3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Null { }
Output for 7.0.0 - 7.0.27, 7.1.0 - 7.1.15, 7.2.0 - 7.2.3
Fatal error: Cannot use 'Null' as class name as it is reserved in /in/jN880 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30
preferences:
256.77 ms | 1396 KiB | 199 Q