3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Command { protected function configure() {} } abstract class TypedCommand { protected function configure(): void {} } class MyCommand extends Command { protected function configure(): void {} } class MyTypedCommand extends TypedCommand { protected function configure(): void {} }
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14

preferences:
55.7 ms | 406 KiB | 5 Q