3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { const X = [1,2,3,4]; }
Output for 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Fatal error: Arrays are not allowed in class constants in /in/Hjm06 on line 5
Process exited with code 255.
preferences:
144.2 ms | 402 KiB | 231 Q