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<?php class X { function __invoke($arg) { $this->undefined; } }; (new X)();
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Fatal error: Uncaught ArgumentCountError: Too few arguments to function X::__invoke(), 0 passed in /in/pYZoo on line 9 and exactly 1 expected in /in/pYZoo:4 Stack trace: #0 /in/pYZoo(9): X->__invoke() #1 {main} thrown in /in/pYZoo on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.33
Warning: Missing argument 1 for X::__invoke(), called in /in/pYZoo on line 9 and defined in /in/pYZoo on line 4 Notice: Undefined property: X::$undefined in /in/pYZoo on line 5
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected '(' in /in/pYZoo on line 9
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '(' in /in/pYZoo on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/pYZoo on line 9
Process exited with code 255.

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