Online PHP editor | refs for SLYo9

<?php $directoryURI = $_SERVER['REQUEST_URI']; $path = parse_url($directoryURI, PHP_URL_PATH); $components = explode('/', $path); $first_part = $components[1]; ?> <ul id="mainnav"> <li class="<?php if ($first_part=="") {echo "active"; } ?>"><a href="#">Home</a></li> <li class="<?php if ($first_part=="tutorials") {echo "active"; } ?>"><a href="#">Tutorials</a></li> <li class="<?php if ($first_part=="resources") {echo "active"; } ?>"><a href="#">Resources</a></li> <li class="<?php if ($first_part=="library") {echo "active"; } ?>"><a href="#">Library</a></li> <li class="<?php if ($first_part=="our-projects") {echo "active"; } ?>"><a href="#">Our Projects</a></li> <li class="<?php if ($first_part=="community") {echo "active"; } ?>"><a href="#">Community</a></li> </ul>