Woocoomerce - export active subscribers

// Based on https://stackoverflow.com/questions/39596477/woocommerce-get-active-subscriptions-in-a-list-between-start-end-date
// This will remove duplicates and only return unique customers

function active_subscription_list($from_date = null, $to_date = null)
{
    // Get all customer orders
    $subscriptions = get_posts([
        'numberposts' => -1,
        'post_type' => 'shop_subscription', // Subscription post type
        'post_status' => 'wc-active', // Active subscriptions. could also use wc-completed, wc-pending, wc-pending-cancel, wc-cancelled
        'orderby' => 'post_date', // ordered by date
        'order' => 'ASC',
        'date_query' => [ // Start & end date
            [
                'after' => $from_date,
                'before' => $to_date,
                'inclusive' => true
            ],
        ]
    ]);

    $results = [];

    foreach ($subscriptions as $subscription) {
        $subscr_meta_data = get_post_meta($subscription->ID);
        $customer_name = $subscr_meta_data['_billing_first_name'][0] . ' ' . $subscr_meta_data['_billing_last_name'][0];
        $customer_email = $subscr_meta_data['_billing_email'][0];
        $subscription_status = $subscription->post_status;

        array_push($results, [
            'name' => $customer_name,
            'email' => $customer_email,
            'status' => $subscription_status
        ]);
    }

    $results = array_unique($results, SORT_REGULAR);

    echo "<table class='shop_table subscription_list'>
        <tr>
            <th>User Name</th>
            <th>User Email</th>
            <th>Subscription Status</th>
        </tr>
            ";

    foreach ($results as $result) {
        $name = $result['name'];
        $email = $result['email'];
        $status = $result['status'];
        echo "</tr>
                <td>$name</td>
                <td>$email</td>
                <td>$status</td>
            </tr>";
    }

    echo '</table>';
}

$from_date = '2010-06-19';
$to_date = '2017-09-21';

var_dump(active_subscription_list($from_date, $to_date));