分享一段WordPress面包屑导航源码

WordPress面包屑导航源码

function wp_breadcrumb()
{
    $delimiter = ' » ';
    $home = '首页';
    $search_result = get_option('op_search_result');
    $posts_tagged = get_option('op_posts_tagged');
    $posted_author = get_option('op_posted_author');
    $error_404 = get_option('op_error_404');
    $page_navi = get_option('op_page_navi');
    $before = '';
    $after = '';
    if (!is_home() && !is_front_page() || is_paged()) {
        global $post;
        $homeLink = home_url();
        echo '<a href="' . $homeLink . '">' . $home . '</a>' . $delimiter . '';
        if (is_category()) {
            global $wp_query;
            $cat_obj = $wp_query->get_queried_object();
            $thisCat = $cat_obj->term_id;
            $thisCat = get_category($thisCat);
            $parentCat = get_category($thisCat->parent);
            if ($thisCat->parent != 0) {
                echo get_category_parents($parentCat, TRUE, '' . $delimiter . '');
            }
            echo $before . single_cat_title('', false) . $after;
        } elseif (is_day()) {
            echo '' . get_the_time('Y') . '年' . get_the_time('m') . '月' . get_the_time('d') . '日发布的内容' . $after . '';
        } elseif (is_month()) {
            echo '' . get_the_time('Y') . '年' . get_the_time('m') . '月发布的内容' . $after . '';
        } elseif (is_year()) {
            echo '' . get_the_time('Y') . '年发布的内容' . $after . '';
        } elseif (is_single() && !is_attachment()) {
            if (get_post_type() != 'post') {
                $post_type = get_post_type_object(get_post_type());
                $slug = $post_type->rewrite;
                echo '<a href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a>' . $delimiter . '';
                echo $before . get_the_title() . $after;
            } else {
                $cat = get_the_category();
                $cat = $cat[0];
                echo get_category_parents($cat, TRUE, '' . $delimiter . '');
                echo $before . get_the_title() . $after;
            }
        } elseif (!is_single() && !is_page() && get_post_type() != 'post' && !is_404()) {
            $post_type = get_post_type_object(get_post_type());
            echo $before . $post_type->labels->singular_name . $after;
        } elseif (is_attachment()) {
            $parent = get_post($post->post_parent);
            $cat = get_the_category($parent->ID);
            $cat = $cat[0];
            echo get_category_parents($cat, TRUE, '' . $delimiter . '');
            echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a>' . $delimiter . '';
            echo $before . get_the_title() . $after;
        } elseif (is_page() && !$post->post_parent) {
            echo $before . get_the_title() . $after;
        } elseif (is_page() && $post->post_parent) {
            $parent_id = $post->post_parent;
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $parent_id = $page->post_parent;
            }
            $breadcrumbs = array_reverse($breadcrumbs);
            foreach ($breadcrumbs as $crumb) {
                echo $crumb . '' . $delimiter . '';
            }
            echo $before . get_the_title() . $after;
        } elseif (is_search()) {
            echo $before . '' . $search_result . '' . get_search_query() . '（搜索结果）' . $after;
        } elseif (is_tag()) {
            echo $before . '' . $posts_tagged . '' . single_tag_title('', false) . '（标签）' . $after;
        } elseif (is_author()) {
            global $author;
            $userdata = get_userdata($author);
            echo $before . '' . $posted_author . '' . $userdata->display_name . '发布的内容' . $after;
        } elseif (is_404()) {
            echo $before . '' . $error_404 . '404错误' . $after;
        }
        if (get_query_var('page')) {
            echo '（第';
            echo get_query_var('page');
            echo '页）';
        }
        if (get_query_var('paged')) {
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo '（第';
            }
            echo __('' . $page_navi . '') . '' . get_query_var('paged');
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo '页）';
            }
        }
    }
} 

WordPress面包屑导航使用方法