Description:
------------
call_user_func() does not propagate the scope when used in calls between two classes that have no child-parent relation. When they have child-parent relation as described in this bug entry: http://bugs.php.net/bug.php?id=47402 it is fine.

As it is put in the "Backward Incompatible Changes" here:
http://www.php.net/manual/en/migration53.incompatible.php
"The call_user_func() family of functions now propagate $this even if the callee is a parent class. ". I guess it has to do it for classes that have no relation as well (or if not so the direct call t2::some_method() should not do it either). As it is at the moment is inconsistent.

P.S. As well I think a better explanation with an example in the docs should be added for "The call_user_func() family of functions now propagate $this even if the callee is a parent class.". It is not clear at all what it is about if one don't get onto the original bug entry: "http://bugs.php.net/bug.php?id=47402".
I didnt use the original 47402 entry as in fact it is not a bug.

Test script:
---------------
class t1
{
	public function __call($method,$args) {
		//call_user_func('t2::some_method',$args);//for PHP 5.3
		call_user_func(array('t2','some_method'),$args);
		t2::some_method();
	}
	
	public function existing_method() {
		//call_user_func('t2::some_method');//for PHP 5.3
		call_user_func(array('t2','some_method'));
		t2::some_method();
	}
}

class t2
{
	public function some_method() {
		print isset($this)?'yes':'no';
		print PHP_EOL;
	}
}

$t1 = new t1;

$t1->existing_method();
$t1->non_existing_method();//use overloading

Expected result:
----------------
yes
yes
yes
yes


Actual result:
--------------
no
yes
no
yes