<form action="/shop/checkout/phone_order/order_phone.php" method="post">

    <input type="hidden" name="order_id" value="<?= $newbasket->order_id; ?>">
    <input type="hidden" name="is_phone" value="1">
    <input type="hidden" name="amount" value="<?php printf("%.2f", $newbasket->cost_total); ?>">

    <div class="row">
        <label for="transaction_id">Transaction Reference</label>
        <div class="inputWrap <?= $error == 'no_tx' ? 'inputError showError' : '' ?>">
            <input type="text" name="transaction_id" id="transaction_id" class="text" />
            <?php
            if ($error == 'no_tx') {
            ?>
            <div class="errorWrap">
                <i class="fa fa-exclamation"></i>
                <span>Transaction ID is not provided</span>
            </div>
            <?php
            }
            ?>
        </div> <!-- .inputWrap -->
    </div>
    <button type="submit" name="pay" class="checkoutButton button right">
        Finalize Purchase
    </button>
</form>