Notification when download ends

[TonioIncredible]

Hello,

I download a file using $writer->save('php://output'); (after specifying the correct header), and it works well.

But I would like to be able to do more treatment when the download is finished, how can I do? I cannot send another header.
For instance, I need to hide a "wait" animated gif at the end, or to go to a specific URL.

I searched quite a lot and did not find.

Thanks for your suggestions

[MarkBaker]

Consider how you might do this for any file download? Can you do it if, for example, you did something like:

$objInputStream = fopen("/my/textfile.txt", "rb");
$objTempStream = fopen("php://output", "w+b");
stream_copy_to_stream($objInputStream, $objTempStream);

This isn't a PhpSpreadsheet-specific issue, not even a PHP-specific issue, but a general question about the http protocol, and how that works.

The closest to a solution that I can suggest would be to send an additional REFRESH header, that would redirect after the content of the file had been sent.

header('Refresh: 10; URL=http://yoursite.com/thankYouForDownloadingPage.php');

But I make no guarantees about how effective this would be

[TonioIncredible]

Thank you for your reply.
Yes, I imagine it is not a specific PHPSpreadSheet issue, but I imagine many people should face it.
Your first solution implies that the file is stored on the server, which I don't want.

And the header refresh does not work. I am already sending headers:
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header("Content-Disposition: attachment;filename="$fic"");
header('Cache-Control: max-age=0');

[MarkBaker]

The first "solution" isn't a solution, it's a question; how would you do it for other file downloads if they weren't generated by PhpSpreadsheet.

It doesn't matter if you're already sending headers; you can add more headers than those required to tell the browser to accept a spreadsheet file download, so you can send a refresh header as well. I don't know if sending the refresh header will work or not, but try sending it with the Content type and disposition, and the cache control headers, and see what affect it has.

[TonioIncredible]

Sorry, Refresh does not work

[TonioIncredible]

But thanks for your help