WordPress Cleanup hooks

wordpress-cleanup.php

<?php
/**
 * Plugin Name: Wordpress Cleanup
 */

namespace WordPress_Cleanup;

/**
 * Change filters here to control what this does
 */
add_action('init',                       __NAMESPACE__ . '\remove_unused_header_items');
add_filter('post_comments_feed_link',    __NAMESPACE__ . '\remove_comment_feeds');
add_action('login_enqueue_scripts',      __NAMESPACE__ . '\remove_wordpress_logo_from_login');
add_filter('show_admin_bar',             __NAMESPACE__ . '\remove_admin_toolbar');
add_action('init',                       __NAMESPACE__ . '\disable_emoticons');
add_filter('tiny_mce_plugins',           __NAMESPACE__ . '\disable_tinymce_emoticons');
add_action('admin_init',                 __NAMESPACE__ . '\remove_dashboard_items');
add_filter('admin_footer_text',          __NAMESPACE__ . '\remove_built_with_from_footer', 9999);
add_filter('update_footer',              __NAMESPACE__ . '\remove_wordpress_version_from_footer', 9999);
add_filter('login_errors',               __NAMESPACE__ . '\generic_login_error');
add_filter('screen_options_show_screen', __NAMESPACE__ . '\screen_options_capability');
add_action('admin_head',                 __NAMESPACE__ . '\remove_help');
add_filter('wp_headers',                 __NAMESPACE__ . '\remove_pingback_headers');

/* Remove welcome box */
remove_action('welcome_panel', 'wp_welcome_panel');

/* Disable all automatic core updates */
//add_filter('automatic_updater_disabled', '__return_true');

/* Disable all core updates */
//add_filter('auto_update_core', '__return_false');

/* Disable automatic plugin updates */
add_filter('auto_update_plugin', '__return_false');
/* Disable automatic theme updates */
add_filter('auto_update_theme', '__return_false');

/* Remove XMLRPC */
add_filter('wp_xmlrpc_server_class', '__return_false');
add_filter('xmlrpc_enabled', '__return_false');

/**
 * Disable indexing (requires phpdotenv)
 */
if(function_exists('getenv')) {
  if(getenv('WP_ENV') !== 'production' && !is_admin()) {
	  add_action('pre_option_blog_public', '__return_zero');
  }
}


/**
 * Remove unused header items
 */
function remove_unused_header_items() {

	$actions = array(
		'feed_links_extra',
		'wp_generator',
		'rsd_link',
		'wlwmanifest_link',
		'rest_output_link_wp_head',
		'wp_oembed_add_discovery_links',
		'wp_oembed_add_host_js'
	);

	foreach($actions as $action) {

		remove_action('wp_head', $action);

	}

}

/**
 * Remove comment feeds
 */           
function remove_comment_feeds() {

	return null;

}

/**
 * Remove Wordpress logo from login
 */
add_action('login_enqueue_scripts', 
           
function remove_wordpress_logo_from_login() { ?>

	<style>
		.login h1 a {
			background-image: none;
		}
	</style>

<?php }

/**
 * Remove the admin tool bar
 */
function remove_admin_toolbar() {
  return false;
}

/**
 * Disable emoticons
 */
function disable_emoticons() {

	remove_action('admin_print_styles', 'print_emoji_styles');
	remove_action('wp_head', 'print_emoji_detection_script', 7);
	remove_action('admin_print_scripts', 'print_emoji_detection_script');
	remove_action('wp_print_styles', 'print_emoji_styles');
	remove_filter('wp_mail', 'wp_staticize_emoji_for_email');
	remove_filter('the_content_feed', 'wp_staticize_emoji');
	remove_filter('comment_text_rss', 'wp_staticize_emoji');

}

/**
 * Disable TinyMCE emoticons
 */        
function disable_tinymce_emoticons($plugins) {

	if (is_array($plugins)) {

		return array_diff($plugins, array('wpemoji'));

	} else {

		return array();

	}

}

/**
 * Remove dashboard items
 */
function remove_dashboard_items() {

	remove_meta_box('dashboard_incoming_links', 'dashboard', 'normal');
	remove_meta_box('dashboard_plugins', 'dashboard', 'normal');
	remove_meta_box('dashboard_primary', 'dashboard', 'normal');
	remove_meta_box('dashboard_secondary', 'dashboard', 'normal');
	remove_meta_box('dashboard_incoming_links', 'dashboard', 'normal');
	remove_meta_box('dashboard_quick_press', 'dashboard', 'side');
	remove_meta_box('dashboard_recent_drafts', 'dashboard', 'side');
	remove_meta_box('dashboard_recent_comments', 'dashboard', 'normal');
	//remove_meta_box('dashboard_right_now', 'dashboard', 'normal');
	//remove_meta_box('dashboard_activity', 'dashboard', 'normal');

}

/**
 * Remove built with message from admin footer
 */        
function remove_built_with_from_footer() {

	return '&nbsp;';

}

/**
 * Remove Wordpress version from admin footer
 */
function remove_wordpress_version_from_footer() {

	return ' ';

}

/**
 * Make the Wordpress login error more generic to help prevent people brute forcing
 */
function generic_login_error() {

	return __('Username/Password is incorrect');

}

/**
 * Remove screen options for non-admins
 */
function screen_options_capability() {

	return current_user_can('manage_options');

}

/**
 * Remove help section from all pages
 */
function remove_help() {

	$screen = get_current_screen();
	$screen->remove_help_tabs();

}

/**
 * Remove X-Pingback headers
 */
function remove_pingback_headers($headers) {

	unset($headers['X-Pingback']);

	return $headers;

}