note 109320 added to function.array-reduce

If you want something elegant in your code, when dealing with reducing array, just unshift first element, and use it as initial, because if you do not do so, you will + first element with first element: $arr = array( array('min' => 1.5456, 'max' => 2.28548, 'volume' => 23.152), array('min' => 1.5457, 'max' => 2.28549, 'volume' => 23.152), array('min' => 1.5458, 'max' => 2.28550, 'volume' => 23.152), array('min' => 1.5459, 'max' => 2.28551, 'volume' => 23.152), array('min' => 1.5460, 'max' => 2.28552, 'volume' => 23.152), ); $initial = array_shift($arr); $t = array_reduce($arr, function($result, $item) { $result['min'] = min($result['min'], $item['min']); $result['max'] = max($result['max'], $item['max']); $result['volume'] += $item['volume']; return $result; }, $initial); ---- Server IP: 62.2.182.223 Probable Submitter: 194.8.15.14 ---- Manual Page -- http://www.php.net/manual/en/function.array-reduce.php Edit -- https://master.php.net/note/edit/109320 Del: integrated -- https://master.php.net/note/delete/109320/integrated Del: useless -- https://master.php.net/note/delete/109320/useless Del: bad code -- https://master.php.net/note/delete/109320/bad+code Del: spam -- https://master.php.net/note/delete/109320/spam Del: non-english -- https://master.php.net/note/delete/109320/non-english Del: in docs -- https://master.php.net/note/delete/109320/in+docs Del: other reasons-- https://master.php.net/note/delete/109320 Reject -- https://master.php.net/note/reject/109320 Search -- https://master.php.net/manage/user-notes.php