Description:
------------
a call to get_class_vars from within the class includes private members,
but get_object_vars does not

this bug report:

http://bugs.php.net/bug.php?id=27798&edit=2

says that this was fixed about a year ago.

Reproduce code:
---------------
<?
class SomeClass implements Serializable
{
    private $member;
    public $another;

    function SomeClass()
    {
        $this->member = 'member value';
        $this->another = 'another value';
    }

    public function serialize()
    {
        print_r(get_class_vars(__CLASS__));
        print_r(get_object_vars($this));
    }

    public function unserialize($serialized)
    {
    }
}

class AnotherClass extends SomeClass
{
    function AnotherClass()
    {
        $this->SomeClass();
    }
}

$obj = new AnotherClass();
serialize($obj);
?>

Expected result:
----------------
i would expect to see:

Array
(
    [member] =>
    [another] =>
)
Array
(
    [member] => member value
    [another] => another value
)

Actual result:
--------------
Array
(
    [member] =>
    [another] =>
)
Array
(
    [another] => another value
)

i have been able to work around this problem by doing:
public function serialize()
{
    $serialized = array();

    foreach(array_keys(get_class_vars(__CLASS__)) as $key)
        eval('$serialized[\''.$key.'\'] =        
                                       $this->'.$key.';');
    $this->serializeMore($serialized);
    return serialize($serialized);
}

Please try using this CVS snapshot:

  http://snaps.php.net/php5.1-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.1-win32-latest.zip

Cannot reproduce.

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

I'm experiencing this same problem, running PHP on Windows with both
Apache and IIS. Here's the code:

<?php
class TestClass {
	private $var1 = "private";
	protected $var2 = "protected";
	public $var3 = "public";
}

$o = new TestClass();
foreach(array_keys(get_object_vars($o)) as $key)
	echo $key;
?>

I'd expect to see 3 values outputted but only one comes back.

Forgot to say, I'm running PHP 5.1.2

That's correct behavior, since you're calling it outside of the object
scope.