3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait Foo { public function __construct() { echo 'Foo'; parent::__construct(); } } class Bar { public function __construct() { echo 'Bar'; } } class Baz extends Bar { use Foo; } new Baz;
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 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
FooBar

preferences:
149.73 ms | 404 KiB | 183 Q