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run code in 150+ php & hhvm versions
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<?php trait Stuff { function __invoke() { return 'I am ' . get_class($this) . '.'; } } class Thing { function __invoke() { return 'I am Thing.'; } } class Thang { use Stuff; } $things[] = function () { return 'I am Thong.'; }; $things[] = new Thing; $things[] = new Thang; $things[] = 'strlen'; $things[] = [$things[0], '__invoke']; $things[] = [$things[1], '__invoke']; var_dump(array_map('is_callable'), $things);
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: array_map() expects at least 2 parameters, 1 given in /in/mjCEp on line 13 NULL array(6) { [0]=> object(Closure)#1 (0) { } [1]=> object(Thing)#2 (0) { } [2]=> object(Thang)#3 (0) { } [3]=> string(6) "strlen" [4]=> array(2) { [0]=> object(Closure)#1 (0) { } [1]=> string(8) "__invoke" } [5]=> array(2) { [0]=> object(Thing)#2 (0) { } [1]=> string(8) "__invoke" } }
Output for hhvm-3.12.0
Warning: array_map() expects at least 2 parameters, 1 given in /in/mjCEp on line -1 NULL array(6) { [0]=> object(Closure$__invoke;1901568313$121270907750fc35cba7442ee3516d53$)#1 (0) { } [1]=> object(Thing)#2 (0) { } [2]=> object(Thang)#3 (0) { } [3]=> string(6) "strlen" [4]=> array(2) { [0]=> object(Closure$__invoke;1901568313$121270907750fc35cba7442ee3516d53$)#1 (0) { } [1]=> string(8) "__invoke" } [5]=> array(2) { [0]=> object(Thing)#2 (0) { } [1]=> string(8) "__invoke" } }
Output for hhvm-3.10.0
Warning: array_map() expects at least 2 parameters, 1 given in /in/mjCEp on line -1 NULL array(6) { [0]=> object(Closure$__invoke;1901568313$2153598e386cd4977d995d5468d6d9e6$)#1 (0) { } [1]=> object(Thing)#2 (0) { } [2]=> object(Thang)#3 (0) { } [3]=> string(6) "strlen" [4]=> array(2) { [0]=> object(Closure$__invoke;1901568313$2153598e386cd4977d995d5468d6d9e6$)#1 (0) { } [1]=> string(8) "__invoke" } [5]=> array(2) { [0]=> object(Thing)#2 (0) { } [1]=> string(8) "__invoke" } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/mjCEp on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/mjCEp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/mjCEp on line 3
Process exited with code 255.