note 49463 deleted from language.oop5.patterns by curt

Note Submitter: me at timvw dot info ---- If you are going to implement the Singleton Pattern you don't want to forget the magic __clone method. class Singleton { private static $singleton; private function __construct() { echo "inside constructor method."; } public static function getInstance() { if (self::$singleton == null) { self::$singleton = new Singleton; } return self::$singleton; } public function __clone() { trigger_error('Clone is not allowed.', E_USER_ERROR); } } $instance1 = Singleton::getInstance(); $instance2 = Singleton::getIntance(); $instance3 = clone($instance1);