<?php

function st_navigation_breadcrumbs()
{
    $breadcrumbs = stNavigationBreadcrumbs::getInstance();

    $content = '';

    $last = count($breadcrumbs) - 1;

    foreach ($breadcrumbs->getBreadcrumbs() as $index => $breadcrumb)
    {
        $title = strip_tags($breadcrumb->getTitle());

        if ($breadcrumb->isLink() && $index < $last)
        {
            $item = content_tag('a', $title, array('href' => $breadcrumb->getUrl()));
        }
        else
        {
            $item = content_tag('span', $title);
        }

        $content .= content_tag('li', $item);
    }

    return $content ? content_tag('ul', $content, array('class' => 'st-navigation-breadcrumbs')) : '';
}