I'm using wget in a php script and need to get the name of the file downloaded.

For example, if I try

<?php
  system('/usr/bin/wget -q --directory-prefix="./downloads/" http://www.google.com/');
?>

I will get a file called index.html in the downloads directory. The page will not always be google though, so I need to find out the name of the file that was downloaded.

I'd like to have something like this:

<?php
  //Does not work:
  $filename = system('/usr/bin/wget -q --directory-prefix="./downloads/" http://www.google.com/');
  //$filename should contain "index.html"
?>