你为什么要functions.php? 转到Settings > Permalinks 和使用something/%category% 作为您的Category base

Wordpress没有一种内置的方法来很好地做到这一点。但是，可以通过重新注册默认的帖子类型来完成。在您的functions.php

add_action(\'init\', \'customize_default_post_type\');
function customize_default_post_type() {
    $labels = array(
        \'name\'               => _x( \'Posts\', \'post type general name\'),
        \'singular_name\'      => _x( \'Post\', \'post type singular name\'),
        \'menu_name\'          => _x( \'Posts\', \'admin menu\'),
        \'name_admin_bar\'     => _x( \'Posts\', \'add post on admin bar\'),
        \'add_new\'            => _x( \'Add New Post\', \'post\'),
        \'add_new_item\'       => __( \'New Post\'),
        \'new_item\'           => __( \'New Post\'),
        \'edit_item\'          => __( \'Edit Post\'),
        \'view_item\'          => __( \'View Post\'),
        \'all_items\'          => __( \'All Posts\'),
        \'search_items\'       => __( \'Search Posts\'),
        \'parent_item_colon\'  => __( \'Parent Posts:\'),
        \'not_found\'          => __( \'No posts found.\'),
        \'not_found_in_trash\' => __( \'No posts found in Trash.\')
    );
    register_post_type( \'post\', [
        \'labels\' => $labels,
        \'public\'  => true,
        \'_builtin\' => false,
        \'_edit_link\' => \'post.php?post=%d\',
        \'capability_type\' => \'post\',
        \'map_meta_cap\' => true,
        \'hierarchical\' => false,
        \'rewrite\' => array( \'slug\' => \'<your custom slug>\' ),  //<--- Custom slug goes here.
        \'query_var\' => false,
        \'supports\' => array( \'title\', \'editor\', \'author\', \'thumbnail\', \'excerpt\', \'trackbacks\', \'custom-fields\', \'comments\', \'revisions\', \'post-formats\' ),
    ] );
}

/** This bit prevents the post editor on the backend from being listed twice **/
add_action( \'admin_menu\', \'customizeAdminMenu\' );
function customizeAdminMenu(){
    remove_menu_page(\'edit.php\');
}