3v4l.org

run code in 300+ PHP versions simultaneously
<?php $devsummit = ["Collect", "Knowledge", "Inspire", Future];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Uncaught Error: Undefined constant "Future" in /in/dVKnQ:3 Stack trace: #0 {main} thrown in /in/dVKnQ on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant Future - assumed 'Future' (this will throw an Error in a future version of PHP) in /in/dVKnQ on line 3

preferences:
162.28 ms | 408 KiB | 5 Q