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<?php function main() { $callback = function() { return 'foo'; }; echo acceptCallable($callback); echo acceptCallable(['printBar']); } function printBar() { return 'bar'; } function acceptCallable(Callable $callback) { return $callback(); } main();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
foo Fatal error: Uncaught TypeError: acceptCallable(): Argument #1 ($callback) must be of type callable, array given, called in /in/V9WUX on line 10 and defined in /in/V9WUX:18 Stack trace: #0 /in/V9WUX(10): acceptCallable(Array) #1 /in/V9WUX(22): main() #2 {main} thrown in /in/V9WUX on line 18
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
foo Fatal error: Uncaught TypeError: Argument 1 passed to acceptCallable() must be callable, array given, called in /in/V9WUX on line 10 and defined in /in/V9WUX:18 Stack trace: #0 /in/V9WUX(10): acceptCallable(Array) #1 /in/V9WUX(22): main() #2 {main} thrown in /in/V9WUX on line 18
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
foo Catchable fatal error: Argument 1 passed to acceptCallable() must be callable, array given, called in /in/V9WUX on line 10 and defined in /in/V9WUX on line 18
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/V9WUX on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/V9WUX on line 5
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 T_FUNCTION in /in/V9WUX on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/V9WUX on line 5
Process exited with code 255.

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