Popshop Pop In Code

<?php
            # Determine the current base URL
            if(!isset($_SERVER['REQUEST_URI'])) {
               $psps_base_url = $_SERVER['PHP_SELF'];
               if (isset($HTTP_SERVER_VARS['QUERY_STRING'])) { $psps_base_url .= $HTTP_SERVER_VARS['QUERY_STRING']; }
            } else {
               $psps_base_url = $_SERVER['REQUEST_URI'];
            }

            $psps_parameters = '';

            foreach ($_REQUEST as $key => $value) {
              if (strpos($key,"psps_") > -1 ) {
                $psps_parameters .= '&'.$key.'='.urlencode($value);
                $psps_base_url = str_replace('&'.$key.'='.urlencode($value), "", $psps_base_url);
                $psps_base_url = str_replace($key.'='.urlencode($value), "", $psps_base_url);
              }
            }

            $psps_parameters .= "&psps_show_search=true";
            $psps_parameters .= "&psps_show_navigation=true";
            $psps_parameters .= "&psps_show_products=true";

            $psps_url = "?psps_base_url=".urlencode($psps_base_url);

            $psps_url="http://shops.popshops.com/shops/php/bwh1u4wom9b4gsaxrcvctxvyl$psps_url$psps_parameters";

            # Include the shop
            if (function_exists('curl_init')) {
            $shop=curl_init();
            curl_setopt($shop,CURLOPT_URL,$psps_url);
            curl_exec($shop);
            curl_close($shop);
              } else {
                readfile($psps_url);
              }
            ?>