Cart is empty intermittently

The weird thing, its only happening from home page with the add to cart buttons. Other pages are working. Its only happening once in a while and some people have the problem and some do not. please advise if you want to look at something else.

<?php
//WA eCart Include
require_once("WA_eCart/eCart1_PHP.php");
?>
<?php
$eCart1->GetContent();
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_1_ATC"]) || isset($_POST["eCart1_1_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_1_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "BusinessWeek 50 Issues - 1 Year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_1_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("10.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_2_ATC"]) || isset($_POST["eCart1_2_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_2_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "Smart Money 12 Issues, 1 year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_2_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("5.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_3_ATC"]) || isset($_POST["eCart1_3_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_3_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "Black Enterprise 12 issues, 1 year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_3_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("5.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_4_ATC"]) || isset($_POST["eCart1_4_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_4_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "Entrepreneur 12 issues, 1 year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_4_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("5.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_5_ATC"]) || isset($_POST["eCart1_5_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_5_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "Good Housekeeping 12 issues, 1 year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_5_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("3.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart AddToCart
if (isset($_POST["eCart1_6_ATC"]) || isset($_POST["eCart1_6_ATC_x"])) {
$ATC_itemID = $_POST["eCart1_6_ID_Add"];
$ATC_AddIfIn = 0;
$ATC_RedirectAfter = "shopping_cart.php";
$ATC_RedirectIfIn = "";
$ATC_itemName = "Oprah 12 issues, 1 year";// column binding
$ATC_itemDescription = "";// column binding
$ATC_itemWeight = floatval("0");// column binding
$ATC_itemQuantity = "".$_POST["eCart1_6_Quantity_Add"] ."";// column binding
$ATC_itemPrice = floatval("8.00");// column binding
$ATC_itemQuantity = floatval($ATC_itemQuantity);
if (is_numeric($ATC_itemQuantity) && $ATC_itemQuantity != 0) {
$eCart1->AddToCart($ATC_AddIfIn, $ATC_RedirectIfIn, $ATC_itemID, $ATC_itemName, $ATC_itemDescription, $ATC_itemWeight, $ATC_itemQuantity, $ATC_itemPrice);
if ($ATC_RedirectAfter != "" && $eCart1->redirStr == "") {
$eCart1->redirStr = $ATC_RedirectAfter;
}
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING'];
}
else {
$_SESSION['WAEC_ContinueRedirect'] = $_SERVER['PHP_SELF'];
}
}
}
?>
<?php
// WA eCart Redirect
if ($eCart1->redirStr != "") {
header("Location: ".$eCart1->redirStr);
}
?>

It is next to impossible to nail down the cause of a problem without steps to reproduce it, where the error only occurs sometimes for some people and not all, the first thing that comes to mind is an issue on the server with session garbage collection. It cold be that the server is emptying the session temp files from the php temp directory prematurely.

For each session that is started, a temp file is created on the server, this file is used to track the contents of the session and is deleted when the session expires, or the user closes their browser, the server may be deleting these temp files before it is supposed to.

It could also be that the user is crossing domains. when they first arrive at the home page, they are coming to:
index.php

it is possible that the add to cart button is forwarding them to:
cart.php


these would be considered two separate domains by the session cookie, so the cart would appear top be empty. the item was added to the cart page for the domain:
cart.php

instead.

It is this:

It could also be that the user is crossing domains. when they first arrive at the home page, they are coming to:
index.php

it is possible that the add to cart button is forwarding them to:
cart.php

I did have them going from http to https and thats when I got the error. Then I changed the cart and the checkout page with the instructions from webassist and now its happening between the cart and the checkout page. Is it possible that the code is not in the right order on shopping cart page? I am attaching the 2 files.

Please read my message above..Maybe I didn't make myself clear that I still have the problem..Just making sure..:)

Crossing from http to https will not cause the problem i described, as long as the domain stays the same.

So for example, going from:
www.mydomain.com


to:
www.mydomain.com

will not cause an issue. http vs. https only changes the port that is used to connect to the web site:
http = port 80
https = port 443

it does not change the domain.


When I test your pages I am not able to reproduce the problem. I will need to be able to reproduce the problem to be able to get an idea of the cause. With out being able to reproduce, I really have no way of knowing what the problem may be.

This is what happens: The items are in the shopping cart. When the checkout button is clicked, its suppose to got to the checkout page. It stays on the shopping cart page and says the shopping cart is empty. It sounds to me that its something to do with the redirect "if shopping cart is empty" code. Can you see if the code is in the right places on the pages please?

This has happened on a couple of my shopping carts on servers with Godaddy, there are 2 different servers for http and https so I implemented this: ecart_ssl_ht.pdf

Now we don't have the problems.

Great, glad to hear you have got it working.

Still getting ecart empty cart from http to https intermittently. WHY???

do you have a set of steps to reproduce the problem?

If you can give me a set of steps that will reproduce the problem, I can likely figure out what is going wrong.

being able to reproduce the problem is the key to troubleshooting it. Without being able to reproduce the problem, I do not have enough information to determine why it is occurring.