Description:
------------
I suppose that the result is unexpected.

Reproduce code:
---------------
<?php

class foo {
    public $test1 = 1;
    private $test2 = 2;
    protected $test3 = 3;
    
    public function __construct()
    {
        while (list($key, $value) = each($this)) {
            print $key . ' => '. $value ."\n";
        }
    }
}

new foo;


Expected result:
----------------
test1 => 1
test2 => 2
test3 => 3

Actual result:
--------------
test1 => 1
footest2 => 2
*test3 => 3