title: PHP file download complete event
body: <p>I am creating zip files dynamically which user should download and after download is complete I want to remove the file .I think all JS ways are not safe . So not a secret that php it is a   server side language and this makes me think that in some way there must be away that  between  that client  and my server bytes are no longer transmitted so I can tell  that now the download is complete . IS there a similar way of accomplishing what I described above ? </p>