How to hide WordPress Admin bar for all/non-admin users

wp-codesnippet-hide-wordpress-admin-bar.php

<?php
//below code snippet is to be added to WordPress theme functions.php file

//option 1: remove the WordPress admin bar for all users
add_filter('show_admin_bar', '__return_false');

//option 2: hide the WordPress admin for everyone except users with administrator privileges
add_action('after_setup_theme', 'remove_admin_bar');

function remove_admin_bar() {
  if (!current_user_can('administrator') && !is_admin()) {
    show_admin_bar(false);
  }
}