Any.php

<?php
class Any implements IteratorAggregate
{
    private $v;
    public function __construct($v)
    {
        $this->v = $v;
    }
    public function __get($name)
    {
        if (array_key_exists($name, $this->v)) {
            if (is_array($this->v[$name])) {
                return new self($this->v[$name]);
            }
            else {
                return $this->v[$name];
            }
        }
        return null;
    }

    public function getIterator()
    {
        foreach ($this->v as $k => $v) {
            yield $k => new self($v);
        }
    }
}