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<?php class Foo { private $bar = __CLASS__; } class Bar extends Foo { private $bar = __CLASS__; } var_dump(Closure::bind(function (Foo $foo) : array { return get_object_vars($foo); }, null, Foo::class)(new Bar)); var_dump(Closure::bind(function (Foo $foo) : array { return get_object_vars($foo); }, null, Bar::class)(new Bar));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(1) { ["bar"]=> string(3) "Foo" } array(1) { ["bar"]=> string(3) "Bar" }
Output for 5.6.0 - 5.6.26
Parse error: syntax error, unexpected ':', expecting '{' in /in/XIJcS on line 13
Process exited with code 255.

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