PHP怎么做购物车？

购物车有两种实现方式，一种是保存在数据库，另外一种是session

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保存在数据库的不会以为关闭浏览器而消失，session会因为关闭浏览器就没有了。

原理是把每个商品的信息存到一个数组里面，然后以这个商品的id作为键值，然后吧数组存到session里面就行，

如果是存入数据库的话，就用关联数据存一下就行的

请教关于PHP购物车代码的数据库表和字段

PHP Code

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 实现 购物车 提交到 订单的数据库

用户登陆后系统应该会分配一个session ： id，这个id应该是改用于的用户表id。然后再做一个购物车的表，里面可以只考虑存商品id、用户id等关键信息；

当用户提交购买的时候再做相关的操作，具体可以参考淘宝、天猫的购物车已经后续付款效果。

php+MySQL购物车模块怎么做？

参照ecshop购物车功能。在核心文件，即客户第一次访问网站既生成一个字符串session，设定session的生存时间，防止因客户不操作而session一直存在。 cart表中就不说了。客户没有登录的时候用原始生成的session，添加购物车就插入数据好了。如果客户登录了，修改cart表中的uid 。

设计一个购物车，包含html和php两个文件，html让客户输入个人信息以及显示商品信息。php将订单信息返回给

订单表，客户信息表，商品信息表，购物车表存放客户信息表，商品信息表的主键id，用来关联，并且建立一个数量的字段，用来计算总价。客户录入表单去提交页面添加判断然后跳转购物页，添加购物车的话直接基于数量和两个主键id去添加，下单的话基于时间戳生成订单编号和客户编号存放在订单表中，记得主外键关联

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