面包屑导航对于一个网站SEO来说还是挺重要的，可以使用以下代码来给自己的主题添加面包屑，将以下代码加入到主题的functions.php里：
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function MBThemes_breadcrumbs() { /* === OPTIONS === */ $text['home'] = '首页'; $text['category'] = '%s'; $text['search'] = '搜索结果：%s'; $text['tag'] = '标签：%s'; $text['author'] = '作者：%s'; $text['404'] = '404'; $text['page'] = '%s'; $text['cpage'] = '%s'; $wrap_before = '<div class="breadcrumbs">'; $wrap_after = '</div>'; $sep = '>'; $sep_before = '<span class="sep">'; $sep_after = '</span>'; $show_home_link = 1; $show_on_home = 0; $show_current = 1; $before = '<span class="current">'; $after = '</span>'; /* === END OF OPTIONS === */ global $post; $home_link = home_url('/'); $link_before = '<span itemscope itemtype="http://data-vocabulary.org/Breadcrumb">'; $link_after = '</span>'; $link_attr = ' itemprop="url"'; $link_in_before = '<span itemprop="title">'; $link_in_after = '</span>'; $link = $link_before . '<a href="%1$s"' . $link_attr . '>' . $link_in_before . '%2$s' . $link_in_after . '</a>' . $link_after; $frontpage_id = get_option('page_on_front'); $parent_id = $post->post_parent; $sep = ' ' . $sep_before . $sep . $sep_after . ' '; if (is_home() || is_front_page()) { if ($show_on_home) echo $wrap_before . '<a href="' . $home_link . '">' . $text['home'] . '</a>' . $wrap_after; } else { echo $wrap_before; if ($show_home_link) echo sprintf($link, $home_link, $text['home']); if ( is_category() ) { $cat = get_category(get_query_var('cat'), false); if ($cat->parent != 0) { $cats = get_category_parents($cat->parent, TRUE, $sep); $cats = preg_replace("#^(.+)$sep$#", "$1", $cats); $cats = preg_replace('#<a([^>]+)>([^<]+)</a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats); if ($show_home_link) echo $sep; echo $cats; } if ( get_query_var('paged') ) { $cat = $cat->cat_ID; echo $sep . sprintf($link, get_category_link($cat), get_cat_name($cat)) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after; } else { if ($show_current) echo $sep . $before . sprintf($text['category'], single_cat_title('', false)) . $after; } } elseif ( is_search() ) { if (have_posts()) { if ($show_home_link && $show_current) echo $sep; if ($show_current) echo $before . sprintf($text['search'], get_search_query()) . $after; } else { if ($show_home_link) echo $sep; echo $before . sprintf($text['search'], get_search_query()) . $after; } } elseif ( is_day() ) { if ($show_home_link) echo $sep; echo sprintf($link, get_year_link(get_the_time('Y')), get_the_time('Y')) . $sep; echo sprintf($link, get_month_link(get_the_time('Y'), get_the_time('m')), get_the_time('F')); if ($show_current) echo $sep . $before . get_the_time('d') . $after; } elseif ( is_month() ) { if ($show_home_link) echo $sep; echo sprintf($link, get_year_link(get_the_time('Y')), get_the_time('Y')); if ($show_current) echo $sep . $before . get_the_time('F') . $after; } elseif ( is_year() ) { if ($show_home_link && $show_current) echo $sep; if ($show_current) echo $before . get_the_time('Y') . $after; } elseif ( is_single() && !is_attachment() ) { if ($show_home_link) echo $sep; if ( get_post_type() != 'post' ) { $post_type = get_post_type_object(get_post_type()); $slug = $post_type->rewrite; printf($link, $home_link . '/' . $slug['slug'] . '/', $post_type->labels->singular_name); if ($show_current) echo $sep . $before . get_the_title() . $after; } else { $cat = get_the_category(); $cat = $cat[0]; $cats = get_category_parents($cat, TRUE, $sep); if (!$show_current || get_query_var('cpage')) $cats = preg_replace("#^(.+)$sep$#", "$1", $cats); $cats = preg_replace('#<a([^>]+)>([^<]+)</a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats); echo $cats; if ( get_query_var('cpage') ) { echo $sep . sprintf($link, get_permalink(), get_the_title()) . $sep . $before . sprintf($text['cpage'], get_query_var('cpage')) . $after; } else { if ($show_current) echo $before . get_the_title() . $after; } } // custom post type } elseif ( !is_single() && !is_page() && get_post_type() != 'post' && !is_404() ) { $post_type = get_post_type_object(get_post_type()); if ( get_query_var('paged') ) { echo $sep . sprintf($link, get_post_type_archive_link($post_type->name), $post_type->label) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after; } else { if ($show_current) echo $sep . $before . $post_type->label . $after; } } elseif ( is_attachment() ) { if ($show_home_link) echo $sep; $parent = get_post($parent_id); $cat = get_the_category($parent->ID); $cat = $cat[0]; if ($cat) { $cats = get_category_parents($cat, TRUE, $sep); $cats = preg_replace('#<a([^>]+)>([^<]+)</a>#', $link_before . '<a$1' . $link_attr .'>' . $link_in_before . '$2' . $link_in_after .'</a>' . $link_after, $cats); echo $cats; } printf($link, get_permalink($parent), $parent->post_title); if ($show_current) echo $sep . $before . get_the_title() . $after; } elseif ( is_page() && !$parent_id ) { if ($show_current) echo $sep . $before . get_the_title() . $after; } elseif ( is_page() && $parent_id ) { if ($show_home_link) echo $sep; if ($parent_id != $frontpage_id) { $breadcrumbs = array(); while ($parent_id) { $page = get_page($parent_id); if ($parent_id != $frontpage_id) { $breadcrumbs[] = sprintf($link, get_permalink($page->ID), get_the_title($page->ID)); } $parent_id = $page->post_parent; } $breadcrumbs = array_reverse($breadcrumbs); for ($i = 0; $i < count($breadcrumbs); $i++) { echo $breadcrumbs[$i]; if ($i != count($breadcrumbs)-1) echo $sep; } } if ($show_current) echo $sep . $before . get_the_title() . $after; } elseif ( is_tag() ) { if ( get_query_var('paged') ) { $tag_id = get_queried_object_id(); $tag = get_tag($tag_id); echo $sep . sprintf($link, get_tag_link($tag_id), $tag->name) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after; } else { if ($show_current) echo $sep . $before . sprintf($text['tag'], single_tag_title('', false)) . $after; } } elseif ( is_author() ) { global $author; $author = get_userdata($author); if ( get_query_var('paged') ) { if ($show_home_link) echo $sep; echo sprintf($link, get_author_posts_url($author->ID), $author->display_name) . $sep . $before . sprintf($text['page'], get_query_var('paged')) . $after; } else { if ($show_home_link && $show_current) echo $sep; if ($show_current) echo $before . sprintf($text['author'], $author->display_name) . $after; } } elseif ( is_404() ) { if ($show_home_link && $show_current) echo $sep; if ($show_current) echo $before . $text['404'] . $after; } elseif ( has_post_format() && !is_singular() ) { if ($show_home_link) echo $sep; echo get_post_format_string( get_post_format() ); } echo $wrap_after; } } |
然后在需要显示面包屑的地方加上以下代码：
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<?php if (function_exists('MBThemes_breadcrumbs')) MBThemes_breadcrumbs(); ?> |
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