How to change the name when uploading a document?

Question

PHP

I have files on the site with names in the form of billebirds, those
aasdasdasdsadasdasd.txt
How to make it so that when a person presses the download button, this name on the server would remain as it is, but a file like example.txt would already be downloaded from him ?
I found a way out only to duplicate the file on the server with a name change, but this is not a good idea

Answer 1

Content-Disposition: attachment; filename="filename.ext"