3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function __construct($a, $b) { var_dump($a, $b); } } class Bar extends Foo{ public function __construct($a) { var_dump($a); } } class Baz extends Bar{ public function __construct($a, $b) { Foo::__construct($a, $b); } } $baz = new Baz("foo", "bar");
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
string(3) "foo" string(3) "bar"

preferences:
204.63 ms | 404 KiB | 332 Q