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<?php class Foo { private function secret() { echo "Can't touch this!"; } public function checkCallable(callable $f): callable { return $f; } } $foo = new Foo; $f = $foo->checkCallable([$foo, 'secret']); $f();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Fatal error: Uncaught Error: Call to private method Foo::secret() from global scope in /in/C7df2:15 Stack trace: #0 {main} thrown in /in/C7df2 on line 15
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Call to private method Foo::secret() from context '' in /in/C7df2:15 Stack trace: #0 {main} thrown in /in/C7df2 on line 15
Process exited with code 255.
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