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run code in 150+ php & hhvm versions
Bugs & Features
<?php $stats = array( array( "totalStatPower" => 4, ), array( "totalStatPower" => 5, "test" => 1, ), array( "totalStatPower" => 10, "test" => 2, ), ); var_dump(array_reduce($stats, function($a, $b) { return array_map(function($v, $k) use ($a) { return $v + isset($a[$k]) ? $a[$k] : 0; }, $b); }, array()));
Output for 7.1.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/EY4b5:18 Stack trace: #0 [internal function]: {closure}(4) #1 /in/EY4b5(20): array_map(Object(Closure), Array) #2 [internal function]: {closure}(Array, Array) #3 /in/EY4b5(22): array_reduce(Array, Object(Closure), Array) #4 {main} thrown in /in/EY4b5 on line 18
Process exited with code 255.
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.0.14
Warning: Missing argument 2 for {closure}() in /in/EY4b5 on line 18 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: Missing argument 2 for {closure}() in /in/EY4b5 on line 18 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: Missing argument 2 for {closure}() in /in/EY4b5 on line 18 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: Missing argument 2 for {closure}() in /in/EY4b5 on line 18 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: Missing argument 2 for {closure}() in /in/EY4b5 on line 18 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined variable: k in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 array(2) { ["totalStatPower"]=> NULL ["test"]=> NULL }
Output for hhvm-3.10.0 - 3.12.0
Warning: __invoke() expects exactly 2 parameters, 1 given in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/EY4b5 on line 19 Notice: Undefined index: in /in/EY4b5 on line 19 array(2) { ["totalStatPower"]=> NULL ["test"]=> NULL }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/EY4b5 on line 17
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_FUNCTION in /in/EY4b5 on line 17
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/EY4b5 on line 17
Process exited with code 255.