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简单购物车的实现,session的使用

时间:2015-10-12 09:14:56      阅读:465      评论:0      收藏:0      [点我收藏+]

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购物车浏览商品界面代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <link rel="stylesheet" href="888.css" type="text/css" /> <script> function test() { if(!confirm(确认购买吗?)) return false; } </script> </head> <body> <div id="banner"></div> <div id="link"> <ul type="none"> <li><a href="888_ok.php">浏览图书</a></li> <li><a href="shop888.php">查看购物车</a></li> <li><a href="clearshop.php">清空购物车</a></li> </ul> </div> <div id="show"> <table width="90%" align="center" border="0" cellpadding="0" cellspacing="0"> <tr> <td width="5%" valign="middle"> <td width="5%" align="center">id</td> <td width="20%" align="center">书名</td> <td width="10%" align="center">价格</td> <td width="30%" align="center">出版日期</td> <td width="10%" align="center">类型</td> </tr> <?php include_once("../conn/conn.php"); $sqlstr="select * from tb_demo01 order by id"; $result=mysql_query($sqlstr,$conn); while($rows=mysql_fetch_array($result)) { echo"<tr><td align=‘left‘ height=‘25‘> "; echo "<input type=checkbox name=‘chk[]‘ id=‘chk‘ value=".$rows[0].">"; echo"</td>"; for($i=0;$i<count($rows);$i++) { echo"<td align=‘center‘ height=‘25‘>".$rows[$i]."</td>"; } echo"<td><a href=‘addshop11.php?id={$rows[0]}‘ onclick=‘return test()‘>加入购物车</a></td>"; } ?> </div> </body> </html>

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点击加入购物车按钮后进入此页面,获取id进行传值
<?php session_start();//启动会话 ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <link rel="stylesheet" href="shop888.css" type="text/css" /> </head> <body> <div id="banner"></div> <div id="link"> <ul type="none"> <li><h3>添加商品到购物车,返回到<a href="shop888.php">我的购物车</a></h3></li> </ul> </div> <div id="show"> <?php include_once("../conn/conn.php"); $sql="select * from tb_demo01 where id={$_GET[‘id‘]}"; $result=mysql_query($sql,$conn); if(empty($result)||mysql_num_rows($result)==0) { die("没有找到要购买的信息"); } else { $shop=mysql_fetch_array($result); } $shop["num"]=1; //添加一个数量的字段 //var_dump($shop); //如果存在则实现数量的累加,如果不存在则不累加 if(isset($_SESSION["shoplist"][$shop[id]])) { //如果存在,数量++ $_SESSION["shoplist"][$shop[id]][num]++; } else //如果不存在 { $_SESSION["shoplist"][$shop[id]]=$shop; } ?> </div> </body> </html>

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购物车显示页面
<?php session_start(); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <link rel="stylesheet" href="shop888.css" type="text/css" /> <html> <head></head> <body> <div id="banner"></div> <div id="link"> <ul type="none"> <li><h3>我的购物车,返回商城<a href="888_ok.php">继续购买</a></h3></li> </ul> </div> <div id="show"> <table border="1" width=90% cellpadding="0" cellspacing="0"> <tr> <th>id</th> <th>书名</th> <th>价格</th> <th>数量</th> <th>小计</th> <th>日期</th> <th>类型</th> </tr> <?php $sum=0; if(isset($_SESSION["shoplist"])) { foreach($_SESSION["shoplist"] as $value) { echo"<tr>"; echo"<td>{$value[0]}</td>"; echo"<td>{$value[1]}</td>"; echo"<td>{$value[2]}</td>"; echo"<td> <button onclick=window.location.href=updateshop.php?id=$value[0]&num=-1‘‘>-</button> {$value[num]} <button onclick=window.location.href=updateshop.php?id=$value[0]&num=1‘‘>+</button> </td>";//数量 echo"<td>".$value[2]*$value[num]."</td>"; echo"<td>{$value[3]}</td>"; echo"<td>{$value[4]}</td>"; echo"<td><a href=‘clearshop.php?id=$value[0]‘>删除</a></td>"; echo"</tr>"; $sum+=$value[2]*$value[num]; } } ?> <tr> <th>总计金额:</th> <th colspan="6" align="right"><?php echo $sum; ?></th> <td></td> </tr> </table> </div> </body> </html>

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购物车清空页面
<?php session_start();//启动会话 //清空session中的商品 if($_GET[id]) { unset($_SESSION["shoplist"][$_GET[id]]); } else { unset($_SESSION["shoplist"]); } //跳转到购物车界面 header("Location:shop888.php"); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>清空购物车</title> </head> <body> </body> </html>

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简单购物车的实现,session的使用

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原文地址:http://www.cnblogs.com/kangshuai/p/4870635.html

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