I am using the following code in a php document to force download of a pdf form since the submission works only after you have it on your local machine rather online.
It downloads the file ok but it corrupts it.
I can no longer open the pdf document.
<?php
$file_name = 'costumer.pdf';
$file_url = 'http://www.lopezi.com/forms/' . $file_name;
header('Content-Type: application/pdf');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$file_name."\"");
readfile($file_url);
?>
The Content-Transfer-Encoding header shouldn't be needed in this case. Further I suspect that you have corruption in the outputted file.
Download it somewhere, open notepad, and drag the file in there. If any PHP warnings or errors were generated you will see them at the top.
Also, try to avoid the option of having more content return from the script, causing problems with the download, end with something like:
die(file_get_contents($file_url));
This way you cannot accidentally break the code easily by adding more output.
Related
I'm trying to use readfile to download a file from the server.
The file definitely exists and when I use the URL in browser directly it downloads the correct file as predicted.
However when I do it with the following code, it download the file with the correct filename but it is completely blank in content, and zero bytyes.
I am wondering if this code is in fact incorrect and it is instead creating a new file, which of course would be blank.
function downloadFile($filename){
$downloadroot = 'http://my.url.co.uk/exports/'.$filename.'.csv';
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename='.$filename.'.csv');
header('Pragma: no-cache');
readfile("$downloadroot");
}
What would be the cause of this? Is there an alternative way to download files from a URL without having to create some sort of "save target as" link?
You could use file_get_contents() see http://php.net/file_get_contents for the full details.
Or if it's only csv's you're trying to read:
http://php.net/manual/en/function.fgetcsv.php
I'm trying to force download a pdf file that I'm generating. I don't need the pdf file to be actually saved on the server.
So when I generate my pdf file, I get the file content. I then encode it with base64. Now the problem is that I need to force download it. I've looked all over the web, but I haven't found any search results that tells me how to do this without the file actually being placed on the site.
I've tried the following code:
header("Content-type: application/pdf");
header("Content-disposition: attachment; filename=\"invoice.pdf\"");
header("Content-Length: ".filesize($pdffile));
readfile(base64_decode($pdffile));
But, it's giving me a corrupt pdf file, (1 kb). The actual file should be around 50kb.
Any ideas, as to what I can try?
readfile trying to output content from file, but you have only data string. Try this instead:
header("Content-type: application/pdf");
header("Content-disposition: attachment; filename=\"invoice.pdf\"");
echo base64_decode($pdffile);
I also suggest rename $pdffile to $pdfcontent for even better clarification.
I'm currently building a script that will allow a user to download a file via a URL without actually seeing the filename or where the file is stored. So far I have everything built out, but I need to know how I would go about calling the file to open and download. I currently have a working version (code below), but for some reason the PHP is corrupting the download. Everytime I try to open a file that downloads to my desktop I get a corrupt error message. When I open the same file on the server itself, the file works just fine.
URL Structure:
http://www.example.com/download/file/cjVQv0ng0zr2
Code that initiates the download
$fullpath = BASE_PATH . '../uploads/brochures/' . $vendors['0']['filename'];
header("Content-type: application/pdf");
header('Content-disposition: attachment; filename="' . $fullpath . '"');
Am I doing something wrong that would cause the file to become corrupt? Am I missing a header or two?
Thanks in advance,
Jake
You need to call the following line after sending the header.
readfile($fullpath);
and also adjust in the header like this:
header('Content-disposition: attachment; filename="' . basename($fullpath) . '"');
One thing i am not sure about is the $fullpath .. try to see if the $fullpath you have is correct and you can actually reach the file, this needs to be the full physical path of the file.
I think it would also be a good idea to add the following header as well:
header("Content-Transfer-Encoding: binary");
I had a similar issue a while back. Make sure you don't have any extra whitespace in your script file, either before the "<?php" tag or after the "?>" tag. In my case the last character of my script was "\n" instead of the expected ">".
I had faced the same problem sometime back, following worked for me; put a
while( #ob_end_clean() );
just before header functions:
header("Content-Type: ". $row['p_mime']);
header("Content-Length: ". $row['p_size']);
header("Content-Disposition: inline; filename=".$row["p_name"]);
Content-disposition: attachment/inline has to be set according to cases (1. prompt for download / 2. open in browser)
NOTE: Take care that you are not echoing and value before the header function, and being over cautious will not do any harm, silent out all the function before header function which you think would fail or spawn a warning message prefixing "#" symbol to those lines of php code.
all the best :)
Make sure you exit...
(i'm using a blob)
header("Content-Type: " . $response['content_type'] );
header("Cache-Control: maxage=1");
header("Pragma: public"); //fixes ie bug
echo trim($_data);
exit();
I have a PHP file that generates xls files using the module found at http://pear.php.net/package/Spreadsheet_Excel_Writer/
I can create the sample document just fine and when I open it, it looks fine.
My next step it to turn it into a downloadable link. To do that, I did this:
$mimeType = "application/vnd.ms-excel";
$file_name = "test.xls";
$file_path = "/tmp/".$file_name;
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-Type: application/octet-stream");
header("Content-Type: application/download");
header('Content-Type: application/' . $mimeType);
header('Content-Length: '.$size);
header("Content-Disposition: attachment;filename=$file_name ");
header("Content-Transfer-Encoding: binary ");
// open the file in binary read-only mode
// display the error messages if the file can´t be opened
$file = & fopen($file_path, 'rb');
if ($file) {
// stream the file and exit the script when complete
fpassthru($file);
exit;
} else {
echo $err;
}
When I download the file however, it contains a lot of garbage data both in Excel and OpenOffice. The diff says that then binary file in the /tmp folder and the downloaded file are different from each other. I'm guessing that it has something to do with the headers or with fpassthru but I haven't had much luck with debugging the issue.
Any ideas on what the problem is?
The multiple Content-Type headers are uncessary. You're essentially saying that the file is a muffin and a pizza and a ford taurus all at the same time. All you need is the application/octet-stream version, unless you want to serve up the exact mime type.
As well, is there any reason you're trying to turn the file handle returned by fopen() into a reference?
Try something simpler:
<?php
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment;filename=$file_name");
readfile("/tmp/test.xls");
exit();
?>
and see if that does any better.
Just make sure that you don't send ANYTHING out to the browser BEFORE the actual file content gets send.
It might just be some php 'error' or even 'notice' that Spreadsheet_Excel_Writer is producing and you don't even see. Or it might be a closing '?>' tag thats followed by s simple space or newline.
I had a similar error where the file that was generated inside the web folders were working. However the delivery using header('...') gave me corrupt files. This was due to a single space at the end of one php file after the closing '?>' tag.
I am using the same library and I just discovered that the files in the library itself are creating the whitespace.
Solution: In the following files remove the whitespace at the end of the file, or remove the ?> closing tag at the end.
Files to edit (all files in the Spreadsheet_Excel_Writer package):
Writer.php
Workbook.php
Worksheet.php
PPS.php
Parser.php
OLE.php
Parser.php
File.php
BIFFWriter.php
Validator.php
Root.php
Add the following code at the top of the page where the excel file is generated
ob_clean();
This would clear all the gibberish data.Also check for any echo statements.If echo statements are present, remove them. The data should always present in format specified by excel package.
I've created a custom solution in WordPress that will generate a CSV file to be downloaded by clicking a simple hyperlink, linked directly to this file. Instead of being prompted to download the file to the computer; the CSV opens in the the browser window instead.
FWIW I'm on Media Temple using a vanilla install of WordPress.
Send the proper mime type
header('Content-type: text/csv');
And use the Content-Disposition header to tell it to download: http://www.jtricks.com/bits/content_disposition.html
header('Content-Disposition: attachment; filename="mycssfile.csv"');
You always want to send the proper mime type, otherwise firewalls, anti-virus software and some browsers may have issues with it...
You can use PHP's header() function to change Content-type
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename="myFile.csv"');
The above code will force a prompt to the user for download. where myFile.csv should be replaced with the path to the file you want downloaded.
This works:
$filename = 'export.csv';
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename='.$filename);
Also, I personally do not like links on my sites, I like buttons. If you want a button to do for the export function you can use the code below. I just thought I would post it because it took me a bit to figure out the first time :)
<input type="button" value="Export to CSV" onClick="window.location.href='something.php?action=your_action';"/>
You need to send the browser a MIME type of application/csv so it will offload the responsibility of handling the file to whatever the OS recommends (or user chooses).
In PHP (before any output is sent to the client):
header('Content-type: application/csv');