- var_dump: documentation ( source)
- array_column: documentation ( source)
- implode: documentation ( source)
<?php
$array = [
[
'name' => 'Hello',
],
[
'name' => 'World',
]
];
$new = [
'name' => implode(' / ', array_column($array, 'name')),
];
var_dump($new);