Online PHP editor | refs for 13A9I

<?php $arr = [ 0 => ['ax' => 'Aland Islands'], 1 => ['as' => 'American Samoa'], 2 => ['am' => 'Armenia'] ]; $newArr = array_merge($arr[0], $arr[1], $arr[2]); print_r($newArr); $newArr2 = array_merge(...$arr); print_r($newArr2); foreach ($arr as $item){ $key = array_keys($item)[0]; @$newArr3[$key] = $item[$key]; } print_r($newArr3);