In php Instead of downloading csv file it gets open in the browser

Question

I'm trying to download a CSV file through the browser. The script is partially working, because so far I managed to display the CSV on screen, but the download is not starting.

Here is what i tried so far:

if(isset($currency)) {
    header("Content-Type: application/csv");
    header("Content-Disposition: attachment;Filename=Pricelogs.csv");
    ob_clean();
    $filename = "/tmp/".uniqid().".csv";
    exportCSVFile($filename, $currency, $country, $provider);
    readfile($filename);
    //unlink("'".$filename."'");
} else {
    echo "ERR_USERNAME_PASSWORD";
    exit();
}

I had already read all questions of this type from FAQ & also tried but it gets open on browser only,instead of downloading.
I had also used header with single quotes. I also tried header("Content-Type: text/csv"); Also:

    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: private",false); // required for certain browsers 
    header("Content-Type: application/force-download");
    header("Content-Disposition: attachment; filename=\"".$filename."\";" );
    header("Content-Transfer-Encoding: binary");

Answer 1

PUT your CSV file URL, it will display in browser in place of force browser to download. You can open it in iframe in your site.

http://docs.google.com/viewer?embedded=true&url=www.yoursite.com/filename.csv

Answer 2

I usually just do:

header('Content-type: text/csv');
header("Content-Disposition: attachment; filename=my_csv_filename.csv");

// print CSV lines here

exit();

Answer 3

I can tell you this combination is working for me:

$bom = chr(0xEF) . chr(0xBB) . chr(0xBF);
header("Content-type: application/csv; charset=UTF-8");
header("Content-Disposition: attachment; filename=$filename.csv");
header("Pragma: no-cache");
header("Expires: 0");
print $bom . $data;
exit;

If I were you, I would first test this plainly (outside of all your buffering), first see that you manage to make this work, and only then test it in your specific set up.

Answer 4

You might try this.

header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename=\"$filename.csv\";" );

print $content;