Description:
------------
if you call a static method with call_user_func in an object, you don't have access to var of the caller object, see code bellow

Reproduce code:
---------------
class myClass {
   var $myVar="hello";
   function staticCall(){
       myClass2::method();
   }
   function calluserCall(){
       call_user_func(array('myClass2','method'));
   }
}
class myClass2{
    function method(){
       echo $this->myVar;
    }
}
$test=new myclass();
$test->staticCall();    //return 'hello'
$test->calluserCall();   //return nothing


Expected result:
----------------
$test->staticCall();    //return 'hello'


$test->calluserCall();   //return nothing