wordpress 不使用插件 如何制作面包屑导航

wordpress 不用插件  纯代码 制作 面包屑导航

首页在在wordpress博客当前主题的functions.php文件（没有就创建一个）中添加以下代码

//面包屑导航
function get_breadcrumbs()
{
    global $wp_query; 
    if ( !is_home() ){ 
        // Start the UL
        echo '<ul class="breadcrumbs">';
        // Add the Home link
        echo '<li><a href="'. get_settings('home') .'">'. get_bloginfo('name') .'</a></li>'; 
        if ( is_category() )
        {
            $catTitle = single_cat_title( "", false );
            $cat = get_cat_ID( $catTitle );
            echo "<li> &raquo; ". get_category_parents( $cat, TRUE, " &raquo; " ) ."</li>";
        }
        elseif ( is_archive() && !is_category() )
        {
            echo "<li> &raquo; Archives</li>";
        }
        elseif ( is_search() ) { 
            echo "<li> &raquo; Search Results</li>";
        }
        elseif ( is_404() )
        {
            echo "<li> &raquo; 404 Not Found</li>";
        }
        elseif ( is_single() )
        {
            $category = get_the_category();
            $category_id = get_cat_ID( $category[0]->cat_name ); 
            echo '<li> &raquo; '. get_category_parents( $category_id, TRUE, " &raquo; " );
            echo the_title('','', FALSE) ."</li>";
        }
        elseif ( is_page() )
        {
            $post = $wp_query->get_queried_object(); 
            if ( $post->post_parent == 0 ){ 
                echo "<li> &raquo; ".the_title('','', FALSE)."</li>"; 
            } else {
                $title = the_title('','', FALSE);
                $ancestors = array_reverse( get_post_ancestors( $post->ID ) );
                array_push($ancestors, $post->ID); 
                foreach ( $ancestors as $ancestor ){
                    if( $ancestor != end($ancestors) ){
                        echo '<li> &raquo; <a href="'. get_permalink($ancestor) .'">'. strip_tags( apply_filters( 'single_post_title', get_the_title( $ancestor ) ) ) .'</a></li>';
                    } else {
                        echo '<li> &raquo; '. strip_tags( apply_filters( 'single_post_title', get_the_title( $ancestor ) ) ) .'</li>';
                    }
                }
            }
        } 
        // End the UL
        echo "</ul>";
    }
}

最后到模板里面加上调用代码

<?php
if (function_exists('get_breadcrumbs')){
    get_breadcrumbs();
}
 ?>