Limiting Parallel/Simultaneous Downloads - How to know if download was cancelled?

Question

I have a simple file upload service, written out in PHP, which also includes a script that controls download speeds by sending limited-sized packets when a user requests a d

Answer 1

file = $file;
  }

  public function send() {
    // -> note in DB you've started
    readfile($this->file);
  }

  public function __destruct() {
    // download is done, either completed or aborted
    $aborted = connection_aborted();
    // -> note in DB
  }
}

$dl = new DownloadObserver("/tmp/whatever");
$dl->send();

should work just fine. No need for a shutdown_function or any funky self-built connection observation.