請教關(guān)于PHP購物車代碼的數(shù)據(jù)庫表和字段

PHP Code

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div id="products-wrapper"

h1Products/h1

div class="products"

?php

//current URL of the Page. cart_update.php redirects back to this URL

$current_url = base64_encode($url="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

$results = $mysqli-query("SELECT * FROM cart ORDER BY id ASC");

if ($results) {

//fetch results set as object and output HTML

while($obj = $results-fetch_object())

{

echo 'div class="product"';

echo 'form method="post" action="cart_update.php"';

echo 'div class="product-thumb"img src="images/'.$obj-product_img_name.'"/div';

echo 'div class="product-content"h3'.$obj-product_name.'/h3';

echo 'div class="product-desc"'.$obj-product_desc.'/div';

echo 'div class="product-info"';

echo 'Price '.$currency.$obj-price.' | ';

echo 'Qty input type="text" name="product_qty" value="1" size="3" /';

echo 'button class="add_to_cart"Add To Cart/button';

echo '/div/div';

echo 'input type="hidden" name="product_code" value="'.$obj-product_code.'" /';

echo 'input type="hidden" name="type" value="add" /';

echo 'input type="hidden" name="return_url" value="'.$current_url.'" /';

echo '/form';

echo '/div';

}

}

?

/div

div class="shopping-cart"

h2Your Shopping Cart/h2

?php

if(isset($_SESSION["products"]))

{

$total = 0;

echo 'ol';

foreach ($_SESSION["products"] as $cart_itm)

{

echo 'li class="cart-itm"';

echo 'span class="remove-itm"a href="cart_update.php?removep='.$cart_itm["code"].'return_url='.$current_url.'"×/a/span';

echo 'h3'.$cart_itm["name"].'/h3';

echo 'div class="p-code"P code : '.$cart_itm["code"].'/div';

echo 'div class="p-qty"Qty : '.$cart_itm["qty"].'/div';

echo 'div class="p-price"Price :'.$currency.$cart_itm["price"].'/div';

echo '/li';

$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);

$total = ($total + $subtotal);

}

echo '/ol';

echo 'span class="check-out-txt"strongTotal : '.$currency.$total.'/strong a href="view_cart.php"Check-out!/a/span';

echo 'span class="empty-cart"a href="cart_update.php?emptycart=1return_url='.$current_url.'"Empty Cart/a/span';

}else{

echo 'Your Cart is empty';

}

?

/div

cart_update.php

PHP Code

?php

session_start();

include_once("config.php");

//empty cart by distroying current session

if(isset($_GET["emptycart"]) $_GET["emptycart"]==1)

{

$return_url = base64_decode($_GET["return_url"]); //return url

session_destroy();

header('Location:'.$return_url);

}

//add item in shopping cart

if(isset($_POST["type"]) $_POST["type"]=='add')

{

$product_code = filter_var($_POST["product_code"], FILTER_SANITIZE_STRING); //product code

$product_qty = filter_var($_POST["product_qty"], FILTER_SANITIZE_NUMBER_INT); //product code

$return_url = base64_decode($_POST["return_url"]); //return url

//limit quantity for single product

if($product_qty 10){

die('div align="center"This demo does not allowed more than 10 quantity!br /a href=""Back To Products/a./div');

}

//MySqli query - get details of item from db using product code

$results = $mysqli-query("SELECT product_name,price FROM cart WHERE product_code='$product_code' LIMIT 1");

$obj = $results-fetch_object();

if ($results) { //we have the product info

//prepare array for the session variable

$new_product = array(array('name'=$obj-product_name, 'code'=$product_code, 'qty'=$product_qty, 'price'=$obj-price));

if(isset($_SESSION["products"])) //if we have the session

{

$found = false; //set found item to false

foreach ($_SESSION["products"] as $cart_itm) //loop through session array

{

if($cart_itm["code"] == $product_code){ //the item exist in array

$product[] = array('name'=$cart_itm["name"], 'code'=$cart_itm["code"], 'qty'=$product_qty, 'price'=$cart_itm["price"]);

$found = true;

}else{

//item doesn't exist in the list, just retrive old info and prepare array for session var

$product[] = array('name'=$cart_itm["name"], 'code'=$cart_itm["code"], 'qty'=$cart_itm["qty"], 'price'=$cart_itm["price"]);

}

}

if($found == false) //we didn't find item in array

{

//add new user item in array

$_SESSION["products"] = array_merge($product, $new_product);

}else{

//found user item in array list, and increased the quantity

$_SESSION["products"] = $product;

}

}else{

//create a new session var if does not exist

$_SESSION["products"] = $new_product;

}

}

//redirect back to original page

header('Location:'.$return_url);

}

//remove item from shopping cart

if(isset($_GET["removep"]) isset($_GET["return_url"]) isset($_SESSION["products"]))

{

$product_code = $_GET["removep"]; //get the product code to remove

$return_url = base64_decode($_GET["return_url"]); //get return url

foreach ($_SESSION["products"] as $cart_itm) //loop through session array var

{

if($cart_itm["code"]!=$product_code){ //item does,t exist in the list

$product[] = array('name'=$cart_itm["name"], 'code'=$cart_itm["code"], 'qty'=$cart_itm["qty"], 'price'=$cart_itm["price"]);

}

//create a new product list for cart

$_SESSION["products"] = $product;

}

//redirect back to original page

header('Location:'.$return_url);

}

?

view_cart.php

PHP Code

div class="view-cart"

?php

$current_url = base64_encode($url="http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);

if(isset($_SESSION["products"]))

{

$total = 0;

echo 'form method="post" action="paypal-express-checkout/process.php"';

echo 'ul';

$cart_items = 0;

foreach ($_SESSION["products"] as $cart_itm)

{

$product_code = $cart_itm["code"];

$results = $mysqli-query("SELECT product_name,product_desc, price FROM cart WHERE product_code='$product_code' LIMIT 1");

$obj = $results-fetch_object();

echo 'li class="cart-itm"';

echo 'span class="remove-itm"a href="cart_update.php?removep='.$cart_itm["code"].'return_url='.$current_url.'"×/a/span';

echo 'div class="p-price"'.$currency.$obj-price.'/div';

echo 'div class="product-info"';

echo 'h3'.$obj-product_name.' (Code :'.$product_code.')/h3 ';

echo 'div class="p-qty"Qty : '.$cart_itm["qty"].'/div';

echo 'div'.$obj-product_desc.'/div';

echo '/div';

echo '/li';

$subtotal = ($cart_itm["price"]*$cart_itm["qty"]);

$total = ($total + $subtotal);

echo 'input type="hidden" name="item_name['.$cart_items.']" value="'.$obj-product_name.'" /';

echo 'input type="hidden" name="item_code['.$cart_items.']" value="'.$product_code.'" /';

echo 'input type="hidden" name="item_desc['.$cart_items.']" value="'.$obj-product_desc.'" /';

echo 'input type="hidden" name="item_qty['.$cart_items.']" value="'.$cart_itm["qty"].'" /';

$cart_items ++;

}

echo '/ul';

echo 'span class="check-out-txt"';

echo 'strongTotal : '.$currency.$total.'/strong ';

echo '/span';

echo '/form';

}else{

echo 'Your Cart is empty';

}

?

/div

/div

php里用數(shù)據(jù)庫實現(xiàn)購物車是怎么個思路，求高手解答

數(shù)據(jù)庫是建立一個購物車的表的。用戶ID作外鏈。用戶選定一種商品，存商品相關(guān)屬性入表。用戶查看購物車時只要把有該用戶ID的購物信息讀出來就行了。維護這張表就可以體現(xiàn)出用戶的購物行為了。

PHPI做電子商務(wù)系統(tǒng),那個購物車怎么建表啊?

在數(shù)據(jù)庫里面用表（ShopingCart）

表有幾個基本字段

CartId 購物車ID（唯一）

Id 商品的ID（唯一）

Qty 用戶購買商品的數(shù)量

CreateDate 購物車創(chuàng)建時間

此表的字段CartId是區(qū)分不同用戶的購物車的ID，要是登陸用戶，你可以在表中存放此登陸用戶的登陸名的ID，要是未登陸用戶使用購物車，

如果是非登陸用戶

PHP怎么做購物車？

購物車

有兩種實現(xiàn)方式，一種是保存在數(shù)據(jù)庫，另外一種是session

保存在數(shù)據(jù)庫的不會以為關(guān)閉瀏覽器而消失，session會因為關(guān)閉瀏覽器就沒有了。

原理是把每個商品的信息存到一個數(shù)組里面，然后以這個商品的id作為鍵值，然后吧數(shù)組存到session里面就行，

如果是存入數(shù)據(jù)庫的話，就用關(guān)聯(lián)數(shù)據(jù)存一下就行的

php 實現(xiàn) 購物車 提交到 訂單的數(shù)據(jù)庫

用戶登陸后系統(tǒng)應(yīng)該會分配一個session ： id，這個id應(yīng)該是改用于的用戶表id。然后再做一個購物車的表，里面可以只考慮存商品id、用戶id等關(guān)鍵信息；

當(dāng)用戶提交購買的時候再做相關(guān)的操作，具體可以參考淘寶、天貓的購物車已經(jīng)后續(xù)付款效果。

php關(guān)于用數(shù)據(jù)庫作為購物車的原理

我來解答一下你的疑惑

買了兩個產(chǎn)品。那就是執(zhí)行了兩次

insert

into

temp_table

(uid,productid,pnum,poneprice,ptotalprice)

如果

productid相同則，

pnum

=

pnum+1;

ptotalprice

=

pnum*poneprice

假設(shè)前提是

當(dāng)前兩條記錄的產(chǎn)品不同，那么購物車列表則是循環(huán)讀取temp_table列出現(xiàn)有符合條件之產(chǎn)品，數(shù)量，價格。

修改2個產(chǎn)品數(shù)量的時候，

提交后，同樣的文本框pnum為一個數(shù)組，productid為一個數(shù)組

獲取pnum,productid,并且用

split分析后，

分別update

update

temp_table

set

pnum='".$pnum[0]."',ptotalprice='..省略.'

where

uid=自己的uid

and

productid='".$productid[0]."'

注意，這里數(shù)組下標(biāo)要對應(yīng)好，你可以用個循環(huán)。

最后，當(dāng)訂單下好之后，要把臨時表的數(shù)據(jù)轉(zhuǎn)移到正式表中，并且清理掉當(dāng)前這個用戶臨時表的內(nèi)容即可。

本文題目：php購物車建立數(shù)據(jù)庫 php購物車訂單處理
新聞來源：http://chinadenli.net/article46/hgopeg.html

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