Online PHP editor | refs for NXhXlh

<?php $arr = [ ["year" => 1921, "name" => "bob"], ["year" => 1944, "name" => "steve"], ["year" => 1944, "name" => "doug"], ["year" => 1921, "name" => "jim"], ]; foreach ($arr as $item) { $result[$item['year']]['year'] = $item['year']; $result[$item['year']]['names'][] = ['name' => $item['name']]; } echo json_encode(['data' => array_values($result)], JSON_PRETTY_PRINT);