im writing a basic script to download csv file based on database information,
in my dashboard/index.php i use GET and switch to include pages
so when i click on the link dashboard.php?link=export.php
i have a table with the all the data , there i have a link that i can download my csv file , my problem is that when i click to export.csv , i have an text output and not download file so i put those code :
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename={$filename}.csv");
header("Pragma: no-cache");
header("Expires: 0");
but always i see the content in text format and with an error
Warning: Cannot modify header information - headers already sent by (output started at /home/*/public_html/dev/dashboard/index.php:78) in /home/*/public_html/dev/dashboard/component/export.php on line 39
so i ask how can i resolve this issue , can i remove the header for the index in the export.php and set a new one also there to download the file or what extacly
maybe i need to change just in the export.php the Content-Type to be text/csv
but is alrady sent text/html .
please help to resolve this
thank you
As you can see, there is something already sent to output (printed) in your index.php file which is including your export.php file.
Make sure you are not printing anything before the headers. In some cases might be a space between the opening <?php tags or something little like that. btw mind that switch inclusion cases you have.
Other way is to try to use header_remove(); before the statements in export.php
Do not add anything before header in my case i was getting record from data base.
If you have function to download csv the add following header at top in the function like:
function exportCsv($date) {
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=data.csv');
.
.
.
.
}
Related
I need to create a PHP page which starts automatically the download a file (I don't want to expose the Download link). I've tried with several examples on the web but all examples will end up with opening the file in the browser with the uncorrect content type.
For example:
<?php
// We'll be outputting a ZIP
header("Content-type: application/zip");
// Use Content-Disposition to force a save dialog.
// The file will be called "downloaded.zip"
header("Content-Disposition: attachment; filename=downloaded.zip");
readfile('downloaded.zip');
?>
When I execute this page, the output on the browser is:
After trying all possible variants of this example my idea is that the problem is with my hosting environment. Which variable should I check and maybe ask to be enabled to my provider ?
Thanks!
Try printing out the following variable using phpinfo(): SERVER["HTTP_ACCEPT_ENCODING"].
My suspect is that you don't have zip allowed- could be something different like "gzip" for example.
Here's the code I used back in the day: header ("Content-Type: application");
header ("Content-Disposition: attachment; filename=\"$file\"");
header ("Content-Length: " . filesize ('./FILES/' . $file));
header ("Cache-Control: no-cache");
header ("Pragma: no-cache");
readfile ('./FILES/' . $file);
Just modify the content-type header ofc.
I have written a script using header function that generates CSV file.Let me explain in detail.
Step 1) I am saving records in mysql.Step 2) I am creating CSV file from saved records from database Step 3) I want to attach that CSV in attachments so that i could send it to different recipents!! I have completed the two steps.But i dont want download functionality in CSV file generation process as i dont want this file available to anyone. My code looks like this:
$file_name = "Register_" . date('l');
$file_name.=".csv";
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=$file_name");
header("Pragma: no-cache");
header("Expires: 0");
print "$header\n$data";
Where do I need to make changes?
just remove all calls to header() and the last print
You could do what you try to by using the ob_buffer functions and 'catching' the generated output. However the whole approach is a little strange:
the header functions have nothing to do with creating emails. They serve the purpose to specify how a browser should handle transferred data. 'Cause this is what you do: you send headers and data. Don't.
Instead: write the csv data into a buffer or file and create an email using one of the available email classes (google...). Then take that crafted email and send it. No header() function required for that.
You can use AddStringAttachment:
$file_name = "Register_" . date('l') . ".csv";
$excelContent = "$header\n$data";
$phpmailer->AddStringAttachment($excelContent, $file_name, 'base64', 'application/vnd.ms-excel');
I've learned how to create CSV files from MySQL data from another StackOverflow question. My problem is, for some reason when I call this code, it tries to save a file called index.php (which is the current page). Inside the index.php file my data from the table is there, separated by commas. I'm guessing I have a small typo somewhere, but after playing with the code I cannot find it. Thanks to anyone who can help.
$result=mysql_query("SELECT * from tbl_email");
if(mysql_num_rows($result)) {
header ("Content-type: application/csv Content-Disposition:\"inline; filename=messages.csv\"");
echo "REF #,Company,Name,Email,Message,Date\n";
while($row = mysql_fetch_row($result)) {
$companyname = mysql_query("SELECT company FROM tbl_users WHERE user_id ='$row[1]'");
$datname = mysql_fetch_array($companyname);
echo"$row[7],$datname[company],$row[2],$row[4],$row[5],$row[6]\n";
}
die();
}
You need multiple header() calls rather than one call which supplies multiple headers on a single line, and I believe the most appropriate mime type for a CSV is text/csv.
header("Content-type: text/csv");
header("Content-Disposition: inline; filename=messages.csv");
And more commonly, we would use Content-Disposition: attachment to force a download.
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=messages.csv");
It should be:
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename="messages.csv"');
Notice that the value for filename is not encased correctly with double quotes. Try to use single quotes in php, this will save you alot of trouble. ;)
Have a look at http://www.techcoil.com/blog/php-codes-to-tell-browsers-to-open-the-download-dialog-box-for-users-to-download-a-file/ to learn more about telling browser to download your file.
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 am creating an xml file on the fly. When a user generates this file I want it to open up a download file dialog with the content that was generated. There is no actual file because it is just generated through php. Any ideas on how to do this?
This is what worked for me. In readfile('newfile.xml'); make sure to give the path of the file correctly. This php page is called from an html page with anchor tag which says - download:
<?php
header('Content-disposition: attachment; filename="newfile.xml"');
header('Content-type: "text/xml"; charset="utf8"');
readfile('newfile.xml');
?>
source: How do I force the browser to download a file to disk instead of playing or displaying it?
Send a content-disposition attachment header.
header('Content-disposition: attachment; filename=advertise.xml');
header ("Content-Type:text/xml");
//output the XML data
echo $xml;
// if you want to directly download then set expires time
header("Expires: 0");