Description:
------------
The get_class_vars() function doesn't work correctly when 
the class contains an array. 
 

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

class ClassA {
    var $var=array();
}

$var=get_class_vars('ClassA');
var_dump($var);


Expected result:
----------------
array(1) { 
  ["var"]=> 
  array(0) { 
  } 
} 
 

Actual result:
--------------
array(1) { 
  ["var"]=> 
  UNKNOWN:0 
}