我为管理员制作了优惠券代码系统，以创建新的优惠券。在表格上，我需要计算折扣后要支付的最后金额。我写了
if(!empty($discountCode)) {
$amount = ($unitCost - $unitCost * $couponDiscount / 100);
}
在添加运输费用并处理付款之前。我不确定是否正确...
我收到$ email-$ qty-$ cardName-$ cardAddress1-$ cardAddress2-$ cardCity-$ cardState-$ cardZipcode-$ shippingMethod-$ product-$ token-$ couponDiscount的未定义索引错误，很奇怪，但没有获取$ unitCost ，$ intRate或$ domRate。
我怎样才能解决这个问题？
这是我的形式preorder.php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
// Stores errors:
$errors = array();
// Need a payment token:
if (isset($_POST['stripeToken'])) {
$token = $_POST['stripeToken'];
// Check for a duplicate submission, just in case:
// Uses sessions
if (isset($_SESSION['token']) && ($_SESSION['token'] == $token)) {
$errors['token'] = 'You have apparently resubmitted the form. Please do not do that.';
} else { // New submission.
$_SESSION['token'] = $token;
}
} else {
$errors['token'] = 'The order cannot be processed. Please make sure you have JavaScript enabled and try again.';
}
$unitCost = 6995;
$intRate = 1500;
$domRate = 500;
//print_r($_POST);
$email = $_POST['email'];
$qty = $_POST['qty'];
$cardName = $_POST['card-name'];
$cardAddress1 = $_POST['address'];
$cardAddress2 = $_POST['address2'];
$cardCity = $_POST['city'];
$cardState = $_POST['state'];
$cardZipcode = $_POST['zipcode'];
$shippingMethod = $_POST['shipping-method'];
$product = $_POST['productColor'];
$token = $_POST['stripeToken'];
$couponDiscount = $_POST['couponDiscount'];
if(!empty($discountCode)) {
$amount = ($unitCost - $unitCost * $couponDiscount / 100);
}
if($shippingMethod == 'International') :
$amount = $qty * ($intRate + $unitCost);
$description = ''.$qty.' - products(s) in '.$product.'(+International Shipping)';
else:
$amount = $qty * ($domRate + $unitCost);
$description = ''.$qty.' - products(s) in '.$product.'(+Domestic Shipping)';
endif;
// Charge the order:
$charge = Stripe_Charge::create(array(
"amount" => $amount, // amount in cents, again
"currency" => "usd",
"description" => $description,
"customer" => $customer->id
));
// Check that it was paid:
if ($charge->paid == true) {
$amountReadable = $amount / 100; // to add in decimal points
echo '<div class="alert alert-success">Your card was successfully billed for $'.$amountReadable.'</div>';
$status = "paid";
$tracking_num = "";
表单提交与preorder.js中的优惠券验证一起完成，可以很好地工作并正确检查代码：
// Watch for the document to be ready:
$(document).ready(function() {
// Watch for a form submission:
$("#preorder").submit(function(event) {
// Flag variable:
var error = false;
// disable the submit button to prevent repeated clicks:
$('#submitBtn').attr("disabled", "disabled");
// Check for errors:
if (!error) {
Stripe.card.createToken({
number: $('.card-number').val(),
cvc: $('.card-cvc').val(),
exp_month: $('.card-expiry-month').val(),
exp_year: $('.card-expiry-year').val()
}, stripeResponseHandler);
}
// Prevent the form from submitting:
return false;
}); // Form submission
//Coupon code validation
$("#coupon_code").keyup(function(){
var value = $(this).val();
var data = {
code:value,
validateCouponCode:true
}
$.post("core.php",data,function(response){
//Since the response will be json_encode'd JSON string we parse it here
var callback = JSON.parse(response);
if(callback.status){
$("#couponStatus").html(" <span style='color:green'>Coupon is valid =) "+callback.discount_rate+"% discount</span> ");
}else{
$("#couponStatus").html(" <span style='color:red'>Coupon is not valid</span> ");
}
})
})
//Coupon Code validation END
}); // Document ready.
// Function handles the Stripe response:
function stripeResponseHandler(status, response) {
// Check for an error:
if (response.error) {
reportError(response.error.message);
} else { // No errors, submit the form:
var f = $("#preorder");
// Token contains id, last4, and card type:
var token = response['id'];
// Insert the token into the form so it gets submitted to the server
f.append("<input type='hidden' name='stripeToken' value='" + token + "' />");
// Submit the form:
f.get(0).submit();
}
} // End of stripeResponseHandler() function.
这是core.php：
//For ajax requests create an empty respond object
$respond = new stdClass();
$respond->status = false;
//END
$conn = mysql_connect("localhost",DB_USER,DB_PASSWORD);
mysql_select_db(DB_NAME);
//Execute the query
$foo = mysql_query("SELECT * FROM coupons WHERE expire > NOW() OR expire IS NULL OR expire = '0000-00-00 00:00:00'");
//Create an empty array
$rows = array();
while ($a=mysql_fetch_assoc($foo)) {
//Assign the rows fetched from query to the array
$rows[] = $a;
}
//Turn the array into an array of objects
$coupons = json_decode(json_encode($rows));
if(@$_POST["validateCouponCode"]){
foreach ($coupons as $coupon) {
if($coupon->coupon_code == $_POST["code"]){
//Coupon found
$respond->status = true;
//Additional instances to the respond object
$respond->discount_rate = $coupon->coupon_discount;
}
}
echo json_encode($respond);
}
最佳答案
经过数小时的实践，我最终找到了解决方案，并且可以正常工作。
感谢大家的建议。
仍然可以接受任何改进代码的建议。
// Check for a form submission:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
// Stores errors:
$errors = array();
// Need a payment token:
if (isset($_POST['stripeToken'])) {
$token = $_POST['stripeToken'];
// Check for a duplicate submission, just in case:
// Uses sessions, you could use a cookie instead.
if (isset($_SESSION['token']) && ($_SESSION['token'] == $token)) {
$errors['token'] = 'You have apparently resubmitted the form. Please do not do that.';
} else { // New submission.
$_SESSION['token'] = $token;
}
} else {
$errors['token'] = 'The order cannot be processed. Please make sure you have JavaScript enabled and try again.';
}
$unitCost = 4995;
$intRate = 1500;
$domRate = 500;
//print_r($_POST);
$email = $_POST['email'];
$qty = $_POST['qty'];
$cardName = $_POST['card-name'];
$cardAddress1 = $_POST['address'];
$cardAddress2 = $_POST['address2'];
$cardCity = $_POST['city'];
$cardState = $_POST['state'];
$cardZipcode = $_POST['zipcode'];
$shippingMethod = $_POST['shipping-method'];
$product = $_POST['kloqeColor'];
$token = $_POST['stripeToken'];
$couponDiscount = '';
$sql = "SELECT * FROM `------`.`coupons` WHERE `coupon_code` = '" .addslashes($_POST['coupon-code']) . "'";
//echo $sql;
$query = $connectAdmin->Query($sql);
if($query->num_rows > 0) {
$results = $query->fetch_array(MYSQLI_ASSOC);
$couponDiscount = $results['coupon_discount'];
}
//echo '<pre>' . print_r($_POST, true) . '</pre>';
$amount = $unitCost;
if(!empty($couponDiscount)) {
//$amount = ($unitCost - $unitCost * $couponDiscount / 100);
//echo 'Discount not empty<br>';
$amount = $unitCost * ((100-$couponDiscount) / 100);
}
//echo $amount . '<br>';