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<?php class Mapper { function __invoke($r) { print_r($r); } function d(\Closure $s) { $s(2); } } $m = new Mapper(); $m(1); $m->d($m);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
1 Fatal error: Uncaught TypeError: Mapper::d(): Argument #1 ($s) must be of type Closure, Mapper given, called in /in/77GWV on line 20 and defined in /in/77GWV:10 Stack trace: #0 /in/77GWV(20): Mapper->d(Object(Mapper)) #1 {main} thrown in /in/77GWV on line 10
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
1 Fatal error: Uncaught TypeError: Argument 1 passed to Mapper::d() must be an instance of Closure, instance of Mapper given, called in /in/77GWV on line 20 and defined in /in/77GWV:10 Stack trace: #0 /in/77GWV(20): Mapper->d(Object(Mapper)) #1 {main} thrown in /in/77GWV on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
1 Catchable fatal error: Argument 1 passed to Mapper::d() must be an instance of Closure, instance of Mapper given, called in /in/77GWV on line 20 and defined in /in/77GWV on line 10
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/77GWV on line 10 Fatal error: Function name must be a string in /in/77GWV on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/77GWV on line 10 Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/77GWV on line 10
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
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/77GWV on line 10 Parse error: parse error, unexpected T_STRING, expecting ')' in /in/77GWV on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/77GWV on line 10 Parse error: parse error, expecting `')'' in /in/77GWV on line 10
Process exited with code 255.

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