php购物车实例

时间：2015-01-23 来源：西部数据作者：西部数据

这里又提供一款php购物车实例代码,这是一款适合种位要开发商城或购物系统参考的开发实例了,告诉你如果增加商品到购物并删除,与购物车的数据库设计实例.

inventory表,代码如下:

create table inventory (

  product tinytext not null,

  quantity tinytext not null,

  id int(4) default '0' not null auto_increment,

  description tinytext not null,

  price float(10,2) default '0.00' not null,

  category char(1) default '' not null,

  key id (id),

  primary key (id),

  key price (price)

);

insert into inventory values ('硬盘','5','1','80g','5600','1');

insert into inventory values ('cpu','12','2','p4-2.4g','6600','1');

insert into inventory values ('dvd-rom','7','3','12x','2000','1');

insert into inventory values ('主板','3','4','asus','5000','2');

insert into inventory values ('显示卡','6','5','64m','4500','1');

insert into inventory values ('刻录机','4','6','52w','3000','1');

shoping表

create table shopping (

  session tinytext not null,

  product tinytext not null,

  quantity tinytext not null,

  card tinytext not null,

  id int(4) default '0' not null auto_increment,

  key id (id),

  primary key (id)

);

shoper表

create database shopper;

use shopper;

create table shopping (

  session tinytext not null,

  product tinytext not null,

  quantity tinytext not null,

  card tinytext not null,

  id int(4) default '0' not null auto_increment,

  key id (id),

  primary key (id)

);

create table inventory (

  product tinytext not null,

  quantity tinytext not null,

  id int(4) default '0' not null auto_increment,

  description tinytext not null,

  price float(10,2) default '0.00' not null,

  category char(1) default '' not null,

  key id (id),

  primary key (id),

  key price (price)

);

insert into inventory values ('硬盘','5','1','80g','5600','1');

insert into inventory values ('cpu','12','2','p4-2.4g','6600','1');

insert into inventory values ('dvd-rom','7','3','12x','2000','1');

insert into inventory values ('主板','3','4','asus','5000','2');

insert into inventory values ('显示卡','6','5','64m','4500','1');

insert into inventory values ('刻录机','4','6','52w','3000','1');

main.php购物页面,代码如下:

/*mysql --user=root --password=your_password */

include("shoppingcart.php");

$cart = new cart;

$table="shopping";

/* 查询并显示所有存货表中的信息 */

    $query = "select * from inventory";

    $invresult = mysql_query($query);

    if (!($invresult)) {

       echo "查询失败<br>";

       exit;

    }

    echo "以下产品可供订购∶";

    echo "<table border=0>";

    echo "<tr><td bgcolor=#aaccff>产品编号</td><td bgcolor=#aaccff>产品名称</td><td bgcolor=#aaccff>单价</td>";

    echo "<td bgcolor=#aaccff>剩余数量</td><td bgcolor=#aaccff>产品描述</td><td bgcolor=#aaccff>放入购物车</td></tr>";

    while($row_inventory = mysql_fetch_object($invresult)) {

    echo "<tr><td bgcolor=#aaccff>".$row_inventory->id."</td>";

    echo "<td bgcolor=#aaccff>".$row_inventory->product."</td>";

    echo "<td bgcolor=#aaccff>".$row_inventory->price."</td>";

    echo "<td bgcolor=#aaccff>".$row_inventory->quantity."</td>";

    echo "<td bgcolor=#aaccff>".$row_inventory->description."</td>";

    echo "<td bgcolor=#aaccff><a href='additem.php?product=".$row_inventory->product."'><img border='0' src='cart.gif' width='81' height='17'></a></td></tr>";

    }

    echo "</table>";

    echo "<br>购物车中产品的数量∶".$cart->quant_items($table, $session);

    echo "<br><br><a href='clearcart.php'><img border='0' src='car.gif'></a>清空购物车";

//shoppingcart.php代码

<?php

    if (!$session && !$s) {

        $s = md5(uniqid(rand()));

        setcookie("session", "$s", time() + 14400);

    }

/* 检查是否有 seesion, 如果没有产生一个 md5 的唯一 id, 并利用 cookie 存入 $s 中。

并且设置其存在时间为 14400 sec 也就是 4 小时 */

    $mysql_link = mysql_connect("127.0.0.1", "root", "test");

    if (!($mysql_link)) {

       echo "连接数据库失败<br>";

       exit;

    }

    $mysql_select=mysql_select_db("shopper", $mysql_link);

    if (!($mysql_select)) {

       echo "打开数据库失败<br>";

       exit;

    }

/* 购物车 class */

   class cart {

        function check_item($table, $session, $product) {

            $query = "select * from $table where session='$session' and product='$product' ";

            $result = mysql_query($query);



            if(!$result) {

                return 0;

            }

            $numrows = mysql_num_rows($result);

            if($numrows == 0) {

                return 0;

            } else {

                $row = mysql_fetch_object($result);

                return $row->quantity;

            }

        }

        function add_item($table, $session, $product, $quantity) {

            $qty = $this->check_item($table, $session, $product);

            if($qty == 0) {

                $query = "insert into $table (session, product, quantity) values ";

                $query .= "('$session', '$product', '$quantity') ";

                mysql_query($query);

            } else {

                $quantity += $qty;

                $query = "update $table set quantity='$quantity' where session='$session' and ";

                $query .= "product='$product' ";

                mysql_query($query);

            }

        }



        function delete_item($table, $session, $product) {

            $query = "delete from $table where session='$session' and product='$product' ";

            mysql_query($query);

        }



        function modify_quantity($table, $session, $product, $quantity) {

            $query = "update $table set quantity='$quantity' where session='$session' ";

            $query .= "and product='$product' ";

            mysql_query($query);

        }



        function clear_cart($table, $session) {

            $query = "delete from $table where session='$session' ";

            mysql_query($query);

        }



        function cart_total($table, $session) {

            $query = "select * from $table where session='$session' ";

            $result = mysql_query($query);

            if(mysql_num_rows($result) > 0) {

                while($row = mysql_fetch_object($result)) {

                    $query = "select price from inventory where product='$row->product' ";

                    $invresult = mysql_query($query);

                    $row_price = mysql_fetch_object($invresult);

                    $total += ($row_price->price * $row->quantity);

                }

            }

            return $total;

        }



                $count++;

            }

    echo "</table>";

            $total = $this->cart_total($table, $session);

            $contents["final"] = $total;

            return $contents;

        }



        function num_items($table, $session) {

            $query = "select * from $table where session='$session' ";

            $result = mysql_query($query);

            $num_rows = mysql_num_rows($result);

            return $num_rows;

        }



        function quant_items($table, $session) {

            $quant = 0;

            $query = "select * from $table where session='$session' ";

            $result = mysql_query($query);

            while($row = mysql_fetch_object($result)) {

                $quant += $row->quantity;

            }

            return $quant;

        }

    }

//增加到购物车

include("shoppingcart.php");

$cart = new cart;

$table="shopping";

echo "你的购物清单∶<br>";

$cart->add_item($table,$session,$product,'1');

$cart->display_contents($table, $session);

echo "<br>你的购物总金额∶".$cart->cart_total($table, $session);

echo "<br><form action='main.php'>";

echo "<input type=submit value='继续购物'>";

echo "</form>";//开源代码phpfensi.com

//清空购物车

include("shoppingcart.php");

$cart = new cart;

$table="shopping";

$cart->clear_cart($table, $session);

echo "购物车中产品的数量∶".$cart->num_items($table, $session);

echo "<form action='main.php'>";

echo "<input type=submit value='继续购物'>";

echo "</form>";