3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(): void { return null; }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.28, 8.0.0 - 8.0.17, 8.1.0 - 8.1.4
Fatal error: A void function must not return a value (did you mean "return;" instead of "return null;"?) in /in/1m0Mk on line 3
Process exited with code 255.
preferences:
214.95 ms | 1396 KiB | 126 Q