Online PHP editor | output for UIjFM

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `')'' in /in/UIjFM on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/UIjFM on line 8
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/UIjFM on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/UIjFM on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting ')' in /in/UIjFM on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Catchable fatal error: Argument 1 passed to foo() must be an instance of callable, instance of Closure given, called in /in/UIjFM on line 8 and defined in /in/UIjFM on line 3
Process exited with code 255.
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11: Deprecated: foo(): Implicitly marking parameter $bar as nullable is deprecated, the explicit nullable type must be used instead in /in/UIjFM on line 3