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Now we take care of the case where either the credit card information form
hasn't yet been submitted, or it has been but there were one or more validation
errors. This is all quite similar to what we used for the Contact and Address
form earlier in the chapter. If your credit card verification service requires
more information on the cardholder, you can probably copy and paste the HTML
for those form fields from checkout.php
into this file, perhaps prefixing the field names with "Cardholder0"
(e.g. Cardholder0Address0Line01_address_required)
to avoid confusion, as we've done with the Cardholder Name and Cardholder
ZIP Code fields already. The information in this form should probably not
be saved anywhere unless you plan to set up user accounts and obtain permission
to do so from each customer.
Do not save credit card account numbers unless you do via a secure connection and the database in which you save them can't be read from the Web.
else
{
?>
<h2>Credit Card Information</h2>
<p>All fields are required.</p>
<script src="../scripts/validate.js"></script>
<form action="<?php echo $PHP_SELF; ?>" method="POST"
onsubmit="return validate(this);">
<table width="80%" cellpadding="1" cellspacing="0" border="0">
<tr>
<th class="cart" colspan="2">Your name as it appears on the card:</th>
</tr>
<tr>
<td class="cart" colspan="2" align="center">
<input type="text" name="Cardholder0Name_required_alphabetic" size="50"
value="<?php report("Cardholder0Name_required_alphabetic"); ?>" /> </td>
</tr>
<tr>
<td colspan="2"><hr noshade="noshade" /></td>
</tr>
<tr>
<th class="cart" colspan="2">Type of card:</th>
</tr>Note that there's some repetitive code here where we display the credit card types and accompanying radio buttons. Since we only use this code once and there's just three card types to worry, we don't bother with doing so here, but if we were to re-use this display elsewhere on the site, or if we began accepting more types of card, we might want to consider storing the types in an array or even in another database table.
<tr>
<td class="cart" align="right" width="50%">Visa</td>
<td class="cart">
<input type="radio" name="Credit0Card0Type_required"
value="Visa"
<?php
if( isset($HTTP_POST_VARS["Credit0Card0Type_required"])
&&
$HTTP_POST_VARS["Credit0Card0Type_required"] == "Visa" )
echo " checked=\"checked\"";
?> />
</td>
</tr>
<tr>
<td class="cart" align="right">MasterCard</td>
<td class="cart">
<input type="radio" name="Credit0Card0Type_required"
value="MasterCard"
<?php
if( isset($HTTP_POST_VARS["Credit0Card0Type_required"])
&&
$HTTP_POST_VARS["Credit0Card0Type_required"] == "MasterCard" )
echo " checked=\"checked\"";
?> />
</td>
</tr>
<tr>
<td class="cart" align="right">American Express</td>
<td class="cart">
<input type="radio" name="Credit0Card0Type_required"
value="American Express"
<?php
if( isset($HTTP_POST_VARS["Credit0Card0Type_required"])
&&
$HTTP_POST_VARS["Credit0Card0Type_required"] == "American Express" )
echo " checked=\"checked\"";
?> />
</td>
</tr>
<tr>
<td colspan="2"><hr noshade="noshade" /></td>
</tr>
<tr>
<th class="cart" colspan="2">Expiration date:</th>
</tr>
<tr>| home / programming / carts / chap7 / 2 | [previous] [next] |
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Created: December 26, 2002
Revised: December 26, 2002
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