Online PHP editor | refs for hl6Pa

<?php class Singleton{ private static $instance; private function __construct(){} public static function instance() { if (is_null(self::$instance)){ self::$instance = new static; } return self::$instance; } } $obj1 = Singleton::instance(); $obj2 = Singleton::instance(); var_dump(spl_object_hash($obj1), spl_object_hash($obj2));