Tạo breadcrumbs trên wordpress

// Breadcrumbs
function get_breadcrumbs() {
    $breadcrumbs = array();
    $category_count = 0;
    $parent_arrive = 0;
    if (is_single()) {
        $post_data = get_queried_object();
        $breadcrumbs[$category_count]['id'] = $post_data->ID;
        $breadcrumbs[$category_count]['name'] = $post_data->post_title;
        $category_count++;
        $current_category = get_the_category();
        $current_category_id = $current_category[0]->term_id;
        $category = get_category($current_category_id);
    } else {
        $category = get_category(get_query_var('cat'));
    }

    $breadcrumbs[$category_count]['id'] = $category->term_id;
    $breadcrumbs[$category_count]['name'] = $category->name;
    $category_count++;

    while( $parent_arrive == 0 ) {
        if ($category->category_parent == 0) {
          $parent_arrive = 1;
        } else {
          $breadcrumbs[$category_count]['id'] = $category->category_parent;
          $category = get_category($category->category_parent);
          $breadcrumbs[$category_count]['name'] = $category->name;
        }
      $category_count++;
    }
    $breadcrumbs = array_reverse($breadcrumbs);
    return $breadcrumbs;

}
?>

<?php
//add_action('flatsome_after_header','inno_breadcrumbs_custom',20);
function inno_breadcrumbs_custom(){
  $breadcrumbs = get_breadcrumbs();
  ?>
  <ol itemscope itemtype="http://schema.org/BreadcrumbList">
    <li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">
      <a itemprop="item" href="<?php echo site_url(); ?>">
        <span itemprop="name">Home</span>
      </a>
      <meta itemprop="position" content="1" />
    </li>
    <?php foreach ($breadcrumbs as $breadcrumb_index => $breadcrumb) { ?>
      <li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">
        <a itemprop="item" href="<?php echo get_category_link($breadcrumb['id']); ?>">
          <span itemprop="name"><?php echo $breadcrumb['name']; ?></span>
        </a>
        <meta itemprop="position" content="<?php echo $breadcrumb_index + 2; ?>" />
      </li>  
    <?php } ?>
</ol>
  <?php
}


/*=============================================
                BREADCRUMBS
=============================================*/
//  to include in functions.php
function the_breadcrumb()
{
    $showOnHome = 0; // 1 - show breadcrumbs on the homepage, 0 - don't show
    $delimiter = '&raquo;'; // delimiter between crumbs
    $home = 'Home'; // text for the 'Home' link
    $showCurrent = 1; // 1 - show current post/page title in breadcrumbs, 0 - don't show
    $before = '<span class="current">'; // tag before the current crumb
    $after = '</span>'; // tag after the current crumb

    global $post;
    $homeLink = get_bloginfo('url');
    if (is_home() || is_front_page()) {
        if ($showOnHome == 1) {
            echo '<div id="crumbs"><a href="' . $homeLink . '">' . $home . '</a></div>';
        }
    } else {
        echo '<div id="crumbs"><a href="' . $homeLink . '">' . $home . '</a> ' . $delimiter . ' ';
        if (is_category()) {
            $thisCat = get_category(get_query_var('cat'), false);
            if ($thisCat->parent != 0) {
                echo get_category_parents($thisCat->parent, true, ' ' . $delimiter . ' ');
            }
            echo $before . 'Archive by category "' . single_cat_title('', false) . '"' . $after;
        } elseif (is_search()) {
            echo $before . 'Search results for "' . get_search_query() . '"' . $after;
        } elseif (is_day()) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo '<a href="' . get_month_link(get_the_time('Y'), get_the_time('m')) . '">' . get_the_time('F') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('d') . $after;
        } elseif (is_month()) {
            echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a> ' . $delimiter . ' ';
            echo $before . get_the_time('F') . $after;
        } elseif (is_year()) {
            echo $before . get_the_time('Y') . $after;
        } elseif (is_single() && !is_attachment()) {
            if (get_post_type() != 'post') {
                $post_type = get_post_type_object(get_post_type());
                $slug = $post_type->rewrite;
                echo '<a href="' . $homeLink . '/' . $slug['slug'] . '/">' . $post_type->labels->singular_name . '</a>';
                if ($showCurrent == 1) {
                    echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
                }
            } else {
                $cat = get_the_category();
                $cat = $cat[0];
                $cats = get_category_parents($cat, true, ' ' . $delimiter . ' ');
                if ($showCurrent == 0) {
                    $cats = preg_replace("#^(.+)\s$delimiter\s$#", "$1", $cats);
                }
                echo $cats;
                if ($showCurrent == 1) {
                    echo $before . get_the_title() . $after;
                }
            }
        } elseif (!is_single() && !is_page() && get_post_type() != 'post' && !is_404()) {
            $post_type = get_post_type_object(get_post_type());
            echo $before . $post_type->labels->singular_name . $after;
        } elseif (is_attachment()) {
            $parent = get_post($post->post_parent);
            $cat = get_the_category($parent->ID);
            $cat = $cat[0];
            echo get_category_parents($cat, true, ' ' . $delimiter . ' ');
            echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a>';
            if ($showCurrent == 1) {
                echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
            }
        } elseif (is_page() && !$post->post_parent) {
            if ($showCurrent == 1) {
                echo $before . get_the_title() . $after;
            }
        } elseif (is_page() && $post->post_parent) {
            $parent_id  = $post->post_parent;
            $breadcrumbs = array();
            while ($parent_id) {
                $page = get_page($parent_id);
                $breadcrumbs[] = '<a href="' . get_permalink($page->ID) . '">' . get_the_title($page->ID) . '</a>';
                $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 ' ' . $delimiter . ' ';
                }
            }
            if ($showCurrent == 1) {
                echo ' ' . $delimiter . ' ' . $before . get_the_title() . $after;
            }
        } elseif (is_tag()) {
            echo $before . 'Posts tagged "' . single_tag_title('', false) . '"' . $after;
        } elseif (is_author()) {
            global $author;
            $userdata = get_userdata($author);
            echo $before . 'Articles posted by ' . $userdata->display_name . $after;
        } elseif (is_404()) {
            echo $before . 'Error 404' . $after;
        }
        if (get_query_var('paged')) {
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo ' (';
            }
            echo __('Page') . ' ' . get_query_var('paged');
            if (is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author()) {
                echo ')';
            }
        }
        echo '</div>';
    }
} // end the_breadcrumb()

//add_action('flatsome_after_header','the_breadcrumb',20);

add_action('flatsome_after_header','inno_the_breadcrumb',20);
function inno_the_breadcrumb(){
  if ( function_exists('the_breadcrumb') ) {
    the_breadcrumb();
  }
}