note 118017 added to function.array-reduce

The single value returned by array_reduce() can be an array -- as illustrated in the following example: <?php # calculate the average of an array function calculate_sum_and_count($sum_and_count, $item) { list($sum, $count) = $sum_and_count; $sum += $item; $count += 1; return [$sum, $count]; } $a = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); $initial_sum_and_count = [0, 0]; list($sum, $count) = array_reduce($a, "calculate_sum_and_count", $initial_sum_and_count); echo $sum / $count; ?> ---- Server IP: 72.52.91.14 Probable Submitter: 12.218.215.241 ---- Manual Page -- http://php.net/manual/en/function.array-reduce.php Edit -- https://master.php.net/note/edit/118017 Del: integrated -- https://master.php.net/note/delete/118017/integrated Del: useless -- https://master.php.net/note/delete/118017/useless Del: bad code -- https://master.php.net/note/delete/118017/bad+code Del: spam -- https://master.php.net/note/delete/118017/spam Del: non-english -- https://master.php.net/note/delete/118017/non-english Del: in docs -- https://master.php.net/note/delete/118017/in+docs Del: other reasons-- https://master.php.net/note/delete/118017 Reject -- https://master.php.net/note/reject/118017 Search -- https://master.php.net/manage/user-notes.php