custom taxonomies

    register_post_type( 'photo_gallery',
            array(
                'labels' => array(
                        'name' => __( 'Photo' ),
                        'singular_name' => __( 'Photoes' ),
                        'add_new' => __( 'Add New' ),
                        'add_new_item' => __( 'Add New photo' ),
                        'edit_item' => __( 'Edit photo' ),
                        'new_item' => __( 'New photo' ),
                        'view_item' => __( 'View photo' ),
                        'not_found' => __( 'Sorry, we couldn\'t find the photo you are looking for.' )
                ),
                /*custom taxonomies*/

            'taxonomies' => array('category'),

            'public' => true,
            'publicly_queryable' => true,
            'exclude_from_search' => true,
            'menu_position' => 14,
            'has_archive' => true,
            'hierarchical' => true,
            'capability_type' => 'post',
            'rewrite' => array( 'slug' => 'slide' ),
            'supports' => array( 'title', 'editor', 'custom-fields', 'thumbnail' )
            )
        );