Using PHP Header to force download - php

I'm using this code to force a download using headers, the file name is renamed correctly but the file is empty, the actual file isn't being downloaded.
$file = url . '/uploads/audio/' . $trackFile;
$tmp = explode(".", $file);
$newTrackName = $trackTitle . '.' . end($tmp);
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $newTrackName);
header('Content-Transfer-Encoding: binary');
header('Connection: Keep-Alive');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');

You are missing the actual sending of the file e.g.
echo readfile($file);
exit;
or
header("Location: $file");

You need to add..
readfile($file);
exit;

You are correct and I upvoted both answers but I also found that the new version of cpanel turned of fopen by default, I had to enable fopen.

Related

Can create zip archive in PHP, but cannot download it correctly2

I want to comment for this post "link" , but my reputation is lower tan 50, so I have to ask nearly the same question again.
I get the following error message from unzip (after downloading it from my website).
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive. unzip: cannot find zipfile directory
in one of foo.zip or foo.zip.zip, and cannot find foo.zip.ZIP, period.
On my lampp server (testsetup) (at /opt/lampp/myprojects/tmp/foo.zip) unzip works perfect ( no error messages).
I am using this code:
$filename = 'foo.zip';
$path = '/opt/lampp/myprojects/tmp/foo.zip';
if(!file_exists($path))
{
die('Error: file not found');
}
else {
$handle = fopen($path, "r");
header('Content-Description: File Transfer');
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename='.$filename);
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');
header('Pragma: public');
header('Content-Length: ' . filesize($path));
flush();
readfile($path);
fclose($handle);
Can anybody see my mistake and help me to solve this problems? I am trying to fix it for about 5h but I am not able to solve the problem.
Use the following to send your ZIP file to the user/browser. No reason to open it first.
ob_end_clean();
$FileBytes = filesize($temp_file);
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="WhateverYourFileNameIs.zip"');
header('Content-Length: ' . $FileBytes);
readfile($temp_file);
<?php
$filename = 'foo.zip';
$path = '/tmp/foo.zip';
if(!file_exists($path)) {
die('Error: file not found');
}
header('Content-Description: File Transfer');
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename='.$filename);
header('Content-Transfer-Encoding: binary');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Expires: 0');
header('Pragma: public');
header('Content-Length: ' . filesize($path));
readfile($path);

PHP - Forcing download a file not working

code.php
$code = $_GET["code"];
$file = 'code/'.$code.'.html';
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;
}
Generated URL to download the file:
http://www.example.com/code.php?code=yoursite.com_nbsp63ibrf
Well, I want to forcing download the html file, above code not working and it just preview the file at browser!
file_exists() returns false. Change your path with document root:
$code = $_GET["code"];
$file = $_SERVER['DOCUMENT_ROOT'] . '/code/' . $code . '.html'; // set your path from document root.
if (file_exists($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;
}
Try changing the content type to match the file type and setting the transfer encoding to binary:
header('Content-Transfer-Encoding: binary');
header('Content-Type: text/html');
Try this
$code = $_GET["code"];
$file = $_SERVER['DOCUMENT_ROOT'] . '/code/' . $code . '.html'; // set your path from document root.
if (file_exists($file)) {
header("Content-Type: text/html");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
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;
}
unfortunately it was a encoding issue. I changed code.php encoding from UTF-8 to UTF-8 Without BOM then problem solved. Thanks for all answers and helps. I forgot that PHP header only works with UTF-8 Without BOM.
This is actually not possible.
The browser can always decide on its own, if the file should be downloaded or not.
The furthest you can go is sending the content-disposition header.

What is the correct syntax for defining filename with variables?

Regarding downloading files and defining the headers, I am having trouble assigning a dynamic filename to my files. When using the code below :
header("Content-Disposition: attachment; filename=test.csv");
A test.csv file is generated for download. However if I use this:
header('Content-Disposition: attachment; filename=' . $filename . '.csv');
It generates a .php file instead. Using this method also doesn't pass the Content-Disposition or filename to the header.
Full code:
session_start();
$file =$_SESSION['csvf'];
$filename = $file."_".date("Y-m-d_H-i",time());
header ( "Content-type: text/csv" );
header("Content-Disposition: attachment; filename=test.csv");
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
print($file);
exit ();
What is the correct syntax?
EDIT
Working Code after suggestions
session_start ();
$file = $_SESSION ['csvf'];
$filename =date ( "Y-m-d_H-i", time () );
header ( "Content-type: text/csv" );
header ( "Content-Disposition: attachment; filename=".$filename );
header ( 'Expires: 0' );
header ( 'Cache-Control: must-revalidate' );
header ( 'Pragma: public' );
header ( 'Content-Length: ' . filesize ( $file ) );
print ($file) ;
exit ();
I don't see the path to example.csv specified on your code, you need to give the full path to $file, i.e.:
$mySession = $_SESSION['csvf'];
//since $_SESSION['csvf'] contains the actual data you cannot use it for filename
$filename = date("Y-m-d_H-i",time()).".csv";
//write $mySession contents to file. Make sure this folder is writable
file_put_contents("/home/site/csvfolder/$filename", $mySession);
$file = "/home/site/csvfolder/$filename";
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-type: text/csv');
header('Content-Disposition: attachment; filename='.$filename);
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
readfile($file);
exit;
}
Please Use Like as follows,I am using this for me.
header("Content-Type: application/vnd.ms-excel; charset=utf-8");
header("Content-Disposition: attachment; filename=".$fileName);
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
In place of application/vnd.ms-excel use your file format.It is for Microsoft Excel.
Try with this:
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=test.csv');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
readfile($file);
exit;
You can see more about download files with PHP here:
http://php.net/manual/en/function.readfile.php
Try With Below code , it's work for me
$file =$_SESSION['csvf'];
$filename = $file."_".date("Y-m-d_H-i",time()).".csv";
header ( "Content-type: text/csv" );
header("Content-Disposition: attachment; filename=".$filename);
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
print($file);
exit ();
Below is a snippet for a .zip file with some descriptions on some information that header requires, perhaps a good practice is to get the information and some validations before writing headers.
Another shorter example is also included,
// defines filename, type, path, size and a reference to file (handler)
// to set as values for file header
$filename = $survey_id . '.zip';
// define path to the file to be get file size on the next line
$filepath = [path to file]. '/' . $filename;
// used by 'Content-length'
$filesize = filesize($filepath);
// using fopen to get a file handler, 'r' for read, 'b' for binary (zip file)
$file_pointer = fopen($filepath, 'rb');
// check if file exists
if(is_file($filepath))
{
// valid file?
if($filesize && $file_pointer)
{
// some required header information to describe file, see [docs][1]
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: zip file");
header("Content-Type: application/zip");
header("Content-Type: application/force-download");
header("Content-Disposition: attachment; filename=" . $filename);
header("Content-Transfer-Encoding: binary");
header("Content-length: " . $filesize);
fpassthru($file_pointer);
// close
fclose($file_pointer);
}
}
Also, checkout readfile(), a shorter snippet below
<?php
$file = 'monkey.gif';
if (file_exists($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;
}
?>
Hope this helps!
Just escape your php properly like so:
header('Content-Disposition: attachment; filename=' . time() . '.export.csv');
This example will put a UNIX timestamp prepended to the file name. Of course you could get crazy with programmatically using variables or inbuilt php functions, but this is just the example.
Here is more of an example. This file name will be produced when running this php code.
2019-05-18-contacts-main-export-by-Garrick.csv
header('Content-Disposition: attachment; filename=' . date("Y-m-d") . '-contacts-main-export-by-' . $uidName . '.csv');

php - Filename of file when using firefox to download

I see this tutorial to make download file but I have a problem
Here is my example
$file_url = "D:/my file name.doc"
header('Content-Type: text/json; charset=UTF-8;');
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . basename($file_url)."");
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file_url));
ob_clean();
flush();
readfile($file_url);
Everything's well in ie or chrome. But when I using firefox to download file. The file download has my is the file name? How to fix that thanks
header('Content-Disposition: attachment; filename="' .basename($file_url).'"');
First of all you are missing ; on the end of the first line.
I think the problem is in filename with spaces.
Try to use readfile(urlencode($file_url)); instead of readfile($file_url);
You should quote filename.
header('Content-Disposition: attachment; filename="' . basename($file_url) . '"');
EDIT: It was as selected answer just with typo in it. Now I fixed it.

Download xlsx file using php

I need make xlsx file download from my site (but not from directly open file url like this: http://site.com/file.xlsx )
So, this is php code
$file = "somefile.xlsx";
header('Content-Description: File Transfer');
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
file is downloaded, his extension is .xlsx, but when trying open this file in ms excel, file not opened and I got error : excel cannot open the file.xlsx because the file format or file extension is not valid
Tell please, why this happened? where I am wrong?
After many years, I got same problem, and after searching, I got here again ))
This is solution, that worked for me:
$file = "somefile.xlsx";
// define file $mime type here
ob_end_clean(); // this is solution
header('Content-Description: File Transfer');
header('Content-Type: ' . $mime);
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"" . basename($file) . "\"");
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
readfile($file);
You must be using this code in middle of some other file.
The problem with headers is they need to be set first on a page. They will not work if you have even 1 single space echoing before them. So you need to ob_clean() [clean the buffer] before you are setting headers
Try
ob_clean();
flush();
$file = "somefile.xlsx";
header('Content-Description: File Transfer');
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
readfile($file);
Remove:
ob_clean();
flush();
Add at the end of code:
exit();
The issue is that flush() will also throw in your *.xlsx file content some garbage it has in it and that will corupt your file, even if you use ob_clean();
For a better understanding go to php.net and read the difference between flush(), ob_flush() and find that you didn't even need them in the first case. Therefore you won't need the ob_clean() too.
This works for me:
header('Content-Description: File Transfer');
header("Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
header("Content-Disposition: attachment; filename=\"".basename($fileLocation)."\"");
header("Content-Transfer-Encoding: binary");
header("Expires: 0");
header("Pragma: public");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header('Content-Length: ' . filesize($fileLocation)); //Remove
ob_clean();
flush();
readfile($fileLocation);

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