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Description

Returns Schema breadcrumb data to allow recognition of page's position in the site hierarchy.

Usage

$bool|array = Breadcrumb::generate();

Parameters

Returns

bool|array Array on success, false on failure.

Source

File name: wordpress-seo/src/generators/schema/breadcrumb.php
Lines:

  public function generate() {
    $breadcrumbs   = $this->context->presentation->breadcrumbs;
    $list_elements = [];

    // In case of pagination, replace the last breadcrumb, because it only contains "Page [number]" and has no URL.
    if ( $this->helpers->current_page->is_paged() || ( $this->context->indexable->number_of_pages > 1 ) ) {
      \array_pop( $breadcrumbs );

      $breadcrumbs[] = [
        'url'  => $this->context->canonical,
        'text' => $this->context->title,
      ];
    }

    // Only output breadcrumbs that are not hidden.
    $breadcrumbs = \array_filter( $breadcrumbs, [ $this, 'not_hidden' ] );

    \reset( $breadcrumbs );

    /*
		 * Check whether at least one of the breadcrumbs is broken.
		 * If so, do not output anything.
		 */
    foreach ( $breadcrumbs as $breadcrumb ) {
      if ( $this->is_broken( $breadcrumb ) ) {
        return false;
      }
    }
    // Create the last breadcrumb.
    $last_breadcrumb = \array_pop( $breadcrumbs );
    $breadcrumbs[]   = $this->format_last_breadcrumb( $last_breadcrumb );

    // Create intermediate breadcrumbs.
    foreach ( $breadcrumbs as $index => $breadcrumb ) {
      $list_elements[] = $this->create_breadcrumb( $index, $breadcrumb );
    }

    return [
      '@type'           => 'BreadcrumbList',
      '@id'             => $this->context->canonical . Schema_IDs::BREADCRUMB_HASH,
      'itemListElement' => $list_elements,
    ];
  }
 

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