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2020年03月03日发布,共写了1464个字,约4分钟读完

WordPress面包屑导航实现(非插件)

据说,面包屑导航有利于SEO,所以在开发本站主题的时候也加入了面包屑导航功能。

请将如下函数放入主题的function.php中:

//面包屑功能
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>';  
    
        if ( is_category() )  
        {  
            $catTitle = single_cat_title( "", false );  
            $cat = get_cat_ID( $catTitle );  
            echo " &raquo; ". get_category_parents( $cat, TRUE, " &raquo; " ) ."</li>";  
        }  
        elseif ( is_archive() && !is_category() )  
        {  
            echo " &raquo; Archives</li>";  
        }  
        elseif ( is_search() ) {  
    
            echo " &raquo; Search Results</li>";  
        }  
        elseif ( is_404() )  
        {  
            echo " &raquo; 404 Not Found</li>";  
        }  
        elseif ( is_single() )  
        {  
            $category = get_the_category();  
            $category_id = get_cat_ID( $category[0]->cat_name );  
    
            echo ' &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 " &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 ' &raquo; <a href="'. get_permalink($ancestor) .'">'. strip_tags( apply_filters( 'single_post_title', get_the_title( $ancestor ) ) ) .'</a></li>';  
                    } else {  
                        echo ' &raquo; '. strip_tags( apply_filters( 'single_post_title', get_the_title( $ancestor ) ) ) .'</li>';  
                    }  
                }  
            }  
        }  
    
        // End the UL  
        echo "</ul>";  
    }  
}  

调用方法:

找到主题的文章模板single.php文件,在while ( have_posts() ) :前面加上如下代码即可:

if (function_exists('get_breadcrumbs')){get_breadcrumbs(); }

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