Mine

~$ more hide.php<?phpclass Foo {        private $data = array('Foo'=>array('Bar'=>'Quux'));        function Foo() {                echo $this->data['Foo']['Bar'];        }}$f = new Foo();Foo::$data['Foo']['Bar'];?>~$ php hide.phpQuuxFatal error: Cannot access private property Foo::$data in /home/vinko/hide.php on line 9