Online PHP editor | refs for 9F0j9

<?php $arr = [ [ "id" => 15710, "sale_id" => 6699, "item_id" => 300 ], [ "id" => 15711, "sale_id" => 6699, "item_id" => 300 ], [ "id" => 15712, "sale_id" => 6699, "item_id" => 200 ], [ "id" => 15713, "sale_id" => 6699, "item_id" => 100 ], [ "id" => 15714, "sale_id" => 6699, "item_id" => 200 ], [ "id" => 15715, "sale_id" => 6699, "item_id" => 300 ] ]; $newArr = []; foreach(array_reverse($arr) as $v) { $newArr[$v['item_id']] = $v; } $newArr = array_values($newArr); print_r($newArr);