Description:
------------
Accessing $this->values['foo']['bar']['2'] does not work like expected inside a class while accessing $values['foo']['bar']['2'] does work like expected.. It's a little hard to explain so I'll just let the code speak for itself:

Reproduce code:
---------------
$values = array(
	'foo' => array(
		'bar' => array(
			'2' => 'whatever'
		)
	)
);

var_dump($values['foo']['bar']['2']); // This works as expected

class MyClass
{
	var $values = array(
		'foo' => array(
			'bar' => array(
				'2' => 'whatever'
			)
		)
	);

	function __construct()
	{
		var_dump($this->values['foo']['bar']['2']); // This doesn't...
		var_dump($this->values['foo']['bar'][2]); // This doesn't either...
	}
}

$c = new MyClass;

Expected result:
----------------
string(8) "whatever"
string(8) "whatever" 
string(8) "whatever" 

Actual result:
--------------
string(8) "whatever" 
Notice: Undefined offset: 2 in myfile.php on line 25
NULL 
Notice: Undefined offset: 2 in myfile.php on line 26
NULL