- var_dump: documentation ( source)
- strtoupper: documentation ( source)
<?php
function changeNames($people) {
foreach ($people as $key => $person) {
$people[$key]['name'] = strtoupper($person['name']);
}
return $people;
}
$myPeople = [
['name' => 'foo'],
['name' => 'bar']
];
changeNames($myPeople);
var_dump($myPeople);