WordPress面包屑导航代码

转载分享两段WordPress面包屑导航代码，支持自定义帖子类型、自定义分类

WordPress面包屑导航代码

将代码添加到当前主题函数模板functions.php中：

/**
 * WordPress Breadcrumbs
 */
function tsh_wp_custom_breadcrumbs() {

    $separator              = '/';
    $breadcrumbs_id         = 'tsh_breadcrumbs';
    $breadcrumbs_class      = 'tsh_breadcrumbs';
    $home_title             = esc_html__('Home', 'your-domain');

    // Add here you custom post taxonomies
    $tsh_custom_taxonomy    = 'product_cat';

    global $post,$wp_query;
       
    // Hide from front page
    if ( !is_front_page() ) {
       
        echo '<ul id="' . $breadcrumbs_id . '" class="' . $breadcrumbs_class . '">';
           
        // Home
        echo '<li class="item-home"><a class="bread-link bread-home" href="' . get_home_url() . '" title="' . $home_title . '">' . $home_title . '</a></li>';
        echo '<li class="separator separator-home"> ' . $separator . ' </li>';
           
        if ( is_archive() && !is_tax() && !is_category() && !is_tag() ) {
              
            echo '<li class="item-current item-archive"><strong class="bread-current bread-archive">' . post_type_archive_title('', false) . '</strong></li>';
              
        } else if ( is_archive() && is_tax() && !is_category() && !is_tag() ) {
              
            // For Custom post type
            $post_type = get_post_type();
              
            // Custom post type name and link
            if($post_type != 'post') {
                  
                $post_type_object = get_post_type_object($post_type);
                $post_type_archive = get_post_type_archive_link($post_type);
              
                echo '<li class="item-cat item-custom-post-type-' . $post_type . '"><a class="bread-cat bread-custom-post-type-' . $post_type . '" href="' . $post_type_archive . '" title="' . $post_type_object->labels->name . '">' . $post_type_object->labels->name . '</a></li>';
                echo '<li class="separator"> ' . $separator . ' </li>';
              
            }
              
            $custom_tax_name = get_queried_object()->name;
            echo '<li class="item-current item-archive"><strong class="bread-current bread-archive">' . $custom_tax_name . '</strong></li>';
              
        } else if ( is_single() ) {
              
            $post_type = get_post_type();

            if($post_type != 'post') {
                  
                $post_type_object = get_post_type_object($post_type);
                $post_type_archive = get_post_type_archive_link($post_type);
              
                echo '<li class="item-cat item-custom-post-type-' . $post_type . '"><a class="bread-cat bread-custom-post-type-' . $post_type . '" href="' . $post_type_archive . '" title="' . $post_type_object->labels->name . '">' . $post_type_object->labels->name . '</a></li>';
                echo '<li class="separator"> ' . $separator . ' </li>';
              
            }
              
            // Get post category
            $category = get_the_category();
             
            if(!empty($category)) {
              
                // Last category post is in
                $last_category = $category[count($category) - 1];
                  
                // Parent any categories and create array
                $get_cat_parents = rtrim(get_category_parents($last_category->term_id, true, ','),',');
                $cat_parents = explode(',',$get_cat_parents);
                  
                // Loop through parent categories and store in variable $cat_display
                $cat_display = '';
                foreach($cat_parents as $parents) {
                    $cat_display .= '<li class="item-cat">'.$parents.'</li>';
                    $cat_display .= '<li class="separator"> ' . $separator . ' </li>';
                }
             
            }

            $taxonomy_exists = taxonomy_exists($tsh_custom_taxonomy);
            if(empty($last_category) && !empty($tsh_custom_taxonomy) && $taxonomy_exists) {
                   
                $taxonomy_terms = get_the_terms( $post->ID, $tsh_custom_taxonomy );
                $cat_id         = $taxonomy_terms[0]->term_id;
                $cat_nicename   = $taxonomy_terms[0]->slug;
                $cat_link       = get_term_link($taxonomy_terms[0]->term_id, $tsh_custom_taxonomy);
                $cat_name       = $taxonomy_terms[0]->name;
               
            }
              
            // If the post is in a category
            if(!empty($last_category)) {
                echo $cat_display;
                echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>';
                  
            // Post is in a custom taxonomy
            } else if(!empty($cat_id)) {
                  
                echo '<li class="item-cat item-cat-' . $cat_id . ' item-cat-' . $cat_nicename . '"><a class="bread-cat bread-cat-' . $cat_id . ' bread-cat-' . $cat_nicename . '" href="' . $cat_link . '" title="' . $cat_name . '">' . $cat_name . '</a></li>';
                echo '<li class="separator"> ' . $separator . ' </li>';
                echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>';
              
            } else {
                  
                echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>';
                  
            }
              
        } else if ( is_category() ) {
               
            // Category page
            echo '<li class="item-current item-cat"><strong class="bread-current bread-cat">' . single_cat_title('', false) . '</strong></li>';
               
        } else if ( is_page() ) {
               
            // Standard page
            if( $post->post_parent ){
                   
                // Get parents 
                $anc = get_post_ancestors( $post->ID );
                   
                // Get parents order
                $anc = array_reverse($anc);
                   
                // Parent pages
                if ( !isset( $parents ) ) $parents = null;
                foreach ( $anc as $ancestor ) {
                    $parents .= '<li class="item-parent item-parent-' . $ancestor . '"><a class="bread-parent bread-parent-' . $ancestor . '" href="' . get_permalink($ancestor) . '" title="' . get_the_title($ancestor) . '">' . get_the_title($ancestor) . '</a></li>';
                    $parents .= '<li class="separator separator-' . $ancestor . '"> ' . $separator . ' </li>';
                }
                   
                // Render parent pages
                echo $parents;
                   
                // Active page
                echo '<li class="item-current item-' . $post->ID . '"><strong title="' . get_the_title() . '"> ' . get_the_title() . '</strong></li>';
                   
            } else {
                   
                // Just display active page if not parents pages
                echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '"> ' . get_the_title() . '</strong></li>';
                   
            }
               
        } else if ( is_tag() ) { // Tag page
               
            // Tag information
            $term_id        = get_query_var('tag_id');
            $taxonomy       = 'post_tag';
            $args           = 'include=' . $term_id;
            $terms          = get_terms( $taxonomy, $args );
            $get_term_id    = $terms[0]->term_id;
            $get_term_slug  = $terms[0]->slug;
            $get_term_name  = $terms[0]->name;
               
            // Return tag name
            echo '<li class="item-current item-tag-' . $get_term_id . ' item-tag-' . $get_term_slug . '"><strong class="bread-current bread-tag-' . $get_term_id . ' bread-tag-' . $get_term_slug . '">' . $get_term_name . '</strong></li>';
           
        } elseif ( is_day() ) { // Day archive page
               
            // Year link
            echo '<li class="item-year item-year-' . get_the_time('Y') . '"><a class="bread-year bread-year-' . get_the_time('Y') . '" href="' . get_year_link( get_the_time('Y') ) . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</a></li>';
            echo '<li class="separator separator-' . get_the_time('Y') . '"> ' . $separator . ' </li>';
               
            // Month link
            echo '<li class="item-month item-month-' . get_the_time('m') . '"><a class="bread-month bread-month-' . get_the_time('m') . '" href="' . get_month_link( get_the_time('Y'), get_the_time('m') ) . '" title="' . get_the_time('M') . '">' . get_the_time('M') . ' Archives</a></li>';
            echo '<li class="separator separator-' . get_the_time('m') . '"> ' . $separator . ' </li>';
               
            // Day display
            echo '<li class="item-current item-' . get_the_time('j') . '"><strong class="bread-current bread-' . get_the_time('j') . '"> ' . get_the_time('jS') . ' ' . get_the_time('M') . ' Archives</strong></li>';
               
        } else if ( is_month() ) { // Month Archive
               
            // Year link
            echo '<li class="item-year item-year-' . get_the_time('Y') . '"><a class="bread-year bread-year-' . get_the_time('Y') . '" href="' . get_year_link( get_the_time('Y') ) . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</a></li>';
            echo '<li class="separator separator-' . get_the_time('Y') . '"> ' . $separator . ' </li>';
               
            // Month display
            echo '<li class="item-month item-month-' . get_the_time('m') . '"><strong class="bread-month bread-month-' . get_the_time('m') . '" title="' . get_the_time('M') . '">' . get_the_time('M') . ' Archives</strong></li>';
               
        } else if ( is_year() ) { // Display year archive

            echo '<li class="item-current item-current-' . get_the_time('Y') . '"><strong class="bread-current bread-current-' . get_the_time('Y') . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</strong></li>';
               
        } else if ( is_author() ) { // Author archive
               
            // Get the author information
            global $author;
            $userdata = get_userdata( $author );
               
            // Display author name
            echo '<li class="item-current item-current-' . $userdata->user_nicename . '"><strong class="bread-current bread-current-' . $userdata->user_nicename . '" title="' . $userdata->display_name . '">' . 'Author: ' . $userdata->display_name . '</strong></li>';
           
        } else if ( get_query_var('paged') ) {
               
            // Paginated archives
            echo '<li class="item-current item-current-' . get_query_var('paged') . '"><strong class="bread-current bread-current-' . get_query_var('paged') . '" title="Page ' . get_query_var('paged') . '">'.__('Page') . ' ' . get_query_var('paged') . '</strong></li>';
               
        } else if ( is_search() ) {
           
            // Search results page
            echo '<li class="item-current item-current-' . get_search_query() . '"><strong class="bread-current bread-current-' . get_search_query() . '" title="Search results for: ' . get_search_query() . '">Search results for: ' . get_search_query() . '</strong></li>';
           
        } elseif ( is_404() ) {
               
            // 404 page
            echo '<li>' . 'Error 404' . '</li>';
        }

        echo '</ul>';  
    }
}

将调用代码放到主题模板适当位置比如header.php中：

<?php if (function_exists('tsh_wp_custom_breadcrumbs')) tsh_wp_custom_breadcrumbs(); ?>

配套样式：

#tsh_breadcrumbs .separator{
    font-size:20px;
    color:#ccc;
    font-weight:100;
}
#tsh_breadcrumbs{
    overflow:hidden;
    text-align: center;
    list-style:none;
    margin:11px 0;
}
#tsh_breadcrumbs li{
    margin-right:14px;
    display:inline-block;
    vertical-align:middle;
}

可惜在分类归档页面不能显示父子分类层级，有点遗憾。

另一段代码：

function ah_breadcrumb() {

  // Check if is front/home page, return
  if ( is_front_page() ) {
    return;
  }

  // Define
  global $post;
  $custom_taxonomy  = ''; // If you have custom taxonomy place it here

  $defaults = array(
    'seperator'   =>  '»',
    'id'          =>  'ah-breadcrumb',
    'classes'     =>  'ah-breadcrumb',
    'home_title'  =>  esc_html__( 'Home', '' )
  );

  $sep  = '<li class="seperator">'. esc_html( $defaults['seperator'] ) .'</li>';

  // Start the breadcrumb with a link to your homepage
  echo '<ul id="'. esc_attr( $defaults['id'] ) .'" class="'. esc_attr( $defaults['classes'] ) .'">';

  // Creating home link
  echo '<li class="item"><a href="'. get_home_url() .'">'. esc_html( $defaults['home_title'] ) .'</a></li>' . $sep;

  if ( is_single() ) {

    // Get posts type
    $post_type = get_post_type();

    // If post type is not post
    if( $post_type != 'post' ) {

      $post_type_object   = get_post_type_object( $post_type );
      $post_type_link     = get_post_type_archive_link( $post_type );

      echo '<li class="item item-cat"><a href="'. $post_type_link .'">'. $post_type_object->labels->name .'</a></li>'. $sep;

    }

    // Get categories
    $category = get_the_category( $post->ID );

    // If category not empty
    if( !empty( $category ) ) {

      // Arrange category parent to child
      $category_values      = array_values( $category );
      $get_last_category    = end( $category_values );
      // $get_last_category    = $category[count($category) - 1];
      $get_parent_category  = rtrim( get_category_parents( $get_last_category->term_id, true, ',' ), ',' );
      $cat_parent           = explode( ',', $get_parent_category );

      // Store category in $display_category
      $display_category = '';
      foreach( $cat_parent as $p ) {
        $display_category .=  '<li class="item item-cat">'. $p .'</li>' . $sep;
      }

    }

    // If it's a custom post type within a custom taxonomy
    $taxonomy_exists = taxonomy_exists( $custom_taxonomy );

    if( empty( $get_last_category ) && !empty( $custom_taxonomy ) && $taxonomy_exists ) {

      $taxonomy_terms = get_the_terms( $post->ID, $custom_taxonomy );
      $cat_id         = $taxonomy_terms[0]->term_id;
      $cat_link       = get_term_link($taxonomy_terms[0]->term_id, $custom_taxonomy);
      $cat_name       = $taxonomy_terms[0]->name;

    }

    // Check if the post is in a category
    if( !empty( $get_last_category ) ) {

      echo $display_category;
      echo '<li class="item item-current">'. get_the_title() .'</li>';

    } else if( !empty( $cat_id ) ) {

      echo '<li class="item item-cat"><a href="'. $cat_link .'">'. $cat_name .'</a></li>' . $sep;
      echo '<li class="item-current item">'. get_the_title() .'</li>';

    } else {

      echo '<li class="item-current item">'. get_the_title() .'</li>';

    }

  } else if( is_archive() ) {

    if( is_tax() ) {
      // Get posts type
      $post_type = get_post_type();

      // If post type is not post
      if( $post_type != 'post' ) {

        $post_type_object   = get_post_type_object( $post_type );
        $post_type_link     = get_post_type_archive_link( $post_type );

        echo '<li class="item item-cat item-custom-post-type-' . $post_type . '"><a href="' . $post_type_link . '">' . $post_type_object->labels->name . '</a></li>' . $sep;

      }

      $custom_tax_name = get_queried_object()->name;
      echo '<li class="item item-current">'. $custom_tax_name .'</li>';

    } else if ( is_category() ) {

      $parent = get_queried_object()->category_parent;

      if ( $parent !== 0 ) {

        $parent_category = get_category( $parent );
        $category_link   = get_category_link( $parent );

        echo '<li class="item"><a href="'. esc_url( $category_link ) .'">'. $parent_category->name .'</a></li>' . $sep;

      }

      echo '<li class="item item-current">'. single_cat_title( '', false ) .'</li>';

    } else if ( is_tag() ) {

      // Get tag information
      $term_id        = get_query_var('tag_id');
      $taxonomy       = 'post_tag';
      $args           = 'include=' . $term_id;
      $terms          = get_terms( $taxonomy, $args );
      $get_term_name  = $terms[0]->name;

      // Display the tag name
      echo '<li class="item-current item">'. $get_term_name .'</li>';

    } else if( is_day() ) {

      // Day archive

      // Year link
      echo '<li class="item-year item"><a href="'. get_year_link( get_the_time('Y') ) .'">'. get_the_time('Y') . ' Archives</a></li>' . $sep;

      // Month link
      echo '<li class="item-month item"><a href="'. get_month_link( get_the_time('Y'), get_the_time('m') ) .'">'. get_the_time('M') .' Archives</a></li>' . $sep;

      // Day display
      echo '<li class="item-current item">'. get_the_time('jS') .' '. get_the_time('M'). ' Archives</li>';

    } else if( is_month() ) {

      // Month archive

      // Year link
      echo '<li class="item-year item"><a href="'. get_year_link( get_the_time('Y') ) .'">'. get_the_time('Y') . ' Archives</a></li>' . $sep;

      // Month Display
      echo '<li class="item-month item-current item">'. get_the_time('M') .' Archives</li>';

    } else if ( is_year() ) {

      // Year Display
      echo '<li class="item-year item-current item">'. get_the_time('Y') .' Archives</li>';

    } else if ( is_author() ) {

      // Auhor archive

      // Get the author information
      global $author;
      $userdata = get_userdata( $author );

      // Display author name
      echo '<li class="item-current item">'. 'Author: '. $userdata->display_name . '</li>';

    } else {

      echo '<li class="item item-current">'. post_type_archive_title() .'</li>';

    }

  } else if ( is_page() ) {

    // Standard page
    if( $post->post_parent ) {

      // If child page, get parents
      $anc = get_post_ancestors( $post->ID );

      // Get parents in the right order
      $anc = array_reverse( $anc );

      // Parent page loop
      if ( !isset( $parents ) ) $parents = null;
      foreach ( $anc as $ancestor ) {

        $parents .= '<li class="item-parent item"><a href="'. get_permalink( $ancestor ) .'">'. get_the_title( $ancestor ) .'</a></li>' . $sep;

      }

      // Display parent pages
      echo $parents;

      // Current page
      echo '<li class="item-current item">'. get_the_title() .'</li>';

    } else {

      // Just display current page if not parents
      echo '<li class="item-current item">'. get_the_title() .'</li>';

    }

  } else if ( is_search() ) {

    // Search results page
    echo '<li class="item-current item">Search results for: '. get_search_query() .'</li>';

  } else if ( is_404() ) {

    // 404 page
    echo '<li class="item-current item">' . 'Error 404' . '</li>';

  }

  // End breadcrumb
  echo '</ul>';

}

ah_breadcrumb();