Active or inactive menu using php

<?php
$basename = basename($_SERVER['REQUEST_URI']);


?>
<div class="navigation">
                <ul>
<li><a href="index.php" class="<? if($basename=="index.php"){echo "active";}?>">Home</a></li>
<li><a href="feature.php" class="<? if($basename=="feature.php"){echo "active";}?>">Features</a></li>
<li><a href="partnership.php" class="<? if($basename=="partnership.php"){echo "active";}?>">Partnerships</a></li>
<li style="width:154px;"><a href="faq.php" class="<? if($basename=="faq.php"){echo "active";}?>">FAQ's</a></li>
 <li><a href="termservice.php" class="<? if($basename=="termservice.php"){echo "active";}?>">Terms of Service</a></li>
<li style="border-right:none; width:155px;"><a href="contact.php" class="<? if($basename=="contact.php"){echo "active";}?>">Contact Us</a></li>
                </ul>
            </div>