fetchXML

<?

    function fetchXML($params = false) {

        // Are we overriding the default XML path calculation?
        if ($params !== false) {

            $address = $params;
        }
        // No? Didn't think so
        else {

            $address = substr($_SERVER['SCRIPT_NAME'], +1, -4);

            if (isset($_GET['category'])) {

                $address .= "/" . $_GET['category'];

                if (isset($_GET['subcategory'])) {

                    $address .= "/" . $_GET['subcategory'];
                }

                if (isset($_GET['page'])) {

                    $address .= "/" . $_GET['page'];
                }
                else {

                    $address .= "/" . (isset($_GET['subcategory']) ? $_GET['subcategory'] : $_GET['category']) . "_index";
                }
            }
            else if (isset($_GET['page'])) {

                $address .= "/" . $_GET['page'];
            }
            else {

                $address .= "/" . $address . "_index";
            }
        }

        $address = "xml/" . $address . ".xml";

        //echo $address;        //testing porpoises

        if (file_exists($address)) {

            $output = simplexml_load_file($address) or die("Error loading XML");
        }
        else {

            $output = false;
        }

        return $output;
    }