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run code in 300+ PHP versions simultaneously
<?php class Foo { public static function test($bar = null) { var_dump(func_get_args()); } } class Baz extends Foo { public static function test() { parent::test(); } } Baz::test();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of Baz::test() must be compatible with Foo::test($bar = null) in /in/kBjdX on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of Baz::test() should be compatible with Foo::test($bar = NULL) in /in/kBjdX on line 10 array(0) { }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of Baz::test() should be compatible with Foo::test($bar = NULL) in /in/kBjdX on line 13 array(0) { }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Strict Standards: Declaration of Baz::test() should be compatible with Foo::test($bar = NULL) in /in/kBjdX on line 13 array(0) { }

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