/**
  * Runs through the various bbPress conditional tags to check the current page being viewed.  Once
  * a condition is met, add items to the $items array.
  *
  * @since  0.6.0
  * @access public
  * @return void
  */
 public function do_trail_items()
 {
     /* Add the network and site home links. */
     $this->do_network_home_link();
     $this->do_site_home_link();
     /* Get the forum post type object. */
     $post_type_object = get_post_type_object(bbp_get_forum_post_type());
     /* If not viewing the forum root/archive page and a forum archive exists, add it. */
     if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
         $this->items[] = '<a href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '">' . bbp_get_forum_archive_title() . '</a>';
     }
     /* If viewing the forum root/archive. */
     if (bbp_is_forum_archive()) {
         if (true === $this->args['show_title']) {
             $this->items[] = bbp_get_forum_archive_title();
         }
     } elseif (bbp_is_topic_archive()) {
         if (true === $this->args['show_title']) {
             $this->items[] = bbp_get_topic_archive_title();
         }
     } elseif (bbp_is_topic_tag()) {
         if (true === $this->args['show_title']) {
             $this->items[] = bbp_get_topic_tag_name();
         }
     } elseif (bbp_is_topic_tag_edit()) {
         $this->items[] = '<a href="' . bbp_get_topic_tag_link() . '">' . bbp_get_topic_tag_name() . '</a>';
         if (true === $this->args['show_title']) {
             $this->items[] = __('Edit', 'breadcrumb-trail');
         }
     } elseif (bbp_is_single_view()) {
         if (true === $this->args['show_title']) {
             $this->items[] = bbp_get_view_title();
         }
     } elseif (bbp_is_single_topic()) {
         /* Get the queried topic. */
         $topic_id = get_queried_object_id();
         /* Get the parent items for the topic, which would be its forum (and possibly forum grandparents). */
         $this->do_post_parents(bbp_get_topic_forum_id($topic_id));
         /* If viewing a split, merge, or edit topic page, show the link back to the topic.  Else, display topic title. */
         if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
             $this->items[] = '<a href="' . bbp_get_topic_permalink($topic_id) . '">' . bbp_get_topic_title($topic_id) . '</a>';
         } elseif (true === $this->args['show_title']) {
             $this->items[] = bbp_get_topic_title($topic_id);
         }
         /* If viewing a topic split page. */
         if (bbp_is_topic_split() && true === $this->args['show_title']) {
             $this->items[] = __('Split', 'breadcrumb-trail');
         } elseif (bbp_is_topic_merge() && true === $this->args['show_title']) {
             $this->items[] = __('Merge', 'breadcrumb-trail');
         } elseif (bbp_is_topic_edit() && true === $this->args['show_title']) {
             $this->items[] = __('Edit', 'breadcrumb-trail');
         }
     } elseif (bbp_is_single_reply()) {
         /* Get the queried reply object ID. */
         $reply_id = get_queried_object_id();
         /* Get the parent items for the reply, which should be its topic. */
         $this->do_post_parents(bbp_get_reply_topic_id($reply_id));
         /* If viewing a reply edit page, link back to the reply. Else, display the reply title. */
         if (bbp_is_reply_edit()) {
             $this->items[] = '<a href="' . bbp_get_reply_url($reply_id) . '">' . bbp_get_reply_title($reply_id) . '</a>';
             if (true === $this->args['show_title']) {
                 $this->items[] = __('Edit', 'breadcrumb-trail');
             }
         } elseif (true === $this->args['show_title']) {
             $this->items[] = bbp_get_reply_title($reply_id);
         }
     } elseif (bbp_is_single_forum()) {
         /* Get the queried forum ID and its parent forum ID. */
         $forum_id = get_queried_object_id();
         $forum_parent_id = bbp_get_forum_parent_id($forum_id);
         /* If the forum has a parent forum, get its parent(s). */
         if (0 !== $forum_parent_id) {
             $this->do_post_parents($forum_parent_id);
         }
         /* Add the forum title to the end of the trail. */
         if (true === $this->args['show_title']) {
             $this->items[] = bbp_get_forum_title($forum_id);
         }
     } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
         if (bbp_is_single_user_edit()) {
             $this->items[] = '<a href="' . bbp_get_user_profile_url() . '">' . bbp_get_displayed_user_field('display_name') . '</a>';
             if (true === $this->args['show_title']) {
                 $this->items[] = __('Edit', 'breadcrumb-trail');
             }
         } elseif (true === $this->args['show_title']) {
             $this->items[] = bbp_get_displayed_user_field('display_name');
         }
     }
     /* Return the bbPress breadcrumb trail items. */
     $this->items = apply_filters('breadcrumb_trail_get_bbpress_items', $this->items, $this->args);
 }

function porto_page_title_archive()
{
    global $wp_query;
    $post_type = $wp_query->query_vars['post_type'];
    $post_type_object = get_post_type_object($post_type);
    if (is_object($post_type_object)) {
        // woocommerce
        if ($post_type == 'product' && ($shop_title = porto_page_title_shop())) {
            return $shop_title;
        }
        // bbpress
        if (class_exists('bbPress') && $post_type == 'topic') {
            $archive_title = bbp_get_topic_archive_title();
            return $archive_title;
        }
        // default
        if (isset($post_type_object->label) && $post_type_object->label !== '') {
            $archive_title = $post_type_object->label;
        } elseif (isset($post_type_object->labels->menu_name) && $post_type_object->labels->menu_name !== '') {
            $archive_title = $post_type_object->labels->menu_name;
        } else {
            $archive_title = $post_type_object->name;
        }
    }
    return $archive_title;
}

/**
 * Custom page title for bbPress pages
 *
 * @since bbPress (r2788)
 *
 * @param string $title Optional. The title (not used).
 * @param string $sep Optional, default is '»'. How to separate the
 *                     various items within the page title.
 * @param string $seplocation Optional. Direction to display title, 'right'.
 * @uses bbp_is_single_user() To check if it's a user profile page
 * @uses bbp_is_single_user_edit() To check if it's a user profile edit page
 * @uses bbp_is_user_home() To check if the profile page is of the current user
 * @uses get_query_var() To get the user id
 * @uses get_userdata() To get the user data
 * @uses bbp_is_single_forum() To check if it's a forum
 * @uses bbp_get_forum_title() To get the forum title
 * @uses bbp_is_single_topic() To check if it's a topic
 * @uses bbp_get_topic_title() To get the topic title
 * @uses bbp_is_single_reply() To check if it's a reply
 * @uses bbp_get_reply_title() To get the reply title
 * @uses is_tax() To check if it's the tag page
 * @uses get_queried_object() To get the queried object
 * @uses bbp_is_single_view() To check if it's a view
 * @uses bbp_get_view_title() To get the view title
 * @uses apply_filters() Calls 'bbp_raw_title' with the title
 * @uses apply_filters() Calls 'bbp_profile_page_wp_title' with the title,
 *                        separator and separator location
 * @return string The tite
 */
function bbp_title($title = '', $sep = '»', $seplocation = '')
{
    // Store original title to compare
    $_title = $title;
    /** Archives **************************************************************/
    // Forum Archive
    if (bbp_is_forum_archive()) {
        $title = bbp_get_forum_archive_title();
        // Topic Archive
    } elseif (bbp_is_topic_archive()) {
        $title = bbp_get_topic_archive_title();
        /** Singles ***************************************************************/
        // Forum page
    } elseif (bbp_is_single_forum()) {
        $title = sprintf(__('Forum: %s', 'bbpress'), bbp_get_forum_title());
        // Topic page
    } elseif (bbp_is_single_topic()) {
        $title = sprintf(__('Topic: %s', 'bbpress'), bbp_get_topic_title());
        // Replies
    } elseif (bbp_is_single_reply()) {
        $title = bbp_get_reply_title();
        // Topic tag page (or edit)
    } elseif (bbp_is_topic_tag() || bbp_is_topic_tag_edit() || get_query_var('bbp_topic_tag')) {
        $term = get_queried_object();
        $title = sprintf(__('Topic Tag: %s', 'bbpress'), $term->name);
        /** Users *****************************************************************/
        // Profile page
    } elseif (bbp_is_single_user()) {
        // Current users profile
        if (bbp_is_user_home()) {
            $title = __('Your Profile', 'bbpress');
            // Other users profile
        } else {
            $userdata = get_userdata(bbp_get_user_id());
            $title = sprintf(__('%s\'s Profile', 'bbpress'), $userdata->display_name);
        }
        // Profile edit page
    } elseif (bbp_is_single_user_edit()) {
        // Current users profile
        if (bbp_is_user_home_edit()) {
            $title = __('Edit Your Profile', 'bbpress');
            // Other users profile
        } else {
            $userdata = get_userdata(bbp_get_user_id());
            $title = sprintf(__('Edit %s\'s Profile', 'bbpress'), $userdata->display_name);
        }
        /** Views *****************************************************************/
        // Views
    } elseif (bbp_is_single_view()) {
        $title = sprintf(__('View: %s', 'bbpress'), bbp_get_view_title());
    }
    // Filter the raw title
    $title = apply_filters('bbp_raw_title', $title, $sep, $seplocation);
    // Compare new title with original title
    if ($title == $_title) {
        return $title;
    }
    // Temporary separator, for accurate flipping, if necessary
    $t_sep = '%WP_TITILE_SEP%';
    $prefix = '';
    if (!empty($title)) {
        $prefix = " {$sep} ";
    }
    // sep on right, so reverse the order
    if ('right' == $seplocation) {
        $title_array = explode($t_sep, $title);
        $title_array = array_reverse($title_array);
        $title = implode(" {$sep} ", $title_array) . $prefix;
        // sep on left, do not reverse
    } else {
        $title_array = explode($t_sep, $title);
//.........这里部分代码省略.........

/**
 * Output the topic archive title
 *
 * @since 2.0.0 bbPress (r3249)
 *
 * @param string $title Default text to use as title
 */
function bbp_topic_archive_title($title = '')
{
    echo bbp_get_topic_archive_title($title);
}

 protected function _bbpress_items()
 {
     $item = array();
     $post_type_object = get_post_type_object(bbp_get_forum_post_type());
     if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
         $item[] = '<span typeof="v:Breadcrumb"><a href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '"  property="v:title" rel="v:url"><span>' . bbp_get_forum_archive_title() . '</span></a></span>';
     }
     if (bbp_is_forum_archive()) {
         $item[] = bbp_get_forum_archive_title();
     } elseif (bbp_is_topic_archive()) {
         $item[] = bbp_get_topic_archive_title();
     } elseif (bbp_is_single_view()) {
         $item[] = bbp_get_view_title();
     } elseif (bbp_is_single_topic()) {
         $topic_id = get_queried_object_id();
         $item = array_merge($item, $this->_get_parents(bbp_get_topic_forum_id($topic_id)));
         if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
             $item[] = '<span typeof="v:Breadcrumb"><a href="' . bbp_get_topic_permalink($topic_id) . '"  property="v:title" rel="v:url"><span>' . bbp_get_topic_title($topic_id) . '</span></a></span>';
         } else {
             $item[] = bbp_get_topic_title($topic_id);
         }
         if (bbp_is_topic_split()) {
             $item[] = __('Split', DH_DOMAIN);
         } elseif (bbp_is_topic_merge()) {
             $item[] = __('Merge', DH_DOMAIN);
         } elseif (bbp_is_topic_edit()) {
             $item[] = __('Edit', DH_DOMAIN);
         }
     } elseif (bbp_is_single_reply()) {
         $reply_id = get_queried_object_id();
         $item = array_merge($item, $this->_get_parents(bbp_get_reply_topic_id($reply_id)));
         if (!bbp_is_reply_edit()) {
             $item[] = bbp_get_reply_title($reply_id);
         } else {
             $item[] = '<span typeof="v:Breadcrumb"><a href="' . bbp_get_reply_url($reply_id) . '"  property="v:title" rel="v:url"><span>' . bbp_get_reply_title($reply_id) . '</span></a></span>';
             $item[] = __('Edit', DH_DOMAIN);
         }
     } elseif (bbp_is_single_forum()) {
         $forum_id = get_queried_object_id();
         $forum_parent_id = bbp_get_forum_parent_id($forum_id);
         if (0 !== $forum_parent_id) {
             $item = array_merge($item, $this->_get_parents($forum_parent_id));
         }
         $item[] = bbp_get_forum_title($forum_id);
     } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
         if (bbp_is_single_user_edit()) {
             $item[] = '<span typeof="v:Breadcrumb"><a href="' . bbp_get_user_profile_url() . '"  property="v:title" rel="v:url" ><span>' . bbp_get_displayed_user_field('display_name') . '</span></a></span>';
             $item[] = __('Edit', DH_DOMAIN);
         } else {
             $item[] = bbp_get_displayed_user_field('display_name');
         }
     }
     return $item;
 }

/**
 * Reset main query vars and filter 'the_content' to output a bbPress
 * template part as needed.
 *
 * @since bbPress (r3032)
 * @param string $template
 * @uses bbp_is_single_user() To check if page is single user
 * @uses bbp_get_single_user_template() To get user template
 * @uses bbp_is_single_user_edit() To check if page is single user edit
 * @uses bbp_get_single_user_edit_template() To get user edit template
 * @uses bbp_is_single_view() To check if page is single view
 * @uses bbp_get_single_view_template() To get view template
 * @uses bbp_is_forum_edit() To check if page is forum edit
 * @uses bbp_get_forum_edit_template() To get forum edit template
 * @uses bbp_is_topic_merge() To check if page is topic merge
 * @uses bbp_get_topic_merge_template() To get topic merge template
 * @uses bbp_is_topic_split() To check if page is topic split
 * @uses bbp_get_topic_split_template() To get topic split template
 * @uses bbp_is_topic_edit() To check if page is topic edit
 * @uses bbp_get_topic_edit_template() To get topic edit template
 * @uses bbp_is_reply_edit() To check if page is reply edit
 * @uses bbp_get_reply_edit_template() To get reply edit template
 * @uses bbp_set_theme_compat_template() To set the global theme compat template
 */
function bbp_template_include_theme_compat($template = '')
{
    // Bail if the template already matches a bbPress template. This includes
    // archive-* and single-* WordPress post_type matches (allowing
    // themes to use the expected format) as well as all bbPress-specific
    // template files for users, topics, forums, etc...
    if (!empty(bbpress()->theme_compat->bbpress_template)) {
        return $template;
    }
    /** Users *************************************************************/
    if (bbp_is_single_user_edit() || bbp_is_single_user()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => '', 'post_title' => esc_attr(bbp_get_displayed_user_field('display_name')), 'post_status' => bbp_get_public_status_id(), 'is_archive' => false, 'comment_status' => 'closed'));
        /** Forums ************************************************************/
        // Forum archive
    } elseif (bbp_is_forum_archive()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_title' => bbp_get_forum_archive_title(), 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => bbp_get_forum_post_type(), 'post_status' => bbp_get_public_status_id(), 'is_archive' => true, 'comment_status' => 'closed'));
        // Single Forum
    } elseif (bbp_is_forum_edit() || bbp_is_single_forum()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => bbp_get_forum_id(), 'post_title' => bbp_get_forum_title(), 'post_author' => bbp_get_forum_author_id(), 'post_date' => 0, 'post_content' => get_post_field('post_content', bbp_get_forum_id()), 'post_type' => bbp_get_forum_post_type(), 'post_status' => bbp_get_forum_visibility(), 'is_single' => true, 'comment_status' => 'closed'));
        /** Topics ************************************************************/
        // Topic archive
    } elseif (bbp_is_topic_archive()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_title' => bbp_get_topic_archive_title(), 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => bbp_get_topic_post_type(), 'post_status' => bbp_get_public_status_id(), 'is_archive' => true, 'comment_status' => 'closed'));
        // Single Topic
    } elseif (bbp_is_topic_edit() || bbp_is_single_topic()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => bbp_get_topic_id(), 'post_title' => bbp_get_topic_title(), 'post_author' => bbp_get_topic_author_id(), 'post_date' => 0, 'post_content' => get_post_field('post_content', bbp_get_topic_id()), 'post_type' => bbp_get_topic_post_type(), 'post_status' => bbp_get_topic_status(), 'is_single' => true, 'comment_status' => 'closed'));
        /** Replies ***********************************************************/
        // Reply archive
    } elseif (is_post_type_archive(bbp_get_reply_post_type())) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_title' => __('Replies', 'bbpress'), 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => bbp_get_reply_post_type(), 'post_status' => bbp_get_public_status_id(), 'comment_status' => 'closed'));
        // Single Reply
    } elseif (bbp_is_reply_edit() || bbp_is_single_reply()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => bbp_get_reply_id(), 'post_title' => bbp_get_reply_title(), 'post_author' => bbp_get_reply_author_id(), 'post_date' => 0, 'post_content' => get_post_field('post_content', bbp_get_reply_id()), 'post_type' => bbp_get_reply_post_type(), 'post_status' => bbp_get_reply_status(), 'comment_status' => 'closed'));
        /** Views *************************************************************/
    } elseif (bbp_is_single_view()) {
        // Reset post
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_title' => bbp_get_view_title(), 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => '', 'post_status' => bbp_get_public_status_id(), 'comment_status' => 'closed'));
        /** Topic Tags ********************************************************/
        // Topic Tag Edit
    } elseif (bbp_is_topic_tag_edit() || bbp_is_topic_tag()) {
        // Stash the current term in a new var
        set_query_var('bbp_topic_tag', get_query_var('term'));
        // Reset the post with our new title
        bbp_theme_compat_reset_post(array('ID' => 0, 'post_author' => 0, 'post_date' => 0, 'post_content' => '', 'post_type' => '', 'post_title' => sprintf(__('Topic Tag: %s', 'bbpress'), '<span>' . bbp_get_topic_tag_name() . '</span>'), 'post_status' => bbp_get_public_status_id(), 'comment_status' => 'closed'));
    }
    /**
     * If we are relying on bbPress's built in theme compatibility to load
     * the proper content, we need to intercept the_content, replace the
     * output, and display ours instead.
     *
     * To do this, we first remove all filters from 'the_content' and hook
     * our own function into it, which runs a series of checks to determine
     * the context, and then uses the built in shortcodes to output the
     * correct results from inside an output buffer.
     *
     * Uses bbp_get_theme_compat_templates() to provide fall-backs that
     * should be coded without superfluous mark-up and logic (prev/next
     * navigation, comments, date/time, etc...)
     * 
     * Hook into the 'bbp_get_bbpress_template' to override the array of
     * possible templates, or 'bbp_bbpress_template' to override the result.
     */
    if (bbp_is_theme_compat_active()) {
        // Remove all filters from the_content
        bbp_remove_all_filters('the_content');
        // Add a filter on the_content late, which we will later remove
        add_filter('the_content', 'bbp_replace_the_content');
        // Find the appropriate template file
        $template = bbp_get_theme_compat_templates();
//.........这里部分代码省略.........

 function cupid_breadcrumb_get_bbpress_items()
 {
     $item = array();
     $post_type_object = get_post_type_object(bbp_get_forum_post_type());
     if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
         $item[] = '<li typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '">' . bbp_get_forum_archive_title() . '</a></li>';
     }
     if (bbp_is_forum_archive()) {
         $item['last'] = bbp_get_forum_archive_title();
     } elseif (bbp_is_topic_archive()) {
         $item['last'] = bbp_get_topic_archive_title();
     } elseif (bbp_is_single_view()) {
         $item['last'] = bbp_get_view_title();
     } elseif (bbp_is_single_topic()) {
         $topic_id = get_queried_object_id();
         $item = array_merge($item, cupid_breadcrumb_get_parents(bbp_get_topic_forum_id($topic_id)));
         if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
             $item[] = '<li typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="' . bbp_get_topic_permalink($topic_id) . '">' . bbp_get_topic_title($topic_id) . '</a></li>';
         } else {
             $item['last'] = bbp_get_topic_title($topic_id);
         }
         if (bbp_is_topic_split()) {
             $item['last'] = __('Split', 'cupid');
         } elseif (bbp_is_topic_merge()) {
             $item['last'] = __('Merge', 'cupid');
         } elseif (bbp_is_topic_edit()) {
             $item['last'] = __('Edit', 'cupid');
         }
     } elseif (bbp_is_single_reply()) {
         $reply_id = get_queried_object_id();
         $item = array_merge($item, cupid_breadcrumb_get_parents(bbp_get_reply_topic_id($reply_id)));
         if (!bbp_is_reply_edit()) {
             $item['last'] = bbp_get_reply_title($reply_id);
         } else {
             $item[] = '<li typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="' . bbp_get_reply_url($reply_id) . '">' . bbp_get_reply_title($reply_id) . '</a></li>';
             $item['last'] = __('Edit', 'cupid');
         }
     } elseif (bbp_is_single_forum()) {
         $forum_id = get_queried_object_id();
         $forum_parent_id = bbp_get_forum_parent_id($forum_id);
         if (0 !== $forum_parent_id) {
             $item = array_merge($item, cupid_breadcrumb_get_parents($forum_parent_id));
         }
         $item['last'] = bbp_get_forum_title($forum_id);
     } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
         if (bbp_is_single_user_edit()) {
             $item[] = '<li typeof="v:Breadcrumb"><a rel="v:url" property="v:title" href="' . bbp_get_user_profile_url() . '">' . bbp_get_displayed_user_field('display_name') . '</a></li>';
             $item['last'] = __('Edit', 'cupid');
         } else {
             $item['last'] = bbp_get_displayed_user_field('display_name');
         }
     }
     return apply_filters('cupid_breadcrumb_get_bbpress_items', $item);
 }

/**
 * Custom page title for bbPress pages
 *
 * @since bbPress (r2788)
 *
 * @param string $title Optional. The title (not used).
 * @param string $sep Optional, default is '»'. How to separate the
 *                     various items within the page title.
 * @param string $seplocation Optional. Direction to display title, 'right'.
 * @uses bbp_is_single_user() To check if it's a user profile page
 * @uses bbp_is_single_user_edit() To check if it's a user profile edit page
 * @uses bbp_is_user_home() To check if the profile page is of the current user
 * @uses get_query_var() To get the user id
 * @uses get_userdata() To get the user data
 * @uses bbp_is_single_forum() To check if it's a forum
 * @uses bbp_get_forum_title() To get the forum title
 * @uses bbp_is_single_topic() To check if it's a topic
 * @uses bbp_get_topic_title() To get the topic title
 * @uses bbp_is_single_reply() To check if it's a reply
 * @uses bbp_get_reply_title() To get the reply title
 * @uses is_tax() To check if it's the tag page
 * @uses get_queried_object() To get the queried object
 * @uses bbp_is_single_view() To check if it's a view
 * @uses bbp_get_view_title() To get the view title
 * @uses apply_filters() Calls 'bbp_raw_title' with the title
 * @uses apply_filters() Calls 'bbp_profile_page_wp_title' with the title,
 *                        separator and separator location
 * @return string The tite
 */
function bbp_title($title = '', $sep = '»', $seplocation = '')
{
    // Title array
    $new_title = array();
    /** Archives **************************************************************/
    // Forum Archive
    if (bbp_is_forum_archive()) {
        $new_title['text'] = bbp_get_forum_archive_title();
        // Topic Archive
    } elseif (bbp_is_topic_archive()) {
        $new_title['text'] = bbp_get_topic_archive_title();
        /** Edit ******************************************************************/
        // Forum edit page
    } elseif (bbp_is_forum_edit()) {
        $new_title['text'] = bbp_get_forum_title();
        $new_title['format'] = esc_attr__('Forum Edit: %s', 'bbpress');
        // Topic edit page
    } elseif (bbp_is_topic_edit()) {
        $new_title['text'] = bbp_get_topic_title();
        $new_title['format'] = esc_attr__('Topic Edit: %s', 'bbpress');
        // Reply edit page
    } elseif (bbp_is_reply_edit()) {
        $new_title['text'] = bbp_get_reply_title();
        $new_title['format'] = esc_attr__('Reply Edit: %s', 'bbpress');
        // Topic tag edit page
    } elseif (bbp_is_topic_tag_edit()) {
        $new_title['text'] = bbp_get_topic_tag_name();
        $new_title['format'] = esc_attr__('Topic Tag Edit: %s', 'bbpress');
        /** Singles ***************************************************************/
        // Forum page
    } elseif (bbp_is_single_forum()) {
        $new_title['text'] = bbp_get_forum_title();
        $new_title['format'] = esc_attr__('Forum: %s', 'bbpress');
        // Topic page
    } elseif (bbp_is_single_topic()) {
        $new_title['text'] = bbp_get_topic_title();
        $new_title['format'] = esc_attr__('Topic: %s', 'bbpress');
        // Replies
    } elseif (bbp_is_single_reply()) {
        $new_title['text'] = bbp_get_reply_title();
        // Topic tag page
    } elseif (bbp_is_topic_tag() || get_query_var('bbp_topic_tag')) {
        $new_title['text'] = bbp_get_topic_tag_name();
        $new_title['format'] = esc_attr__('Topic Tag: %s', 'bbpress');
        /** Users *****************************************************************/
        // Profile page
    } elseif (bbp_is_single_user()) {
        // User is viewing their own profile
        if (bbp_is_user_home()) {
            $new_title['text'] = esc_attr_x('Your', 'User viewing his/her own profile', 'bbpress');
            // User is viewing someone else's profile (so use their display name)
        } else {
            $new_title['text'] = sprintf(esc_attr_x("%s's", 'User viewing another users profile', 'bbpress'), get_userdata(bbp_get_user_id())->display_name);
        }
        // User topics created
        if (bbp_is_single_user_topics()) {
            $new_title['format'] = esc_attr__("%s Topics", 'bbpress');
            // User rueplies created
        } elseif (bbp_is_single_user_replies()) {
            $new_title['format'] = esc_attr__("%s Replies", 'bbpress');
            // User favorites
        } elseif (bbp_is_favorites()) {
            $new_title['format'] = esc_attr__("%s Favorites", 'bbpress');
            // User subscriptions
        } elseif (bbp_is_subscriptions()) {
            $new_title['format'] = esc_attr__("%s Subscriptions", 'bbpress');
            // User "home"
        } else {
            $new_title['format'] = esc_attr__("%s Profile", 'bbpress');
        }
        // Profile edit page
//.........这里部分代码省略.........

/**
 * Gets the items for the breadcrumb item if bbPress is installed.
 *
 * @since 0.4
 *
 * @param array $args Mixed arguments for the menu.
 * @return array List of items to be shown in the item.
 */
function breadcrumbs_plus_get_bbpress_items($args = array())
{
    $item = array();
    $post_type_object = get_post_type_object(bbp_get_forum_post_type());
    if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
        if (function_exists('bp_is_active')) {
            global $bp;
            // we're outside the loop!
            // Assign some variables here
            $page1 = isset($bp->members->root_slug) ? $bp->members->root_slug : '';
            // slug for the Members page. The BuddyPress default is 'members'.
            $page2 = isset($bp->groups->root_slug) ? $bp->groups->root_slug : '';
            // slug for the Groups page. The BuddyPress default is 'groups'.
            $page3 = isset($bp->activity->root_slug) ? $bp->activity->root_slug : '';
            // slug for the Activity page. The BuddyPress default is 'activity'.
            $page4 = isset($bp->forums->root_slug) ? $bp->forums->root_slug : '';
            // slug for the Forums page. The BuddyPress default is 'forums'.
            $page5 = isset($bp->achievements->root_slug) ? $bp->achievements->root_slug : '';
            // slug for the Achievements page. The BuddyPress default is 'achievements'.
            if (!bp_is_blog_page() && (is_page() || is_page($page1) || is_page($page2) || is_page($page3) || is_page($page4) || is_page($page5)) && !bp_is_user() && !bp_is_single_item() && !bp_is_register_page()) {
                $item[] = '';
            }
            if (bp_is_user() && !bp_is_register_page()) {
                $item[] = '';
            }
        } else {
            //$item[] = '<div class="vbreadcrumb" typeof="v:Breadcrumb"><a href="' . get_post_type_archive_link( bbp_get_forum_post_type() ) . '" rel="v:url" property="v:title">' . bbp_get_forum_archive_title() . '</a></div>';
        }
    }
    if (bbp_is_forum_archive()) {
        $item[] = bbp_get_forum_archive_title();
    } else {
        $item[] = '<div class="vbreadcrumb" typeof="v:Breadcrumb"><a href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '" rel="v:url" property="v:title">' . bbp_get_forum_archive_title() . '</a></div>';
    }
    if (bbp_is_topic_archive()) {
        $item[] = bbp_get_topic_archive_title();
    } elseif (bbp_is_single_view()) {
        $item[] = bbp_get_view_title();
    } elseif (bbp_is_single_topic()) {
        $topic_id = get_queried_object_id();
        $item = array_merge($item, breadcrumbs_plus_get_parents(bbp_get_topic_forum_id($topic_id)));
        if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
            $item[] = '<div class="vbreadcrumb" typeof="v:Breadcrumb"><a href="' . bbp_get_topic_permalink($topic_id) . '" rel="v:url" property="v:title">' . bbp_get_topic_title($topic_id) . '</a></div>';
        } else {
            $item[] = '';
        }
        if (bbp_is_topic_split()) {
            $item[] = __('Split', 'framework');
        } elseif (bbp_is_topic_merge()) {
            $item[] = __('Merge', 'framework');
        } elseif (bbp_is_topic_edit()) {
            $item[] = __('Edit', 'framework');
        }
    } elseif (bbp_is_single_reply()) {
        $reply_id = get_queried_object_id();
        $item = array_merge($item, breadcrumbs_plus_get_parents(bbp_get_reply_topic_id($reply_id)));
        if (!bbp_is_reply_edit()) {
            $item[] = bbp_get_reply_title($reply_id);
        } else {
            $item[] = '<div class="vbreadcrumb" typeof="v:Breadcrumb"><a href="' . bbp_get_reply_url($reply_id) . '" rel="v:url" property="v:title">' . bbp_get_reply_title($reply_id) . '</a></div>';
            $item[] = __('Edit', 'framework');
        }
    } elseif (bbp_is_single_forum()) {
        $forum_id = get_queried_object_id();
        $forum_parent_id = bbp_get_forum_parent_id($forum_id);
        if (0 !== $forum_parent_id) {
            $item = array_merge($item, breadcrumbs_plus_get_parents($forum_parent_id));
        }
        $item[] = bbp_get_forum_title($forum_id);
    } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
        if (bbp_is_single_user_edit()) {
            $item[] = '<div class="vbreadcrumb" typeof="v:Breadcrumb"><a href="' . bbp_get_user_profile_url() . '" rel="v:url" property="v:title">' . bbp_get_displayed_user_field('display_name') . '</a></div>';
            $item[] = __('Edit', 'framework');
        } else {
            $item[] = bbp_get_displayed_user_field('display_name');
        }
    }
    return apply_filters('breadcrumbs_plus_get_bbpress_items', $item, $args);
}

//.........这里部分代码省略.........
                 foreach ($breadcrumbs as $crumb) {
                     echo $crumb . '' . $delimiter;
                 }
                 echo get_the_title();
             } elseif (is_attachment()) {
                 $parent = get_post($post->post_parent);
                 $cat = get_the_category($parent->ID);
                 $cat = $cat[0];
                 /* [email protected] patch:
                 			   Fix for Catchable fatal error: Object of class WP_Error could not be converted to string
                 			   ref: https://wordpress.org/support/topic/catchable-fatal-error-object-of-class-wp_error-could-not-be-converted-to-string-11
                 			*/
                 echo is_wp_error($cat_parents = get_category_parents($cat, TRUE, '' . $delimiter . '')) ? '' : $cat_parents;
                 /* end [email protected] patch */
                 echo '<a href="' . get_permalink($parent) . '">' . $parent->post_title . '</a>' . $delimiter;
                 echo get_the_title();
             } elseif (is_search()) {
                 echo __('Search results for &ldquo;', 'mk_framework') . get_search_query() . '&rdquo;';
             } elseif (is_tag()) {
                 echo __('Tag &ldquo;', 'mk_framework') . single_tag_title('', false) . '&rdquo;';
             } elseif (is_author()) {
                 $userdata = get_userdata(get_the_author_meta('ID'));
                 echo __('Author:', 'mk_framework') . ' ' . $userdata->display_name;
             } 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 get_the_time('d');
             } elseif (is_month()) {
                 echo '<a href="' . get_year_link(get_the_time('Y')) . '">' . get_the_time('Y') . '</a>' . $delimiter;
                 echo get_the_time('F');
             } elseif (is_year()) {
                 echo get_the_time('Y');
             }
         }
     }
     if (get_query_var('paged')) {
         echo ' (' . __('Page', 'mk_framework') . ' ' . get_query_var('paged') . ')';
     }
     if (is_tax()) {
         $term = get_term_by('slug', get_query_var('term'), get_query_var('taxonomy'));
         if (function_exists('is_woocommerce') && is_woocommerce() && is_archive()) {
             echo $delimiter;
         }
         echo '<span>' . $term->name . '</span>';
     }
     if (function_exists('is_bbpress') && is_bbpress()) {
         $item = array();
         $post_type_object = get_post_type_object(bbp_get_forum_post_type());
         if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
             $item[] = '<a href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '">' . bbp_get_forum_archive_title() . '</a>';
         }
         if (bbp_is_forum_archive()) {
             $item[] = bbp_get_forum_archive_title();
         } elseif (bbp_is_topic_archive()) {
             $item[] = bbp_get_topic_archive_title();
         } elseif (bbp_is_single_view()) {
             $item[] = bbp_get_view_title();
         } elseif (bbp_is_single_topic()) {
             $topic_id = get_queried_object_id();
             $item = array_merge($item, mk_breadcrumbs_get_parents(bbp_get_topic_forum_id($topic_id)));
             if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
                 $item[] = '<a href="' . bbp_get_topic_permalink($topic_id) . '">' . bbp_get_topic_title($topic_id) . '</a>';
             } else {
                 $item[] = bbp_get_topic_title($topic_id);
             }
             if (bbp_is_topic_split()) {
                 $item[] = __('Split', 'mk_framework');
             } elseif (bbp_is_topic_merge()) {
                 $item[] = __('Merge', 'mk_framework');
             } elseif (bbp_is_topic_edit()) {
                 $item[] = __('Edit', 'mk_framework');
             }
         } elseif (bbp_is_single_reply()) {
             $reply_id = get_queried_object_id();
             $item = array_merge($item, mk_breadcrumbs_get_parents(bbp_get_reply_topic_id($reply_id)));
             if (!bbp_is_reply_edit()) {
                 $item[] = bbp_get_reply_title($reply_id);
             } else {
                 $item[] = '<a href="' . bbp_get_reply_url($reply_id) . '">' . bbp_get_reply_title($reply_id) . '</a>';
                 $item[] = __('Edit', 'mk_framework');
             }
         } elseif (bbp_is_single_forum()) {
             $forum_id = get_queried_object_id();
             $forum_parent_id = bbp_get_forum_parent_id($forum_id);
             if (0 !== $forum_parent_id) {
                 $item = array_merge($item, mk_breadcrumbs_get_parents($forum_parent_id));
             }
             $item[] = bbp_get_forum_title($forum_id);
         } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
             if (bbp_is_single_user_edit()) {
                 $item[] = '<a href="' . bbp_get_user_profile_url() . '">' . bbp_get_displayed_user_field('display_name') . '</a>';
                 $item[] = __('Edit', 'mk_framework');
             } else {
                 $item[] = bbp_get_displayed_user_field('display_name');
             }
         }
         echo implode($delimiter, $item);
     }
     echo "</div></div>";
 }

/**
 * Gets the items for the breadcrumb item if bbPress is installed.
 *
 * @since 0.4
 *
 * @param array $args Mixed arguments for the menu.
 * @return array List of items to be shown in the item.
 */
function breadcrumbs_plus_get_bbpress_items($args = array())
{
    $item = array();
    $post_type_object = get_post_type_object(bbp_get_forum_post_type());
    if (!empty($post_type_object->has_archive) && !bbp_is_forum_archive()) {
        $item[] = '<a href="' . get_post_type_archive_link(bbp_get_forum_post_type()) . '">' . bbp_get_forum_archive_title() . '</a>';
    }
    if (bbp_is_forum_archive()) {
        $item[] = bbp_get_forum_archive_title();
    } elseif (bbp_is_topic_archive()) {
        $item[] = bbp_get_topic_archive_title();
    } elseif (bbp_is_single_view()) {
        $item[] = bbp_get_view_title();
    } elseif (bbp_is_single_topic()) {
        $topic_id = get_queried_object_id();
        $item = array_merge($item, breadcrumbs_plus_get_parents(bbp_get_topic_forum_id($topic_id)));
        if (bbp_is_topic_split() || bbp_is_topic_merge() || bbp_is_topic_edit()) {
            $item[] = '<a href="' . bbp_get_topic_permalink($topic_id) . '">' . bbp_get_topic_title($topic_id) . '</a>';
        } else {
            $item[] = bbp_get_topic_title($topic_id);
        }
        if (bbp_is_topic_split()) {
            $item[] = __('Split', 'theme_front');
        } elseif (bbp_is_topic_merge()) {
            $item[] = __('Merge', 'theme_front');
        } elseif (bbp_is_topic_edit()) {
            $item[] = __('Edit', 'theme_front');
        }
    } elseif (bbp_is_single_reply()) {
        $reply_id = get_queried_object_id();
        $item = array_merge($item, breadcrumbs_plus_get_parents(bbp_get_reply_topic_id($reply_id)));
        if (!bbp_is_reply_edit()) {
            $item[] = bbp_get_reply_title($reply_id);
        } else {
            $item[] = '<a href="' . bbp_get_reply_url($reply_id) . '">' . bbp_get_reply_title($reply_id) . '</a>';
            $item[] = __('Edit', 'theme_front');
        }
    } elseif (bbp_is_single_forum()) {
        $forum_id = get_queried_object_id();
        $forum_parent_id = bbp_get_forum_parent($forum_id);
        if (0 !== $forum_parent_id) {
            $item = array_merge($item, breadcrumbs_plus_get_parents($forum_parent_id));
        }
        $item[] = bbp_get_forum_title($forum_id);
    } elseif (bbp_is_single_user() || bbp_is_single_user_edit()) {
        if (bbp_is_single_user_edit()) {
            $item[] = '<a href="' . bbp_get_user_profile_url() . '">' . bbp_get_displayed_user_field('display_name') . '</a>';
            $item[] = __('Edit');
        } else {
            $item[] = bbp_get_displayed_user_field('display_name');
        }
    }
    return apply_filters('breadcrumbs_plus_get_bbpress_items', $item, $args);
}

 function x_bbpress_filter_breadcrumbs($r)
 {
     if (bbp_is_search()) {
         $current_text = bbp_get_search_title();
     } elseif (bbp_is_forum_archive()) {
         $current_text = bbp_get_forum_archive_title();
     } elseif (bbp_is_topic_archive()) {
         $current_text = bbp_get_topic_archive_title();
     } elseif (bbp_is_single_view()) {
         $current_text = bbp_get_view_title();
     } elseif (bbp_is_single_forum()) {
         $current_text = bbp_get_forum_title();
     } elseif (bbp_is_single_topic()) {
         $current_text = bbp_get_topic_title();
     } elseif (bbp_is_single_reply()) {
         $current_text = bbp_get_reply_title();
     } elseif (bbp_is_topic_tag() || get_query_var('bbp_topic_tag') && !bbp_is_topic_tag_edit()) {
         // Always include the tag name
         $tag_data[] = bbp_get_topic_tag_name();
         // If capable, include a link to edit the tag
         if (current_user_can('manage_topic_tags')) {
             $tag_data[] = '<a href="' . esc_url(bbp_get_topic_tag_edit_link()) . '" class="bbp-edit-topic-tag-link">' . esc_html__('(Edit)', 'bbpress') . '</a>';
         }
         // Implode the results of the tag data
         $current_text = sprintf(__('Topic Tag: %s', 'bbpress'), implode(' ', $tag_data));
     } elseif (bbp_is_topic_tag_edit()) {
         $current_text = __('Edit', 'bbpress');
     } else {
         $current_text = get_the_title();
     }
     $r = array('before' => '', 'after' => '', 'sep' => x_get_breadcrumb_delimiter(), 'pad_sep' => 0, 'sep_before' => '', 'sep_after' => '', 'crumb_before' => '', 'crumb_after' => '', 'include_home' => false, 'home_text' => x_get_breadcrumb_home_text(), 'include_root' => true, 'root_text' => bbp_get_forum_archive_title(), 'include_current' => true, 'current_text' => $current_text, 'current_before' => x_get_breadcrumb_current_before(), 'current_after' => x_get_breadcrumb_current_after());
     return $r;
 }