note 98685 added to function.array-intersect

Here's my approach to intersection returning only the values present in all the arrays. Note that each array must not contain duplicate values. I don't know how effective it actually is, but perhaps it could help. <?php // $arrays - Array of arrays to intersect. function calculate_intersection($arrays) { $intersection = Array(); for($checked_item = 0; $checked_item < count($arrays[0]); $checked_item++) { $occurrence = 1; for($compared_array = 1; $compared_array < count($arrays); $compared_array++) { for($compared_item = 0; $compared_item < count($arrays[$compared_array]); $compared_item++) { if($arrays[0][$checked_item] == $arrays[$compared_array][$compared_item]) { $occurrence++; if($occurrence == count($arrays)) { $intersection[] = $arrays[0][$checked_item]; } } } } } return $intersection; } ?> ---- Server IP: 147.32.160.17 Probable Submitter: 213.192.26.250 ---- Manual Page -- http://www.php.net/manual/en/function.array-intersect.php Edit -- https://master.php.net/note/edit/98685 Del: integrated -- https://master.php.net/note/delete/98685/integrated Del: useless -- https://master.php.net/note/delete/98685/useless Del: bad code -- https://master.php.net/note/delete/98685/bad+code Del: spam -- https://master.php.net/note/delete/98685/spam Del: non-english -- https://master.php.net/note/delete/98685/non-english Del: in docs -- https://master.php.net/note/delete/98685/in+docs Del: other reasons-- https://master.php.net/note/delete/98685 Reject -- https://master.php.net/note/reject/98685 Search -- https://master.php.net/manage/user-notes.php