Doc #73931 [Com]: Can not rebind closures created from callables ...

Edit report at https://bugs.php.net/bug.php?id=73931&edit=1 ID: 73931 Comment by: php at sunyanzi dot me Reported by: php at sunyanzi dot me Summary: Can not rebind closures created from callables ... Status: Verified Type: Documentation Problem Package: *General Issues Operating System: Debian Jessie PHP Version: 7.1.0 Block user comment: N Private report: N New Comment: As a footnote ... I know I can bind closures created from class method to a subclass ... But is there any other type of class these closures can bind ..? Previous Comments: ------------------------------------------------------------------------ [2017-01-14 18:38:06] php at sunyanzi dot me Thank you for the reply ... However I am still not sure what is a "compatible object" ..? Could you please make an example for which object that closures created from callables can bind ..? I will really appreciate for that ... ------------------------------------------------------------------------ [2017-01-14 11:39:28] nikic@php.net We do not allow rebinding of method closures to incompatible (i.e. not in a subclass relationship) $this objects. ------------------------------------------------------------------------ [2017-01-14 10:15:11] php at sunyanzi dot me Description: ------------ Just see code ... $cl_foo is running correctly but $cl_bar not ... It seems that there's two types of Closure ... same name ... different behavior ... Actually I am not sure this is a bug or not ... get no clue reading the document ... Test script: --------------- <?php $foo = new class { private $in = 'this is foo'; public function func() { echo $this->cc; } }; $bar = new class { private $in = 'this is bar'; }; $cl_foo = Closure::fromCallable([ $foo, 'func' ]); $cl_bar = Closure::bind( $cl_foo, $bar ); Expected result: ---------------- this is bar // or "this is foo" ? Actual result: -------------- Cannot bind method class@anonymous::func() to object of class class@anonymous ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73931&edit=1