3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { } $bar = new stdClass(); $bar->baz = 'Foo'; $qux = new $bar->baz(); var_dump($qux);
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 7.1.0 - 7.1.24, 7.2.0 - 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 - 8.2.18, 8.3.0 - 8.3.6
object(Foo)#2 (0) { }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(foo)(0) { }

preferences:
266.27 ms | 402 KiB | 418 Q