WooCommerce apply a fee when certain products are in the cart

functions.php

<?php
// Add a once-of fee to the cart when certain items are in the cart
add_action( 'woocommerce_cart_calculate_fees','woocommerce_custom_surcharge' );
function woocommerce_custom_surcharge() {
    global $woocommerce;
    $apply_fee = false;
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;
    $product_ids = array( 1, 2, 3, 4 ); // Coma separated list of product id's that must be in cart for fee to apply
    foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
        if ( in_array( $values['product_id'], $product_ids ) {
            $apply_fee = true;
        }
    }
    if ( $apply_fee ) {
        $percentage = 0.01;
        $surcharge = 10;
        $woocommerce->cart->add_fee( 'Setup Fee', $surcharge, true, 'standard' );
    }
}
?>

Missing closing parenthesis, change;

if ( in_array( $values['product_id'], $product_ids ) {

to

if ( in_array( $values['product_id'], $product_ids )) {