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<?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 git.master, git.master_jit, rfc.property-hooks
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(18): array_map(Object(Closure), Array) #2 [internal function]: {closure}(Array, Array) #3 /in/EY4b5(17): array_reduce(Array, Object(Closure), Array) #4 {main} thrown in /in/EY4b5 on line 18
Process exited with code 255.

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