How can I delete a user uploaded file after the client closes the page?

Question

PHP

Testing locally on Open Panel Server: Apache 2.4 + PHP 7.0.
A POST request is generated with a file. The file is uploaded to the server and accessed by JS. Access is needed for the entire time the page is open.
I tried to figure out the sessions and register my handlers when closing - it didn’t work out. The code, of course, was removed in order to at least somehow work.

Answer 1

1. Let's say once every 5 minutes you send an AJAX request to the server.
   
2. You remember the last time of this request (database, file, etc.)
   
3. For example, you check by cron, if the request did not come for more than 5 minutes, then you can delete the file
   

But if for some reason the connection with the user breaks, the file will be deleted despite the fact that the user's tab is open. For example, if he puts the computer in sleep / air mode.

Answer 2

I would make a cron file that will start at night and delete files uploaded, for example, more than a day ago.