3v4l.org

run code in 300+ PHP versions simultaneously
<?php function returnNull(): void {}; $null = returnNull(); var_dump($null);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
NULL
Output for 7.0.0 - 7.0.20
Fatal error: Uncaught TypeError: Return value of returnNull() must be an instance of void, none returned in /in/0kuHL:3 Stack trace: #0 /in/0kuHL(5): returnNull() #1 {main} thrown in /in/0kuHL on line 3
Process exited with code 255.
preferences:
92.1 ms | 407 KiB | 5 Q