3v4l.org

run code in 300+ PHP versions simultaneously
<?php class TheParent { public static function build(): TheParent { return new static(); } } class Child extends TheParent {} $child = Child::build(); $parent = TheParent::build(); echo get_class($child), "\n"; echo get_class($parent), "\n";
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Child TheParent
preferences:
91.64 ms | 1484 KiB | 4 Q