- Output for 8.1.0 - 8.1.34
- Fatal error: Null can not be used as a standalone type in /in/5UR5A on line 3
- Output for 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
- NULL Fatal error: Uncaught TypeError: foo(): Argument #1 ($a) must be of type null, int given, called in /in/5UR5A on line 6 and defined in /in/5UR5A:3 Stack trace: #0 /in/5UR5A(6): foo(42) #1 {main} thrown in /in/5UR5A on line 3