[php-src] Issue #11271: Closure::bindTo Throwable instead of warning when passing object other class

Issue: https://github.com/php/php-src/issues/11271 Author: LordFireen ### Description ### Description: Currently, when binding a new object to Closure, which is an object of a different class, a "warning" is logged in the log, but the method itself has no effect, which can be confusing. It seems to me better to add Throwable in such a scenario, it will make it easier to handle the case. ### The following code: ```php <?php class SomeClass { public function testMethod() { echo 123; } } class OtherClass { public function testMethod() { echo 234; } } $a = new SomeClass(); $b = new OtherClass(); $closure = Closure::fromCallable([$a, 'testMethod']); try { $closure->bindTo($b); } catch (Throwable $e) { echo 'Oh, sorry u cannot do it!'; return; } $closure(); ``` ### Resulted: ``` Warning: Cannot bind method SomeClass::testMethod() to object of class OtherClass in /in/VgKd4 on line 23 123 ``` ### Expected: ``` Oh, sorry u cannot do it! ``` As it stands, to be able to handle such a scenario you need to use Reflection as follows: ```php $reflection = new ReflectionFunction($closure); $oldThis = $reflection->getClosureThis(); if ($oldThis && $oldThis::class === $b::class) { $closure->bindTo($b); } else { echo 'Oh, sorry u cannot do it!'; } ``` Of course, this code can be simplified, but a simple try/catch is a much better solution. Especially since I assume that the parser will check again if the object is of the same class when executes bindTo() ### PHP Version PHP 8.2.6 ### Operating System Linux