worepress重新排列不连续的文章ID

可在当前主题的functions.php中加入以下PHP代码，这样如果你只是单纯发文章，不发页面，不添加菜单，不上传媒体的话，基本上此后的文章ID是连续的，而且不改变之前已经发布的文章ID，不影响SEO

    function keep_id_continuous(){
        global $wpdb;
        $lastID = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE post_status = 'publish' OR post_status = 'draft' OR post_status = 'private' OR ( post_status = 'inherit' AND post_type = 'attachment' ) ORDER BY ID DESC LIMIT 1");
        $wpdb->query("DELETE FROM $wpdb->posts WHERE ( post_status = 'auto-draft' OR ( post_status = 'inherit' AND post_type = 'revision' ) ) AND ID > $lastID");
        $wpdb->query("ALTER TABLE $wpdb->posts AUTO_INCREMENT = 1");
    }
    // 将函数钩在新建文章、上传媒体和自定义菜单之前。
    add_filter( 'load-post-new.php', 'keep_id_continuous' );
    add_filter( 'load-media-new.php', 'keep_id_continuous' );
    add_filter( 'load-nav-menus.php', 'keep_id_continuous' );
    // 禁用自动保存，所以编辑长文章前请注意手动保存。
    add_action( 'admin_print_scripts', create_function( '$a', "wp_deregister_script('autosave');" ) );
    // 禁用修订版本
    remove_action( 'pre_post_update' , 'wp_save_post_revision' );