Online PHP editor | refs for VSf6k

<?php class Item { private $id; public function __construct(int $id) { $this->id = $id; } public function id() : int { return $this->id; } } class Collection extends ArrayIterator { public function current() : Item { return parent::current(); } } $items = []; for ($i=0; $i<10; $i++) { $items[] = new Item($i); } $collection = new Collection($items); foreach ($collection as $item) { printf("\tClass: %s. Calling id() method returns %d (%s)\n", get_class($item), $item->id(), gettype($item->id())); }