Online PHP editor | output for WHUW7

<?php $Arr1=[ ["id" => "4123", "test_number" => "1", "sat_total" => "1050"], ["id" => "4123", "test_number" => "2", "sat_total" => "1130"], ["id" => "4123", "test_number" => "3", "sat_total" => "1120"], ["id" => "5555", "test_number" => "1", "sat_total" => "1130"], ["id" => "5555", "test_number" => "2", "sat_total" => "1160"] ]; foreach ($Arr1 as $set) { if (!isset($result[$set['id']])) { $result[$set['id']] = ['id' => $set['id'], 'Score1' => $set['sat_total']]; } else { $result[$set['id']]['Score' . sizeof($result[$set['id']])] = $set['sat_total']; } } var_export(array_values($result));