$on_this_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; 
foreach ($city_array as $sandwich) {
    if (strpos($on_this_link, $sandwich) == true) {
        $sandwich = trim($sandwich, '/');
        $city     = $sandwich;
        if ($city == 'newyork') {
            foreach ($category_array as $double_sandwich) {
                if (strpos($on_this_link, $double_sandwich) == true) {
                    $double_sandwich = trim($double_sandwich, '/');
                    $category_is = $double_sandwich;
                    Loader::model('page_list');
                    $nh = Loader::helper('navigation');                  
                    $pl = new PageList();
                    $pl->filterByAttribute('city', '%' . $city . '%', 'like');
                    $pl->filterByAttribute('category','%'.$category_is.'%','like');                 
                    $pl->sortByDisplayOrder();
                    $pagelist = $pl->get();
                     foreach ($pagelist as $p) {
                        echo '<li> <a href="' . $nh->getLinkToCollection($p) . '">' . htmlspecialchars($p->getCollectionName()) . '</a> </li>';
                         ?>
 
                    }
                }
            }
}