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PHP Integrating PHP with Databases Querying the Database with PHP Working with Results

I'm a little stuck

I tried doing the following to solve for this, but I'm not sure what I'm doing wrong. I feel like I'm missing something for grabbing the information from the array once I have it.

index.php
<?php
include "helper.php";

try {
    $results = $db->query(
        "SELECT member_id, email, fullname, level FROM members"
    );
} catch (Exception $e) {
    echo $e->getMessage();
}
//add code below this line
$result = ($results->fetchAll(PDO::FETCH_ASSOC));
send_offer($result['member_id'], $result['email'], $result['fullname'], $result['level']);