3v4l.org

run code in 500+ PHP versions simultaneously
<?php interface Foo extends JsonSerializable { public function jsonSerialize(): array; }
Output for 8.0.1 - 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
preferences:
80.36 ms | 1091 KiB | 4 Q