3v4l.org

run code in 300+ PHP versions simultaneously
<?php #️⃣ This is a valid comment echo 'Hello world';
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Hello world

preferences:
61.23 ms | 406 KiB | 5 Q