wordpress添加面包屑导航

wordpress添加面包屑导航:大家都指导面包屑导航是对SEO很友好,那么不使用任何插件,如何添加面包屑导航呢,风酷seo告诉你可以将其添加到主题functions.php中,手动实现,代码如下:

wordpress添加面包屑导航

/* * BREADCRUMBS *************************************************************/function get_hansel_and_gretel_breadcrumbs(){ // Set variables for later use $home_link = home_url('/'); $home_text = __( 'Home' ); $link_before = '<span typeof="v:Breadcrumb">'; $link_after = '</span>'; $link_attr = ' rel="v:url" property="v:title"'; $link = $link_before . '<a' . $link_attr . ' href="%1$s">%2$s</a>' . $link_after; $delimiter = ' <i class="fa fa-angle-right"></i> '; // Delimiter between crumbs $before = '<span class="current">'; // Tag before the current crumb $after = '</span>'; // Tag after the current crumb $page_addon = ''; // Adds the page number if the query is paged $breadcrumb_trail = ''; $category_links = '';/** * Set our own $wp_the_query variable. Do not use the global variable version due to * reliability */ $wp_the_query = $GLOBALS['wp_the_query']; $queried_object = $wp_the_query->get_queried_object();// Handle single post requests which includes single pages, posts and attatchments if ( is_singular() ) { /** * Set our own $post variable. Do not use the global variable version due to * reliability. We will set $post_object variable to $GLOBALS['wp_the_query'] */ $post_object = sanitize_post( $queried_object );// Set variables $title = apply_filters( 'the_title', $post_object->post_title ); $parent = $post_object->post_parent; $post_type = $post_object->post_type; $post_id = $post_object->ID; $post_link = $before . $title . $after; $parent_string = ''; $post_type_link = '';if ( 'post' === $post_type ) { // Get the post categories $categories = get_the_category( $post_id ); if ( $categories ) { // Lets grab the first category $category = $categories[0];$category_links = get_category_parents( $category, true, $delimiter ); $category_links = str_replace( '<a', $link_before . '<a' . $link_attr, $category_links ); $category_links = str_replace( '</a>', '</a>' . $link_after, $category_links ); } }if ( !in_array( $post_type, ['post', 'page', 'attachment'] ) ) { $post_type_object = get_post_type_object( $post_type ); $archive_link = esc_url( get_post_type_archive_link( $post_type ) );$post_type_link = sprintf( $link, $archive_link, $post_type_object->labels->singular_name ); }// Get post parents if $parent !== 0 if ( 0 !== $parent ) { $parent_links = []; while ( $parent ) { $post_parent = get_post( $parent );$parent_links[] = sprintf( $link, esc_url( get_permalink( $post_parent->ID ) ), get_the_title( $post_parent->ID ) );$parent = $post_parent->post_parent; }$parent_links = array_reverse( $parent_links );$parent_string = implode( $delimiter, $parent_links ); }// Lets build the breadcrumb trail if ( $parent_string ) { $breadcrumb_trail = $parent_string . $delimiter . $post_link; } else { $breadcrumb_trail = $post_link; }if ( $post_type_link ) $breadcrumb_trail = $post_type_link . $delimiter . $breadcrumb_trail;if ( $category_links ) $breadcrumb_trail = $category_links . $breadcrumb_trail; }// Handle archives which includes category-, tag-, taxonomy-, date-, custom post type archives and author archives if( is_archive() ) { if ( is_category() || is_tag() || is_tax() ) { // Set the variables for this section $term_object = get_term( $queried_object ); $taxonomy = $term_object->taxonomy; $term_id = $term_object->term_id; $term_name = $term_object->name; $term_parent = $term_object->parent; $taxonomy_object = get_taxonomy( $taxonomy ); $current_term_link = $before . $taxonomy_object->labels->singular_name . ': ' . $term_name . $after; $parent_term_string = '';if ( 0 !== $term_parent ) { // Get all the current term ancestors $parent_term_links = []; while ( $term_parent ) { $term = get_term( $term_parent, $taxonomy );$parent_term_links[] = sprintf( $link, esc_url( get_term_link( $term ) ), $term->name );$term_parent = $term->parent; }$parent_term_links = array_reverse( $parent_term_links ); $parent_term_string = implode( $delimiter, $parent_term_links ); }if ( $parent_term_string ) { $breadcrumb_trail = $parent_term_string . $delimiter . $current_term_link; } else { $breadcrumb_trail = $current_term_link; }} elseif ( is_author() ) {$breadcrumb_trail = __( 'Author archive for ') . $before . $queried_object->data->display_name . $after;} elseif ( is_date() ) { // Set default variables $year = $wp_the_query->query_vars['year']; $monthnum = $wp_the_query->query_vars['monthnum']; $day = $wp_the_query->query_vars['day'];// Get the month name if $monthnum has a value if ( $monthnum ) { $date_time = DateTime::createFromFormat( '!m', $monthnum ); $month_name = $date_time->format( 'F' ); }if ( is_year() ) {$breadcrumb_trail = $before . $year . $after;} elseif( is_month() ) {$year_link = sprintf( $link, esc_url( get_year_link( $year ) ), $year );$breadcrumb_trail = $year_link . $delimiter . $before . $month_name . $after;} elseif( is_day() ) {$year_link = sprintf( $link, esc_url( get_year_link( $year ) ), $year ); $month_link = sprintf( $link, esc_url( get_month_link( $year, $monthnum ) ), $month_name );$breadcrumb_trail = $year_link . $delimiter . $month_link . $delimiter . $before . $day . $after; }} elseif ( is_post_type_archive() ) {$post_type = $wp_the_query->query_vars['post_type']; $post_type_object = get_post_type_object( $post_type );$breadcrumb_trail = $before . $post_type_object->labels->singular_name . $after;} }// Handle the search page if ( is_search() ) { $breadcrumb_trail = __( 'Search query for: ' ) . $before . get_search_query() . $after; }// Handle 404's if ( is_404() ) { $breadcrumb_trail = $before . __( 'Error 404' ) . $after; }// Handle paged pages if ( is_paged() ) { $current_page = get_query_var( 'paged' ) ? get_query_var( 'paged' ) : get_query_var( 'page' ); $page_addon = $before . sprintf( __( ' ( Page %s )' ), number_format_i18n( $current_page ) ) . $after; }$breadcrumb_output_link = ''; $breadcrumb_output_link .= '<div class="breadcrumb">'; if ( is_home() || is_front_page() ) { // Do not show breadcrumbs on page one of home and frontpage if ( is_paged() ) { $breadcrumb_output_link .= '<a href="' . $home_link . '">' . $home_text . '</a>'; $breadcrumb_output_link .= $page_addon; } } else { $breadcrumb_output_link .= '<a href="' . $home_link . '" rel="v:url" property="v:title">' . $home_text . '</a>'; $breadcrumb_output_link .= $delimiter; $breadcrumb_output_link .= $breadcrumb_trail; $breadcrumb_output_link .= $page_addon; } $breadcrumb_output_link .= '</div><!-- .breadcrumbs -->';return $breadcrumb_output_link;}

然后把下面的代码插入你想要加入面包屑导航的地方,如single.php, archive.php, tags.php等等

  <?php echo get_hansel_and_gretel_breadcrumbs(); ?>

 

面包屑导航的css样式

/* * BREADCRUMBS **************************************************/#breadcrumbs { list-style: none; margin: 10px 40px; overflow: hidden;}#breadcrumbs li { float: left; margin-right: 15px; font-size: .8em;}#breadcrumbs .separator { font-weight: 700; font-size: 20px; color: #999;}

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