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PHP - Force file to download - not working
I'm trying to force the download of a file instead of displaying it in a browser and the below code allows me to download the file, but seems not to get the full file. I can not display any of the jpgs that I download. Any ideas on what I have wrong? Keep in mind images may be just one type of a download, as there could be .txt or .pdf etc...
<?php
$file="c:\upload_test\\robot-100_1.jpg"; //file location
header("Content-Description: File Transfer");
header("Content-Type: application/octet-stream");
header('Content-Disposition: attachment; filename="'.basename($file).'"');
header('Content-Length: ' . filesize($file));
header('Connection: close');
readfile($file);
?>
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Remove line 7.
File is not downloading because you are saying browser that connection is closed. After receiving this header browser closes connection.
File is not downloading because you are saying browser that connection is closed. After receiving this header browser closes connection.
Even if I remove line 7, same issue.
Also changed line 4 to : image/jpg
It always appears the file is just a little smaller than what is suppose to be.
Also changed line 4 to : image/jpg
It always appears the file is just a little smaller than what is suppose to be.
This is Ray Paseur's download demo that works 'perfectly'. I modified one line to use a local file on my system.
<?php // RAY_force_download.php
error_reporting(E_ALL);
// DEMONSTRATE HOW TO CAUSE A FILE DOWNLOAD
// REQUIRED FOR USE WITH THE PHP date() FUNCTIONS
date_default_timezone_set('America/New_York');
// A FILE TO DOWNLOAD - THIS LINK COULD COME IN THE URL VIA $_GET, OR COULD BE GENERATED INSIDE THE SCRIPT
//$url = "http://www.LAPRBass.com/piechart.png";
$url = "../dibsw2k-logo.gif";
// THE USE CASE FOR THE FUNCTION
force_download($url);
// FUNCTION TO FORCE A DOWNLOAD FROM A FILE
function force_download($filename)
{
// GET THE CONTENTS OF THE FILE
$filedata = file_get_contents($filename);
if ($filedata)
{
// GET A NAME FOR THE FILE
$basename = basename($filename);
// THESE HEADERS ARE USED ON ALL BROWSERS
header("Content-Type: application-x/force-download");
header("Content-Disposition: attachment; filename=$basename");
header("Content-length: ".(string)(strlen($filedata)));
header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2, date("i"), date("s"), date("m"), date("d"), date("Y")))." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
// THIS HEADER MUST BE OMITTED FOR IE 6+
if (FALSE === strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE '))
{
header("Cache-Control: no-cache, must-revalidate");
}
// THIS IS THE LAST HEADER
header("Pragma: no-cache");
// FLUSH THE HEADERS TO THE BROWSER
flush();
// CAPTURE THE FILE IN THE OUTPUT BUFFERS - WILL BE FLUSHED AT SCRIPT END
ob_start();
echo $filedata;
}
// ERROR
else
{
die("ERROR: UNABLE TO OPEN $filename");
}
}
Are you sure there is nothing wrong with your source image?
The code you works perfectly when I tested it on my own image.
The code you works perfectly when I tested it on my own image.
Can you view the file at the URL by typing its address into a browser window? If so, my force-download script should be able to download it. If not, there may be something wrong with the file or the file path.
Please give us a little more to go on, like a public-facing URL of the file. Once we have that we can experiment with it, and may be able to give you a tested and working example.
Please give us a little more to go on, like a public-facing URL of the file. Once we have that we can experiment with it, and may be able to give you a tested and working example.
<?php // demo/force_download.php
/**
* Show how to force a file download
*
* Choose a file to download, either via a hard-coded file path
* or via a URL parameter like this
*
* path/to/demo/force_download.php?url=path/to/file.txt
*
* If you wanted to use the URL parameter, you might want to
* (1) Secure the script with password protection
* (2) replace the $url variable with something like this:
* $url = $_GET['url'];
*
* If you use the URL parameter, be careful that the script
* does not expose sensitive data on your server!
*/
// WHAT FILE DO WE WANT TO DOWNLOAD?
$url = "http://www.IcoNoun.com/demo/short_text_file.txt";
// USE CASE
force_download($url);
// FUNCTION TO FORCE A DOWNLOAD FROM A FILE
function force_download($url, $filename=NULL)
{
// GET THE DOWNLOAD FILE NAME
if (empty($filename)) $filename = basename($url);
// GET LENGTH AND FILE RESOURCE POINTER
$hdr = get_headers($url, TRUE);
$len = trim($hdr['Content-Length']);
$fpr = fopen($url,'rb');
// ON SUCCESS
if ($fpr)
{
// THESE HEADERS ARE USED ON ALL BROWSERS
header("Content-Type: application-x/force-download");
header("Content-Disposition: attachment; filename=$filename");
header("Content-length: $len");
header("Expires: ".gmdate("D, d M Y H:i:s", mktime(date("H")+2, date("i"), date("s"), date("m"), date("d"), date("Y")))." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
// THIS HEADER MUST BE OMITTED FOR IE 6+
if (FALSE === strpos($_SERVER["HTTP_USER_AGENT"], 'MSIE '))
{
header("Cache-Control: no-cache, must-revalidate");
}
// THIS IS THE LAST HEADER
header("Pragma: no-cache");
// FLUSH THE HEADERS TO THE BROWSER
flush();
// WRITE THE FILE
fpassthru($fpr);
}
// ERROR
else
{
trigger_error("ERROR: UNABLE TO OPEN $url", E_USER_ERROR);
}
}
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