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<?php class Foo { public function instanceCall() { return $this; } public function test($c) { return array_map($c, [1]); } } $foo = new Foo(); var_dump($foo->test('Foo::instanceCall'));
Output for 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
array(1) { [0]=> object(Foo)#1 (0) { } }

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