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run code in 150+ php & hhvm versions
Bugs & Features
<?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 7.0.0 - 7.1.0
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 hhvm-3.12.0
1 Catchable fatal error: Argument 1 passed to Mapper::d() must be an instance of Closure, Mapper given in /in/77GWV on line 13
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 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 - 5.2.17
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 - 4.4.1
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.