在用户配置文件上显示Wordpress用户角色

Question

I need to insert user roles (multiple per user) onto a profile. So far what I have is:

<?php 
    $user_info = get_the_author_meta();
    echo 'Username: ' . $user_info->user_login . "
";
    echo 'User roles: ' . implode(', ', $user_info->roles) . "
";
    echo 'User ID: ' . $user_info->ID . "
";
    echo 'Profile User ID: ' . implode(', ', get_user_meta( $user_id, 'roles' ));
    //echo $authordata;
    //$user = get_userdata($post->post_author);
    echo get_the_author_meta('role');

How do I dynamically pull in user roles?