index.php

<?php

function splitMyName(string $name) {
    return explode(' ', $name);
}

function extractNameFromData(array $data) {
    return splitMyName($data['role']);
}

$data = [   
    'id' => 110690,
    'name' => 'Elias Soares',
    'role' => null
];

$name = extractNameFromData($data);

echo $name[0];