[WordPress] Automatic Background Updates for WordPress core, plugins and themes.

wp-auto-update.php

<?php
/**
 * WordPress Automatic Background Updates
 *
 * @link http://codex.wordpress.org/Configuring_Automatic_Background_Updates
 * @link http://www.sitepoint.com/a-guide-to-updating-wordpress/
 */

// disable automatic updates
add_filter( 'automatic_updater_disabled', '__return_true' );

// disable automatic minor updates
add_filter( 'allow_minor_auto_core_updates', '__return_false' );

// enable automatic major updates
add_filter( 'allow_major_auto_core_updates', '__return_true' );

// enable development updates
add_filter( 'allow_dev_auto_core_updates', '__return_true' );

// enable automatic updates for plugins
add_filter( 'auto_update_plugin', '__return_true' );

// enable automatic updates for themes
add_filter( 'auto_update_theme', '__return_true' );