Online PHP editor | refs for VXI5E

<?php $arr= [ ['attr_id' => 1,'name' => 'qty','value' =>'100'], ['attr_id' => 1,'name'=>'qty','value'=>'200'], ['attr_id'=>1,'name'=>'qty','value'=>'500'], ['attr_id'=>2,'name'=>'price','value'=>'10$']]; $value = array_column($arr, 'value'); $id = array_column($arr, 'attr_id'); $res =[]; Foreach($id as $key => $i){ If(!isset($res[$i])) $res[$i] = ['attr_id' => $i, 'name'=>'qty', 'value' => []]; $res[$i]['value'][] = $value[$key]; } Var_dump($res);