Online PHP editor | refs for rhofk

<?php class Singleton { private static $instanciated = false; public function __construct() { if (self::$instanciated === true) { throw new RuntimeException('Could not instanciate class'); } self::$instanciated = true; } private $var; public function get(): int { return $this->var; } public function set(int $value) { $this->var = $value; } } class Factory { private $instance = null; public function getInstance() { if ($this->instance === null) { $this->instance = new Singleton(); } return $this->instance; } } $factory = new Factory(); $o = $factory->getInstance(); $o->set(5); $factory2 = new Factory(); $o2 = $factory->getInstance(); var_dump($o2->get());