3v4l.org

run code in 300+ PHP versions simultaneously
<?php final class C { public $p; } function slow($x) { echo $x->p; } function fast(C $x) { echo $x->p; } slow(new C()); fast(new C());
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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.14

preferences:
171.45 ms | 408 KiB | 5 Q