MySQLi和PHP只发送数据库中的单个产品

Question

我找不到代码中的问题。它只向数据库发送单个订单。当我在我的购物车中订购2件或更多件商品时，它只发送最后的订单。我不知道如何在代码中更改或添加一些语法。

这是我在checkout.php

<?php 
session_start(); 
echo '<h3>Your Order</h3>'; 
$current_url = base64_encode($url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']); 
    if(isset($_SESSION['products'])){ 
    echo '<ol>'; 
    echo '<form action="checkout_with_us.php" method="POST">'; 
    $total = 0; 
    $cart_items = 0; 

     foreach($_SESSION['products'] as $cart_itm){ 
      $product_code = $cart_itm['code']; 
      $results = $mysqli->query("SELECT product_name,product_desc,price FROM products WHERE product_code='$product_code' LIMIT 1"); 
      $obj = $results->fetch_object(); 
       echo '<li>'; 
       echo 'Price: '.$currency.$obj->price; 
       echo '<h4>'.$obj->product_name.'(Code: '.$product_code.')</h4>'; 
       echo 'Qty: '.$cart_itm['qty']; 
       echo '</li>'; 

        $subtotal = ($cart_itm['price'] * $cart_itm['qty']); 
        $total = ($total + $subtotal); 
        $cart_items++; 
         echo '<input type="hidden" name="item_name" value="'.$obj->product_name.'">'; 
         echo '<input type="hidden" name="item_desc" value="'.$obj->product_desc.'">'; 
         echo '<input type="hidden" name="item_qty" value="'.$cart_itm["qty"].'">'; 
         echo '<input type="hidden" name="item_code" value="'.$product_code.'">';  
       } 
        echo '<strong>Sub Total: '.$currency.$total.'</strong>'; 
        echo '<input type="hidden" name="price" value="'.$total.'">'; 
        echo '</ol>'; 
        } 

//Here is the information of the customer 
echo 'Firstname: <input type="text" name="firstname"><br />'; 
echo 'Lastname: <input type="text" name="lastname"><br />'; 
echo 'Email: <input type="text" name="email"><br />'; 
echo '<input type="submit" value="Send Step">'; 

echo '</form>'; 
?> 

这里是我的checkout.with_us.php代码的代码。此代码是将信息发送到数据库的桥梁。

<?php 
session_start(); 
$firstname = $_POST['firstname']; 
$lastname = $_POST['lastname']; 
$email = $_POST['email']; 
$order_name = $_POST['item_name']; 
$order_code = $_POST['item_code']; 
$order_qty = $_POST['item_qty']; 
$sub_total = $_POST['price']; 

$conn = mysqli_connect('localhost','root','','sampsix')or die('Could not connect'); 

$query = "INSERT INTO `sampsix`.`orders`(`firstname`,`lastname`,`email`,`OrderName`,`OrderCode`,`OrderQty`,`SubTotal`) VALUES('$firstname','$lastname','$email','$order_name','$order_code','$order_qty','$sub_total')"; 

mysqli_query($conn,$query); 

mysqli_close($conn); 

header('Location: checkout.php'); 
?> 

Answer 1

删除你的其他问题，好吗？

问题是你循环通过$_SESSION并每次使用相同的name值。您需要创建一个输入数组。这里有一个例子：

<?php 
echo '<h3>Your Order</h3>'; 
$current_url = base64_encode($url='http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']); 
    if(isset($_SESSION['products'])){ 
    echo '<ol>'; 
    echo '<form action="checkout_with_us.php" method="POST">'; 
    $total = 0; 
    $cart_items = 0; 

     foreach($_SESSION['products'] as $cart_itm){ 
      $product_code = $cart_itm['code']; 
      $results = $mysqli->query("SELECT product_name,product_desc,price FROM products WHERE product_code='$product_code' LIMIT 1"); 
      $obj = $results->fetch_object(); 
       echo '<li>'; 
       echo 'Price: '.$currency.$obj->price; 
       echo '<h4>'.$obj->product_name.'(Code: '.$product_code.')</h4>'; 
       echo 'Qty: '.$cart_itm['qty']; 
       echo '</li>'; 

        $subtotal = ($cart_itm['price'] * $cart_itm['qty']); 
        $total = ($total + $subtotal); 
        $cart_items++; 
         echo '<input type="hidden" name="product['.$product_code.'][item_name]" value="'.$obj->product_name.'">'; 
         echo '<input type="hidden" name="product['.$product_code.'][item_desc]" value="'.$obj->product_desc.'">'; 
         echo '<input type="hidden" name="product['.$product_code.'][item_qty]" value="'.$cart_itm["qty"].'">'; 
         echo '<input type="hidden" name="product['.$product_code.'][item_code]" value="'.$product_code.'">';  
       } 
        echo '<strong>Sub Total: '.$currency.$total.'</strong>'; 
        echo '<input type="hidden" name="product['.$product_code.'][price]" value="'.$total.'">'; 
        echo '</ol>'; 
        } 

//Here is the information of the customer 
echo 'Firstname: <input type="text" name="firstname"><br />'; 
echo 'Lastname: <input type="text" name="lastname"><br />'; 
echo 'Email: <input type="text" name="email"><br />'; 
echo '<input type="submit" value="Send Step">'; 

echo '</form>'; 
?> 

您可以通过在product阵列循环赶上这样的：

<?php 
$firstname = $_POST['firstname']; 
$lastname = $_POST['lastname']; 
$email = $_POST['email']; 

$conn = mysqli_connect('localhost','root','','sampsix')or die('Could not connect'); 

foreach($_POST['product'] as $product) 
{ 
    $order_name = $product['item_name']; 
    $order_code = $product['item_code']; 
    $order_qty = $product['item_qty']; 
    $sub_total = $product['price']; 

    $query = "INSERT INTO `sampsix`.`orders`(`firstname`,`lastname`,`email`,`OrderName`,`OrderCode`,`OrderQty`,`SubTotal`) VALUES('$firstname','$lastname','$email','$order_name','$order_code','$order_qty','$sub_total')"; 
    mysqli_query($conn,$query); 
} 



mysqli_close($conn); 

header('Location: checkout.php'); 
?> 

我不知道目的是表orders的产品，但与我的例子中会出现什么被添加到这个表格中的相同firstname,lastname等