我很难理解为什么知识库和文章中没有出现类别。这个代码怎么了？

<?php
// Custom post types

/* faq */
add_action( \'init\', \'faq_post_type\' );
if ( ! function_exists( \'faq_post_type\' ) ) {
function faq_post_type() {

    //Register FAQ Post Type
    register_post_type( \'faq\',
        array(
        \'description\' => __( \'FAQ Articles\', \'guerilla\' ),
        \'labels\' => array(
                \'name\' => __( \'FAQ\', \'guerilla\' ),
                \'singular_name\' => __( \'FAQ\', \'guerilla\' ),
                \'add_new\' => __(\'Add New\', \'guerilla\'),  
                \'add_new_item\' => __(\'Add New FAQ\', \'guerilla\'),  
                \'edit_item\' => __(\'Edit FAQ\', \'guerilla\'),  
                \'new_item\' => __(\'New FAQ\', \'guerilla\'),  
                \'view_item\' => __(\'View FAQ\', \'guerilla\'),  
                \'search_items\' => __(\'Search FAQ\', \'guerilla\'),  
                \'not_found\' =>  __(\'No FAQ found\', \'guerilla\'),  
                \'not_found_in_trash\' => __(\'No FAQ found in Trash\', \'guerilla\')
            ),
        \'public\' => true,
        \'menu_position\' => 7,
        \'rewrite\' => array(\'slug\' => \'faq\'),
        \'supports\' => array(
            \'title\',
            \'editor\'),
        \'public\' => true,
        \'show_ui\' => true,
        \'publicly_queryable\' => true,
        \'exclude_from_search\' => false
        )
    );
}
}

function faq_taxonomy()
{
    $labels = array(\'name\' => __( \'Categories\', \'guerilla\' ),
                    \'singular_name\' => __( \'Category\', \'guerilla\' ),
                    \'search_items\' =>  __( \'Search Categories\', \'guerilla\' ),
                    \'all_items\' => __( \'All Categories\', \'guerilla\' ),
                    \'parent_item\' => __( \'Parent Category\', \'guerilla\' ),
                    \'parent_item_colon\' => __( \'Parent Category:\', \'guerilla\' ),
                    \'edit_item\' => __( \'Edit Category\', \'guerilla\' ),
                    \'update_item\' => __( \'Update Category\', \'guerilla\' ),
                    \'add_new_item\' => __( \'Add New Category\', \'guerilla\' ),
                    \'new_item_name\' => __( \'New Category Name\', \'guerilla\' ),
                    \'menu_name\' => __( \'Categories\', \'guerilla\' ) );

    register_taxonomy(  \'faq_category\',
                        array( \'faq\' ),
                        array( \'hierarchical\' => true,
                        \'labels\' => $labels,
                        \'show_ui\' => true,
                        \'public\' => true,
                        \'query_var\' => true,
                        \'rewrite\' => array( \'slug\' => \'faq_category\' )));
}

add_action( \'init\', \'faq_taxonomy\' );

/* Knowledgebase*/
add_action( \'init\', \'KnowledgeBase_post_type\' );
if ( ! function_exists( \'KnowledgeBase_post_type\' ) ) {
function KnowledgeBase_post_type() {


    register_post_type( \'KnowledgeBase\',
        array(
        \'description\' => __( \'KnowledgeBase Articles\', \'guerilla\' ),
        \'labels\' => array(
                \'name\' => __( \'KnowledgeBase\', \'guerilla\' ),
                \'singular_name\' => __( \'KnowledgeBase\', \'guerilla\' ),
                \'add_new\' => __(\'Add New\', \'guerilla\'),  
                \'add_new_item\' => __(\'Add New KnowledgeBase Articles\', \'guerilla\'),  
                \'edit_item\' => __(\'Edit KnowledgeBase Articles\', \'guerilla\'),  
                \'new_item\' => __(\'New KnowledgeBase Articles\', \'guerilla\'),  
                \'view_item\' => __(\'View KnowledgeBase Articles\', \'guerilla\'),  
                \'search_items\' => __(\'Search KnowledgeBase Articles\', \'guerilla\'),  
                \'not_found\' =>  __(\'No KnowledgeBase Articles found\', \'guerilla\'),  
                \'not_found_in_trash\' => __(\'No KnowledgeBase Articles found in Trash\', \'guerilla\')
            ),
        \'public\' => true,
        \'menu_position\' => 5,
        \'rewrite\' => array(\'slug\' => \'KnowledgeBase\'),
        \'supports\' => array(
            \'title\',
            \'editor\'),
        \'public\' => true,
        \'show_ui\' => true,
        \'publicly_queryable\' => true,
        \'exclude_from_search\' => false
        )
    );
}
}

function KnowledgeBase_taxonomy()
{
    $labels = array(\'name\' => __( \'Categories\', \'guerilla\' ),
                    \'singular_name\' => __( \'Category\', \'guerilla\' ),
                    \'search_items\' =>  __( \'Search Categories\', \'guerilla\' ),
                    \'all_items\' => __( \'All Categories\', \'guerilla\' ),
                    \'parent_item\' => __( \'Parent Category\', \'guerilla\' ),
                    \'parent_item_colon\' => __( \'Parent Category:\', \'guerilla\' ),
                    \'edit_item\' => __( \'Edit Category\', \'guerilla\' ),
                    \'update_item\' => __( \'Update Category\', \'guerilla\' ),
                    \'add_new_item\' => __( \'Add New Category\', \'guerilla\' ),
                    \'new_item_name\' => __( \'New Category Name\', \'guerilla\' ),
                    \'menu_name\' => __( \'Categories\', \'guerilla\' ) );

    register_taxonomy(  \'KnowledgeBase_category\',
                        array( \'KnowledgeBase\' ),
                        array( \'hierarchical\' => true,
                        \'labels\' => $labels,
                        \'show_ui\' => true,
                        \'public\' => true,
                        \'query_var\' => true,
                        \'rewrite\' => array( \'slug\' => \'KnowledgeBase_category\' )));
}

add_action( \'init\', \'KnowledgeBase_taxonomy\' );

/* Articles */
add_action( \'init\', \'Articles_post_type\' );
if ( ! function_exists( \'Articles_post_type\' ) ) {
function Articles_post_type() {

    //Register FAQ Post Type
    register_post_type( \'Articles\',
        array(
        \'description\' => __( \'Articles\', \'guerilla\' ),
        \'labels\' => array(
                \'name\' => __( \'Articles\', \'guerilla\' ),
                \'singular_name\' => __( \'Articles\', \'guerilla\' ),
                \'add_new\' => __(\'Add New\', \'guerilla\'),  
                \'add_new_item\' => __(\'Add New Articles\', \'guerilla\'),  
                \'edit_item\' => __(\'Edit Articles\', \'guerilla\'),  
                \'new_item\' => __(\'New Articles\', \'guerilla\'),  
                \'view_item\' => __(\'View Articles\', \'guerilla\'),  
                \'search_items\' => __(\'Search Articles\', \'guerilla\'),  
                \'not_found\' =>  __(\'No Articles found\', \'guerilla\'),  
                \'not_found_in_trash\' => __(\'No Articles found in Trash\', \'guerilla\')
            ),
        \'public\' => true,
        \'menu_position\' => 6,
        \'rewrite\' => array(\'slug\' => \'Articles\'),
        \'supports\' => array(
            \'title\',
            \'editor\'),
        \'public\' => true,
        \'show_ui\' => true,
        \'publicly_queryable\' => true,
        \'exclude_from_search\' => false
        )
    );
}
}

function Articles_taxonomy()
{
    $labels = array(\'name\' => __( \'Categories\', \'guerilla\' ),
                    \'singular_name\' => __( \'Category\', \'guerilla\' ),
                    \'search_items\' =>  __( \'Search Categories\', \'guerilla\' ),
                    \'all_items\' => __( \'All Categories\', \'guerilla\' ),
                    \'parent_item\' => __( \'Parent Category\', \'guerilla\' ),
                    \'parent_item_colon\' => __( \'Parent Category:\', \'guerilla\' ),
                    \'edit_item\' => __( \'Edit Category\', \'guerilla\' ),
                    \'update_item\' => __( \'Update Category\', \'guerilla\' ),
                    \'add_new_item\' => __( \'Add New Category\', \'guerilla\' ),
                    \'new_item_name\' => __( \'New Category Name\', \'guerilla\' ),
                    \'menu_name\' => __( \'Categories\', \'guerilla\' ) );

    register_taxonomy(  \'Article_category\',
                        array( \'Articles\' ),
                        array( \'hierarchical\' => true,
                        \'labels\' => $labels,
                        \'show_ui\' => true,
                        \'public\' => true,
                        \'query_var\' => true,
                        \'rewrite\' => array( \'slug\' => \'Article_category\' )));
}

add_action( \'init\', \'Articles_taxonomy\' );