CLI script to unpublish classes from samuel taylor web site

coursesexpired.php

<?php
/**
 * @package		Joomla.Cli
 * @copyright	Copyright (C) 2005 - 2019 Open Source Matters, Inc. All rights reserved.
 * @license	GNU General Public License version 2 or later; see LICENSE.txt
 * 
 * CLI script to unpublish classes from samuel taylor web site
 * Put this script in the /cli folder
 * Execute by php <path_to_your_joomla_root>/cli/coursesexpired.php
*/

// Set flag that this is a parent file.
const _JEXEC = 1;

error_reporting(E_ALL | E_NOTICE);
ini_set('display_errors', 1);

// Load system defines
if (file_exists(dirname(__DIR__) . '/defines.php'))
{
	require_once dirname(__DIR__) . '/defines.php';
}

if (!defined('_JDEFINES'))
{
	define('JPATH_BASE', dirname(__DIR__));
	require_once JPATH_BASE . '/includes/defines.php';
}

require_once JPATH_LIBRARIES . '/import.legacy.php';
require_once JPATH_LIBRARIES . '/cms.php';

/**
 * @package  Joomla.CLI
 * @since    3.0
 */
class CoursesExpired extends JApplicationCli
{
	/**
	 * Entry point for CLI script
	 *
	 * @return  void
	 *
	 * @since   3.0
	 */
	public function doExecute()
	{
		// Database connector
		$db = JFactory::getDBO();

	*/
	* Raw query
	* UPDATE #__content
	* INNER JOIN #__fields_values ON #__content.id = #__fields_values.item_id
	* SET #__content.state = "0"
	* WHERE #__fields_values.field_id = "11"
	* AND VALUE <= NOW();
	*/

		// Set SQL query
		$query = "SELECT COUNT(*) from #__users";
		// Execute query
		$db->setQuery($query);
	}
}

// Instantiate the application object, passing the class name to JCli::getInstance
// and use chaining to execute the application.
JApplicationCli::getInstance('CoursesExpired')->execute();