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Bug #64914 get_called_class incorrect after call_user_func to a parent static function
Submitted: 2013-05-24 08:15 UTC Modified: -
Votes:1
Avg. Score:4.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (100.0%)
From: e dot nash at dvz-mv dot de Assigned:
Status: Open Package: Class/Object related
PHP Version: 5.4.15 OS: Win/Linux
Private report: No CVE-ID: None
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 [2013-05-24 08:15 UTC] e dot nash at dvz-mv dot de
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

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 [2013-05-24 09:24 UTC] e dot nash at dvz-mv dot de
Forgot to add:
static::test() in both runStatic() and run() produces the output C, as would be expected through the LSB.
 [2018-07-11 20:10 UTC] dev at mike dot pp dot ua
Still not fixed in PHP 7.2.7-1+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Jun 22 2018 08:45:49) ( NTS ).

Seems like the call_user_func() (and call_user_func_array()) works the same way as the forward_static_call().
 
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