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I try to pass a key of an array in parameter in my function like that

function getStats($array , $key){ $data = array_sum(array_map(function($item) { return $item[$key]; }, $array)); return $data; } $stats = getStats($myarray , 'nb_view');

It doesn't work but this works

function getStats($array){ $data = array_sum(array_map(function($item) { return $item['nb_view']; }, $array)); return $data; } $stats = getStats($array);
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  • please post array over here: Commented Jun 10, 2016 at 9:41

1 Answer 1

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When defining your anonymous function, the use keyword allows you to inherit variables from the parent scope.

function getStats($array , $key){ $data = array_sum(array_map(function($item) use($key) { return $item[$key]; }, $array)); return $data; }
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