Removes the adminbar on the frontend - a small plugin for a demo about creating plugins

adminbar-remover.php

<?php
/**
 * Plugin Name: Adminbar Remover
 * Description: Removes the adminbar on the frontend
 * Plugin URI:  https://wpmeetup-hamburg.de
 * Version:     1.0.0
 * Author:      Torsten Landsiedel / WP Meetup Hamburg
 * Author URI:  https://torstenlandsiedel.de
 * License:     GPL 2
 * License URI: http://opensource.org/licenses/GPL-2.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * Remove adminbar
 */
add_filter( 'show_admin_bar', '__return_false' );