When I run the function below it locates and reads the file, displaying the results in the my Chrome Dev Tools preview tab correctly in the csv format. But it's not downloading it. If I link directly to the file in my browser it downloads it, so it doesn't appear to be an .htaccess issue. I've used the example in the documentation and many variations of it found here on Stack Overflow but the results are the same: the file displays in my preview tab in dev tools (and the same goes with Firefox as well) but no download. My code:
public function download()
{
$file = $this->dir;
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename='. $file);
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit;
}
}
I'm developing locally with latest Wamp server. When I push/pull to my remote, the result is the same.
From your question, it sounds like you might be trying to download your file via an AJAX request.
If so, I don't believe you can do this. Instead you could open the link to the file in a new window, which will successfully download the file.
Related
hi i need help i am using the code below from php.net to allow site visitors download documents on my site
<?php
$file = $_GET['file'];;
if (file_exists($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));
ob_clean();
flush();
readfile($file);
exit;
}
?>
my problem is that instead of the code outputting a dialog box in order for me to save/download the document as outlined here http://www.php.net/manual/en/function.readfile.php the code opens up in a new page showing abnormal data...the code works perfectly on xampp localhost but not on the server
what might be the problem??
The code seems to be perfect. My thoughts is that the configuration of php.ini in the server and the xampp might be different.
My suggestion is to run <?php phpinfo(); ?> in both server and xampp and compare the configuration and match the xampp's configuration in the server.
I'm using this script:
http://www.webvamp.co.uk/blog/coding/creating-one-time-download-links/
to allow users download files (one time). Everything works fine with small files. Now i'm trying to do the same but with larger file 1.2 GB. Instead of forcing user to download file, script show off the relative patch to the file! Is there any way to modify the script or its a fault of the server configuration?
Thanks for help!
Looking for the code i think it fails on large files due to memory limitation. Script reads the whole file in memory via file_get_contents() before sending it. I suspect, >1Gb files will cause the problems with memory.
Try to replace following lines in download.php script:
//get the file content
$strFile = file_get_contents($strDownload);
//set the headers to force a download
header("Content-type: application/force-download");
header("Content-Disposition: attachment;
filename=\"".str_replace(" ", "_", $arrCheck['file'])."\"");
//echo the file to the user
echo $strFile;
to:
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($strDownload));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($strDownload));
ob_clean();
flush();
readfile($strDownload);
This may be help.
Note from manual: readfile() will not present any memory issues, even when sending large files, on its own
I am using WordPress for a web site, and would like to include a menu item to download a zip file from the web site to the local drive. I tried using the following function:
function download_binary_file($file) {
if (file_exists($file)) {
$base_name = basename($file);
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.$base_name.'"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit;
}
}
But when this function is executed, instead of getting a dialog to save the file, the contents of the zip file are displayed in my browser. Any ideas?
Upload your zip file, then create the menu item, then add a htaccess redirect from the menu item to the zip file url. Zip files usually auto download.. I know there are also download manager plugins for wordpress, that make the process pretty easy.
I have this code:
$file = $tempDir . "/download.zip";
// there's some omitted code here that creates the file that's to be downloaded
if(file_exists($file) && is_readable($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename='.basename($file));
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($file));
ob_clean();
flush();
readfile($file);
}else{
return "Error: Failed to retrieve file.";
}
The code that generates the file works fine, and after hitting the button for downloading, I see it appear in its appropriate place, at 1 KB. The file is also usable. When I download, it even says it's "973 bytes". When the file actually downloads though, it's suddenly 9.1 KB, and completely corrupted. Why?
does the code omitted run a background program? If you run a command line program (exec etc) to create the zip file you may be serving an incomplete file.
upload a zip file that you know works, remove the code to create a zip and see if that is served correctly. if it isn't let me know and i'll take a look.
is this windows or linux?
also the size of the file may vary slightly. windows adds meta data, created,added,modified etc that can effect the file size
I have an mp3 on my server (urls are just examples):
http://www.my-server.com/myaudio.mp3
I have a php script on the server at:
http://www.my-server.com/testmp3.php
Which contains the following code (which I got here):
<?
$file = "myaudio.mp3";
if (file_exists($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
ob_clean();
flush();
readfile($file);
exit;
}
?>
Is this all I have to do to mimic the behavior so that both request behave the same way and return the exact same response? Or is there anything I'm missing.
I'm using some streaming code on iOS (not relevant here) and both requests stream the audio fine but I can't seek properly using the php request but I can with the mp3 request directly.
So without getting into details about the app itself I wanted to eliminate this one variable first. Is there anything I need to do to make sure that from another app's perspective these two request will return the exact same data?
Thanks for any input you can give me here.
Update
It turns out my question really should have read "how do you support seeking of an mp3 when returning from a php script?".
To support seeking, you often will have to support a range request.
From the RFC: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35
See also: Resumable downloads when using PHP to send the file?
Its probably better to handle this with a .htaccess modification rather than some PHP code.
Here's a link on htaccess to get you started.
If you have a whole directory of .mp3 files that you want to appear as downloads instead of playing it in browser, you'd simply modify the .htaccess file in that folder to include
AddType application/octet-stream .mp3