<?php
$a = new FileSystemIterator(__DIR__);
$b = new ArrayObject(['a' => 1]);
$c = new SplStack;
PD9waHAKCiRhID0gbmV3IEZpbGVTeXN0ZW1JdGVyYXRvcihfX0RJUl9fKTsKJGIgPSBuZXcgQXJyYXlPYmplY3QoWydhJyA9PiAxXSk7CiRjID0gbmV3IFNwbFN0YWNrOwoKCnZhcl9kdW1wKCRhIGluc3RhbmNlb2YgVHJhdmVyc2FibGUpOwp2YXJfZHVtcCgkYiBpbnN0YW5jZW9mIFRyYXZlcnNhYmxlKTsKdmFyX2R1bXAoJGMgaW5zdGFuY2VvZiBUcmF2ZXJzYWJsZSk7