3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); class Message {} class Message {}
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Cannot declare class Message, because the name is already in use in /in/fZjSA on line 8
Process exited with code 255.
preferences:
164.91 ms | 403 KiB | 157 Q