How to download generated files?

Question

PHP

• I'm using https://github.com/tcz/PHPTracker ( http://php-tracker.org), I've set everything up, the daemon is working, but I can't figure out how to download the generated torrent files to other people?
  When I go to site.com/example_torrent_creator.php I get a torrent file created from a regular image on the server; after that , its info_hash and so on are written to the database (using example_announce.php ), but then a reasonable question arises - what's next? On the server, I have nothing left, only in the database. How can other people download my file?
  Although it seems to me that such a function is not provided in PHPTracker .
  
• In general, I need the following - a person uploads a .torrent file to the server, I get its info hash, etc., and then a link to download this file is displayed to me (the user). How can this be implemented?
  And explain what these announce.php are for ? As I understand it, they "look" for information about the torrent, but is it possible to make a person upload a file to my server, and then announce and find out everything that is needed.
  I will be very grateful.