- var_dump: documentation ( source)
<?php
$array = [
['id' => 1, 'title' => '1', 'level' => ['id' => 1], 'status' => ['id' => 1]],
['id' => 2, 'title' => '2', 'level' => ['id' => 2], 'status' => ['id' => 2]]
];
foreach($array as $id => $content) {
$array[$id]['level'] = $content['level']['id'];
$array[$id]['status'] = $content['status']['id'];
}
var_dump($array);