Question

我的购物车页面上有两个链接。一个是“继续购物”，一个是产品目录，另一个是“结账”，它通往订单详情页面。问题是，当我刷新订单详细信息页面时，我的order_id会增加，并且新订单会存储在我不想要的表中。我使用header（..）来阻止它，但它似乎也没有用。

session_start(); 
if(!isset($_SESSION["customer"])) 
{
header("location: customer_login.php"); // will not execute if loggedin.
exit();
}

// Connect to the MYSQL database.
include "storescripts/connect_to_mysql.php";
// Checks to see that the URL variable is set and that it exists in the database.

// Will be used to output the order elements.
$cartOutput = "";
if(isset($_SESSION["cart_array"]) && !empty($_SESSION["cart_array"]))
{

$customer=$_SESSION["customer"];

// Get the customer id against the username of the customer.
$sql=mysql_query("select customer_id from customer c where user_name='$customer'");
$productCount = mysql_num_rows($sql); // count the output amount.
if($productCount > 0)
{
    while($row = mysql_fetch_array($sql))
    {
        $customer_id=$row["customer_id"];
    }   
}
else
{
    echo "This user doesn't exist in our database.";    
    exit();
}

mysql_query("insert into orders(order_date,customer_id,payment_id)    
values(now(),'$customer_id',2)")or die(mysql_error());


// Get the order id of the customer in order to store information in order2product table.
$sql2=mysql_query("select order_id from orders where customer_id='$customer_id'") or  
die(mysql_error());
$productCount = mysql_num_rows($sql2); // count the output amount.
if($productCount > 0)
{
    while($row = mysql_fetch_array($sql2))
    {
        $order_id=$row["order_id"];
    }   
}
else
{
    echo "The customer id which you specified doesn't have an order id against it.";    
    exit();
}
foreach($_SESSION["cart_array"] as $listitem) 
{
    $item_id=$listitem['item_id'];
    $quantity=$listitem['quantity'];
    mysql_query("insert into order2product(Product_id,Order_id,quantity) 
    values('$item_id','$order_id','$quantity')") or die(mysql_error()); 
}

 header ("location:order_page.php");
 exit();
} most outer if condition ends

else ...

Answer 1

开发购物车并使用mysql_*功能？你问了很多问题。我建议PDO。

无论如何，为什么不将order_id绑定到会话并将其绑定到数据库..检查会话是否存在。如果存在，请检查数据库。如果它也存在，请使用它！如果没有，那么您可以生成新的ID。从那里，当您看到空订单时 - 您可以假设它们在会话超时期后被放弃。当然，还有其他优雅的解决方案，但这应该让你开始。

停止更新每个类型页面的更新值

1 个答案: