note 119777 added to function.array-walk

Since array_walk cannot modify / change / reindex keys as already mentioned, i provide this small wrapping function which accomplishes passing array reference and index using closures , "use" keyword. function indexArrayByElement($array, $element) { $arrayReindexed = []; array_walk( $array, function ($item, $key) use (&$arrayReindexed, $element) { $arrayReindexed[$item[$element]] = $item; } ); return $arrayReindexed; } ---- Server IP: 72.52.91.14 Probable Submitter: 195.168.175.2 ---- Manual Page -- http://php.net/manual/en/function.array-walk.php Edit -- https://master.php.net/note/edit/119777 Del: integrated -- https://master.php.net/note/delete/119777/integrated Del: useless -- https://master.php.net/note/delete/119777/useless Del: bad code -- https://master.php.net/note/delete/119777/bad+code Del: spam -- https://master.php.net/note/delete/119777/spam Del: non-english -- https://master.php.net/note/delete/119777/non-english Del: in docs -- https://master.php.net/note/delete/119777/in+docs Del: other reasons-- https://master.php.net/note/delete/119777 Reject -- https://master.php.net/note/reject/119777 Search -- https://master.php.net/manage/user-notes.php