Question

我在使用in_array时遇到问题。如果我使用in_array

in_array($productByCode[0]["id"],$_SESSION["cart_item"])

的index.php

<?php
session_start();
require_once("dbcontroller.php");
$db_handle = new DBController();
if(!empty($_GET["action"])) {
switch($_GET["action"]) {
    case "add":
        if(!empty($_POST["quantity"])) {
            $productByCode = $db_handle->runQuery("SELECT * FROM tblproduct WHERE code='" . $_GET["code"] . "'");
            $itemArray = array($productByCode[0]["id"]=>array('name'=>$productByCode[0]["name"], 'code'=>$productByCode[0]["code"], 'quantity'=>$_POST["quantity"], 'price'=>$productByCode[0]["price"]));

            if(!empty($_SESSION["cart_item"])) {
                if(in_array($productByCode[0]["id"],$_SESSION["cart_item"])) {
                    foreach($_SESSION["cart_item"] as $k => $v) {
                            if($productByCode[0]["id"] == $k)
                                $_SESSION["cart_item"][$k]["quantity"] = $_POST["quantity"];
                    }
                } else {
                    $_SESSION["cart_item"] = array_merge($_SESSION["cart_item"],$itemArray);
                }
            } else {
                $_SESSION["cart_item"] = $itemArray;
            }
        }
    break;
    case "remove":
        if(!empty($_SESSION["cart_item"])) {
            foreach($_SESSION["cart_item"] as $k => $v) {
                    if($_GET["code"] == $k)
                        unset($_SESSION["cart_item"][$k]);              
                    if(empty($_SESSION["cart_item"]))
                        unset($_SESSION["cart_item"]);
            }
        }
    break;
    case "empty":
        unset($_SESSION["cart_item"]);
    break;  
}
}
echo "<pre>";
print_r($_SESSION);
echo "</pre>";
?>
<HTML>
<HEAD>
<TITLE>Simple PHP Shopping Cart</TITLE>
<link href="style.css" type="text/css" rel="stylesheet" />
</HEAD>
<BODY>
<div id="shopping-cart">
<div class="txt-heading">Shopping Cart <a id="btnEmpty" href="index.php?action=empty">Empty Cart</a></div>
<?php
if(isset($_SESSION["cart_item"])){
    $item_total = 0;
?>  
<table cellpadding="10" cellspacing="1">
<tbody>
<tr>
<th><strong>Name</strong></th>
<th><strong>Code</strong></th>
<th><strong>Quantity</strong></th>
<th><strong>Price</strong></th>
<th><strong>Action</strong></th>
</tr>   
<?php       
    foreach ($_SESSION["cart_item"] as $item){
        ?>
                <tr>
                <td><strong><?php echo $item["name"]; ?></strong></td>
                <td><?php echo $item["code"]; ?></td>
                <td><?php echo $item["quantity"]; ?></td>
                <td align=right><?php echo "$".$item["price"]; ?></td>
                <td><a href="index.php?action=remove&code=<?php echo $item["code"]; ?>" class="btnRemoveAction">Remove Item</a></td>
                </tr>
                <?php
        $item_total += ($item["price"]*$item["quantity"]);
        }
        ?>

<tr>
<td colspan="5" align=right><strong>Total:</strong> <?php echo "$".$item_total; ?></td>
</tr>
</tbody>
</table>        
  <?php
}
?>
</div>

<div id="product-grid">
    <div class="txt-heading">Products</div>
    <?php
    $product_array = $db_handle->runQuery("SELECT * FROM tblproduct ORDER BY id ASC");
    if (!empty($product_array)) { 
        foreach($product_array as $key=>$value){
    ?>
        <div class="product-item">
            <form method="post" action="index.php?action=add&code=<?php echo $product_array[$key]["code"]; ?>">
            <div class="product-image"><img src="<?php echo $product_array[$key]["image"]; ?>"></div>
            <div><strong><?php echo $product_array[$key]["name"]; ?></strong></div>
            <div class="product-price"><?php echo "$".$product_array[$key]["price"]; ?></div>
            <div><input type="text" name="quantity" value="1" size="2" /><input type="submit" value="Add to cart" class="btnAddAction" /></div>
            </form>
        </div>
    <?php
            }
    }
    ?>
</div>
</BODY>
</HTML>

http://i.stack.imgur.com/zVPUj.png step3

结果与此图像相同

值数组第一个索引是[0]，[1]，[2]当我在篮子中添加更多产品并重复产品时（同一图像步骤3），但如果我添加一个产品，那么vale数组第一个索引是ID产品[2]

如果我使用$ productByCode [0] [＆＃34;代码＆＃34;]

$itemArray = array($productByCode[0]["code"]=>array('name'=>$productByCode[0]["name"], 'code'=>$productByCode[0]["code"], 'quantity'=>$_POST["quantity"], 'price'=>$productByCode[0]["price"]));

            if(!empty($_SESSION["cart_item"])) {
                if(in_array($productByCode[0]["code"],$_SESSION["cart_item"])) {
                    foreach($_SESSION["cart_item"] as $k => $v) {
                            if($productByCode[0]["code"] == $k)
                                $_SESSION["cart_item"][$k]["quantity"] = $_POST["quantity"];
                    }
                } else {
                    $_SESSION["cart_item"] = array_merge($_SESSION["cart_item"],$itemArray);
                }
            } else {
                $_SESSION["cart_item"] = $itemArray;
            }

http://i.stack.imgur.com/quGqo.png step4

当我将产品添加到购物篮时（同样的步骤4），如果添加，请查看产品购物车重复此产品不重复同样的步骤3。为什么我改变 $ productByCode [0] [＆＃34;代码＆＃34;]到$ productByCode [0] [＆＃34; ID＆＃34;] in_array not not 检查循环？

dbcontroller.php

<?php
class DBController {
    private $host = "127.0.0.1";
    private $user = "root";
    private $password = "1234";
    private $database = "simple";

    function __construct() {
        $conn = $this->connectDB();
        if(!empty($conn)) {
            $this->selectDB($conn);
        }
    }

    function connectDB() {
        $conn = mysql_connect($this->host,$this->user,$this->password);
        return $conn;
    }

    function selectDB($conn) {
        mysql_select_db($this->database,$conn);
    }

    function runQuery($query) {
        $result = mysql_query($query);
        while($row=mysql_fetch_assoc($result)) {
            $resultset[] = $row;
        }       
        if(!empty($resultset))
            return $resultset;
    }

    function numRows($query) {
        $result  = mysql_query($query);
        $rowcount = mysql_num_rows($result);
        return $rowcount;   
    }
}
?>

table tblproduct

CREATE TABLE IF NOT EXISTS `tblproduct` (
  `id` int(8) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `code` varchar(255) NOT NULL,
  `image` text NOT NULL,
  `price` double(10,2) NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `product_code` (`code`)
)

INSERT INTO `tblproduct` (`id`, `name`, `code`, `image`, `price`) VALUES
(1, '3D Camera', '3DcAM01', 'product-images/camera.jpg', 1500.00),
(2, 'External Hard Drive', 'USB02', 'product-images/external-hard-drive.jpg', 800.00),
(3, 'Wrist Watch', 'wristWear03', 'product-images/watch.jpg', 300.00);

php购物车如何使用in_array？

0 个答案: