add_filter('quform_confirmation_redirect_url_11_1', function ($url, Quform_Confirmation $confirmation, Quform_Form $form) {    $url = add_query_arg(array(
        'cmd' => '_cart',
        'upload' => '1',
        'charset' => 'utf-8',
 
        // Set business info
        'currency_code' => 'AUD',        'business' => 'sarakk132@gmail.com', 
        // Set customer info
        'first_name' => $form->getValue('quform_1_3')[2],        'last_name' => $form->getValue('quform_1_3')[4],        'email' => $form->getValue('quform_1_4'),        'address1' => $form->getValue('quform_1_5'),        'address2' => $form->getValue('quform_1_6'),        'city' => $form->getValue('quform_1_7'),        'state' => $form->getValue('quform_1_8'),        'zip' => $form->getValue('quform_1_9'),        'country' => $form->getValue('quform_1_10'), 
        // Add a product
        'item_name_1' => 'My Product',        'amount_1' => '1.00',        'quantity_1' => '1', 
        // Shipping
        'shipping_1' => '3.30'    ), 'https://www.paypal.com/cgi-bin/webscr');
 
    return $url;
}, 10, 3);