WordPress在用户栏修改用户ID

/**
 * The following snippet is a collection of measures that can be taken to make it more difficult for
 * someone with bad intentions to "sniff" out the user-IDs of your site.
 *
 * The measures consist of direct SQL queries, a htaccess rule and lastly a snippet
 * that adds the new userIDs as a column in the WP backend
 *
 * @source: //wpwhitesecurity.com/wordpress-security/change-wordpress-administrator-id/
 * @source: //pippinsplugins.com/add-user-id-column-to-the-wordpress-users-table/
 */
/**
 * We start with the SQL queries
 */
// change tableprefix to the prefix you have set for your database
// change "9680" to the ID you want to change it TO
// change "1" to the ID of the user you want to change (the current user)
// MAKE A DATABASE BACKUP BEFORE YOU DO THIS!!!
UPDATE tableprefix_users SET ID = 9680 WHERE ID = 1;
// change tableprefix to the prefix you have set for your database
// change "9680" to the ID you want to change it TO
// change "1" to the ID of the user you want to change (the current user)
// MAKE A DATABASE BACKUP BEFORE YOU DO THIS!!!
UPDATE tableprefix_usermeta SET user_id = 9680 WHERE user_id = 1;
// change tableprefix to the prefix you have set for your database
// change "3869" to the assign the counter that WP uses to assign the next user
// MAKE A DATABASE BACKUP BEFORE YOU DO THIS!!!
ALTER TABLE tableprefix_users AUTO_INCREMENT = 3869;
/**
 * Add the snippets below to the functions or functionality file
 * to show the (new) userIDs as a column in the WP backend
 */
add_filter( 'manage_users_columns', 'so_add_userid_column' );
function so_add_userid_column( $columns ) {
    $columns['user_id'] = 'User ID';
    return $columns;
}
add_action( 'manage_users_custom_column',  'so_show_userid_column_content', 10, 3 );
function so_show_userid_column_content( $value, $column_name, $user_id ) {
    $user = get_userdata( $user_id );
    if ( 'user_id' == $column_name )
            return $user_id;
    return $value;
}
/* If you don't want to muck around in the database, you can prevent "author=" searches
 * by adding this to the .htaccess file in the root
 *
 * @source: comment by user on aforementioned article - //wpwhitesecurity.com/wordpress-security/change-wordpress-administrator-id/#comment-263053
 */
RewriteCond % {
    QUERY_STRING
}
author= [NC]
RewriteRule .* /? [R=301,L]