Description:
------------
When called from an instance function via call_user_func (or call_user_func_array), the late static binding appears to not recognise an explicit call to a parent static function and propagates the caller as the called class rather than the callee.

When called "directly" the late static binding functions correctly.

To reiterate: there is an inconsistency here between the results with P::test() and call_user_func('P::test') in the test script below. My opinion is that this is a bug.

Tested with the script below in PHP 5.3 and PHP 5.4.15.

If this is the expected behaviour ("feature not a bug") then it should be prominently documented (c.f. bug #47402)

Test script:
---------------
abstract class P {
	static public function test() {
		echo get_called_class();
	}
}
class C extends P {
	public static function runStatic() {
		P::test();
		call_user_func('P::test');
		call_user_func(array('P', 'test'));
	}
	public function run() {
		P::test();
		call_user_func('P::test');
		call_user_func(array('P', 'test'));
	}
}
C::runStatic();
$c = new C();
$c->run();


Expected result:
----------------
Console output:
PPPPPP

Actual result:
--------------
Console output:
PPPPCC