openstamanager/lib/classes/Util/Singleton.php

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<?php
namespace Util;
/**
* @since 2.3
*/
class Singleton
{
/** @var \Util\Singleton Oggetto istanziato */
protected static $instance = null;
protected function __construct()
{
}
/**
* Restituisce l'istanza della classe in oggetto.
*
* @return Singleton
*/
public static function getInstance()
{
if (self::$instance === null) {
self::$instance = new static();
}
return self::$instance;
}
private function __clone()
{
}
private function __wakeup()
{
}
}