<?php
    $url = "http://e...content-available-to-author-only...e.com/conversion/?param1=dhkw121?param2=dhja143&uuid=jsbdwbjb-fwjdbw-wdvvw-wj";
    preg_match_all("/param1=(\w+).*?param2=(\w+)/", $url, $results);
    print_r($results);
?>