3个步骤

1. Add custom column
2. Fill data in custom column
3. Make the column sortable

//Add custom column
function my_custom_wp_filter_add_user_lastname_column($columns) {
    $columns[\'user_lastname\'] = \'Last Name\';
    return $columns;
}
add_filter(\'manage_users_columns\', \'my_custom_wp_filter_add_user_lastname_column\');

//Fill in value in custom column
function my_custom_wp_filter_add_user_lastname_column_value( $column_output, $column_name, $user_id ) {
    $user = get_userdata( $user_id );
    if ( \'user_lastname\' == $column_name ) {
        return $user->last_name;
    }
    return $column_output;
}
add_filter(\'manage_users_custom_column\', \'my_custom_wp_filter_add_user_lastname_column_value\', 10, 3);


//Make the column sortable
function my_custom_wp_filter_make_user_lastname_column_sortable( $colums_to_sort ) {
    $colums_to_sort[\'user_lastname\'] = \'last_name\';
    return $colums_to_sort;
}
add_filter(\'manage_users_sortable_columns\', \'my_custom_wp_filter_make_user_lastname_column_sortable\', 10, 1);

默认情况下，Wordpress不允许用户按姓氏排序。请参阅中的“orderby”部分WP_User_Query