Description:
------------
In a class, if instance this same class inside, the method __get() does not is called.

Reproduce code:
---------------
class class_test {

	private $sub_classes = array();
	private $foo = "bar"; // Default value

	public function __construct($n = 0)
	{
		for($i = 0; $i < $n; $i++) {
			$this->sub_classes[] = new class_test(); // New "sub" instaces
		}
		if($n > 0) {
			$this->foo = $n; // Change the default value on main instace
		}
	}

	public function __get($name)
	{
		switch($name) {
			case 'foo':
				return '__get("foo") = '.$this->foo; // Getting the variable, changing the value
			break;

			case 'subs':
				$subs = '$this->foo = '.$this->foo."\n"; // Value of var on main instace
				foreach($this->sub_classes as $key => $sub_class) {
					$subs.= "\$this->sub_classes[$key]->foo = ".$this->sub_classes[$key]->foo."\n"; // The value of variable on each "sub" instace
				}
				return $subs;
			break;
		}

		return false;
	}
}

$test = new class_test(2); // Create the main instace, with 2 "sub" instaces

echo $test->subs; // Show the variables

Expected result:
----------------
$this->foo = 2
$this->sub_classes[0]->foo = __get("foo") = bar
$this->sub_classes[1]->foo = __get("foo") = bar


Actual result:
--------------
$this->foo = 2
$this->sub_classes[0]->foo = bar
$this->sub_classes[1]->foo = bar