.com it works just like expected (I found this hint at http://www.mobileread.com/forums/showthread.php?t=163466).
What is it, that makes the difference betweeen their configuration and mine?
Here's what I found out using firebug:
http://tinypic.com/r/vzzkzp/5
http://tinypic.com/r/2h7pbth/5
Your Content-Type header doesn't match the one from readbeam.
application/epub zip != application/epub+zip
The + is probably being seen by PHP as a space since it seems you are passing it via $_GET.
I've been wrestling around with this for awhile now. I am trying to make it so when a user click a link it will force a download. Here's my code so far:
<?php
function Download()
{
$fullpath = $_SERVER['DOCUMENT_ROOT']."front.dwg"; //Full path of document
$filename = "front.dwg"; //Document file nmae
$mm_type="application/octet-stream";
header("Cache-Control: public, must-revalidate");
header("Pragma: hack");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($fullpath)) );
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary\n");
}
?>
<html>
<body>
Test
</body>
</html>
Your going to need to pull out your function and save it as "download.php"
Then just have a link that goes to it:
<a href="download.php">
Download.php should look like this:
$fullpath = $_SERVER['DOCUMENT_ROOT']."front.dwg"; //Full path of document
$filename = "front.dwg"; //Document file nmae
$mm_type="application/octet-stream";
header("Cache-Control: public, must-revalidate");
header("Pragma: hack");
header("Content-Type: " . $mm_type);
header("Content-Length: " .(string)(filesize($fullpath)) );
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary\n");
PHP is not a client-side function. You can't say onclick="somePHP".
You need a separate PHP script where you will force your download in, and simply link to that script.
In this script, you also need to actually output the file contents.
You need to set the appropriate calls to header first. These have worked for me:
header('Pragma: public'); // required
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false);
header("Content-disposition: attachment; filename=\"{$filename}\"");
header("Content-Type: {$mime}"); // also works with file extension
header('Content-Transfer-Encoding: binary');
header('Content-Length: '.filesize($filename));
readfile($filename);
die();
You can never FORCE a download. You can change the window location to the download file and it will prompt them, but if you could force downloads, there would be some major security issues.
First, your $fullpath may not contain the data you expect, because you did not insert a forward slash ('/') before the filename. This is correct:
$fullpath = $_SERVER['DOCUMENT_ROOT']."/front.dwg";
You can check the contents of $fullpath using error_log( "Fullpath: $fullpath" ); or echo "Fullpath: $fullpath\n".
Second, you need to make the PHP portion of your code a standalone script. You will not be able to embed PHP function calls in Javascript. All of your PHP executes before the Javascript runs, so you need a way to call the PHP separately.
Third, you should verify that the file exists and is readable using file_exists() and is_readable(). If PHP reports that the file does not exists, you should specify the full path. If it is not readable, you can change the file permissions to allow your PHP script to read it.