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PHP购物车模块的实现（php/ajax/session）
购物车网页代码
1.登录界面login.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" /><script src="../jquery-1.11.2.min.js"></script><title>无标题文档</title></head><body><div>用户名：<input type="text" id="uid" /></div><div>密码：<input type="text" id="pwd" /></div><input type="button" value="登录" id="btn" /></body><script type="text/javascript">$("#btn").click(function(){ var uid = $("#uid").val(); var pwd = $("#pwd").val(); $.ajax({ url:"loginchuli.php", data:{u:uid,p:pwd}, type:"POST", dataType:"TEXT", success: function(data){ if(data.trim()=="OK") { window.location.href="main.php"; } else { alert("用户名或密码错误"); } } }) })</script></html>
2.登录处理页面loginchuli.php
<?phpsession_start();include("../DBDA.class.php");$db = new DBDA();$uid = $_POST["u"];$pwd = $_POST["p"];$sql = "select password from login where username=‘{$uid}‘";$mm = $db->StrQuery($sql);if($mm==$pwd && $pwd!=""){ $UserName = $_POST["uid"]; $_SESSION["uid"]=$uid; echo "OK";}else{ echo "NO";}3.主页面main.php
<?phpsession_start();include("../DBDA.class.php");$db = new DBDA();?><!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><br /><style type="text/css">.list{ width:100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}</style></head><body><div style="width:100%; height:100px; background-color:#6CC"> <h1 style="float:left">大苹果商城</h1> <a style="float:right; margin-top:40px" href="zhuxiao.php">注销</a></div><br /><div style="width:100%; height:600px"> <div id="left" style="width:20%; float:left"> <a href="main.php"><div class="list">浏览商品</div></a> <a href="zhanghu.php"><div class="list">查看账户</div></a> <a href="gouwuche.php"><div class="list">查看购物车</div></a> </div> <div id="right" style="width:80%; float:left"><?php $agwc = array(); if(!empty($_SESSION["gwc"])) { $agwc = $_SESSION["gwc"]; } $zhonglei = count($agwc); $sum = 0; foreach($agwc as $v) { $sql = "select price from fruit where ids=‘{$v[0]}‘"; $danjia = $db->StrQuery($sql); $sum = $sum +$danjia*$v[1]; } echo "<div>购物车中有:{$zhonglei}种商品，总价格为:{$sum}元.</div>"; ?> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>代号</td> <td>水果名称</td> <td>水果价格</td> <td>源产地</td> <td>库存量</td> <td>操作</td> </tr> <?php $sql = "select * from fruit"; $attr = $db->Query($sql); foreach($attr as $v) { echo "<tr><td>{$v[0]}</td> <td>{$v[1]}</td> <td>{$v[2]}</td> <td>{$v[3]}</td> <td>{$v[4]}</td> <td><a href=http://www.mamicode.com/‘goumai.php?code={$v[0]}‘>购买</a></td></tr>"; } ?> </table> </div></div></body></html>
4.购买处理页面goumai.php
<?phpsession_start();$code = $_GET["code"];if(empty($_SESSION["gwc"])){ //第一次点击购买 $attr = array( array($code,1) ); $_SESSION["gwc"] = $attr;}else{ //不是第一次点击购买 $attr = $_SESSION["gwc"]; $bs=0; foreach($attr as $k=>$v) { if($v[0]==$code) { $bs=1; $attr[$k][1] = $attr[$k][1]+1; } } //如果没有在数组里面出现 if($bs==0) { $shuzu = array($code,1); $attr[] = $shuzu; } $_SESSION["gwc"]=$attr; }header("location:main.php");5.订单处理页面，计算选取水果的总价，和水果剩余量。dingdan.php
<?phpsession_start();include("../DBDA.class.php");$db = new DBDA();$uid = $_SESSION["uid"];$attr = array();if(!empty($_SESSION["gwc"])){ $attr = $_SESSION["gwc"];}//看下两个条件是否都满足$bs = true;//判断余额是否满足 //根据用户名找余额 $syue = "select account from login where username=‘{$uid}‘"; $yue = $db->StrQuery($syue); //根据购物车数组取总金额 $sum = 0; foreach($attr as $v) { $sql = "select price from fruit where ids=‘{$v[0]}‘"; $danjia = $db->StrQuery($sql); $sum = $sum +$danjia*$v[1]; } if($yue<$sum) { $bs = false; echo "YEBUZU"; exit; } //判断库存是否满足foreach($attr as $v){ $skucun = "select name,numbers from fruit where ids=‘{$v[0]}‘"; $akucun = $db->Query($skucun); if($akucun[0][1]<$v[1]) { $bs = false; echo "{$akucun[0][0]}库存不足！"; exit; }}//添加订单，减库存，减余额if($bs){ //减库存 foreach($attr as $v) { $sql = "update fruit set numbers = numbers-{$v[1]} where ids=‘{$v[0]}‘"; $db->Query($sql,0); } //减余额 $jianyue="update login set account=account-{$sum} where username=‘{$uid}‘"; $db->Query($jianyue,0); //添加订单 $dingdanhao = $uid+date("YmdHis"); $t = time(); $sorder = "insert into orders values(‘{$dingdanhao}‘,‘{$uid}‘,‘{$t}‘)"; $db->Query($sorder,0); foreach($attr as $v) { $sxq = "insert into orderdetails values(‘‘,‘{$dingdanhao}‘,‘{$v[0]}‘,‘{$v[1]}‘)"; $db->Query($sxq,0); }}echo "OK";6.购物车页面
<?phpsession_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><br /><style type="text/css">.list{ width:100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}</style><script src="../../jquery-1.11.2.min.js"></script></head><body><div style="width:100%; height:100px; background-color:#6CC"> <h1 style="float:left">大苹果商城</h1> <a style="float:right; margin-top:40px" href="zhuxiao.php">注销</a></div><br /><div style="width:100%; height:600px"> <div id="left" style="width:20%; float:left"> <a href="main.php"><div class="list">浏览商品</div></a> <a href="zhanghu.php"><div class="list">查看账户</div></a> <a href="gouwuche.php"><div class="list">查看购物车</div></a> </div> <div id="right" style="width:80%; float:left"> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>商品名称</td> <td>商品单价</td> <td>购买数量</td> <td>操作</td> </tr><?php include("../DBDA.class.php"); $db = new DBDA(); $attr=array(); if(!empty($_SESSION["gwc"])) { $attr = $_SESSION["gwc"]; } foreach($attr as $k=>$v) { $sql = "select name,price from fruit where ids=‘{$v[0]}‘"; $ashuiguo = $db->Query($sql); echo "<tr><td>{$ashuiguo[0][0]}</td><td>{$ashuiguo[0][1]}</td><td>{$v[1]}</td><td><a href=http://www.mamicode.com/‘shanchu.php?sy={$k}‘>删除</a></td></tr>"; } ?> </table> <div id="tj">提交订单</div><div id="ts"></div> </div></div><script type="text/javascript">$("#tj").click(function(){ $.ajax({ url:"dingdan.php", dataType:"TEXT", success: function(data){ if(data.trim()=="OK") { alert("购买成功"); } else if(data.trim()=="YEBUZU") { $("#ts").html("余额不足"); $("#ts").css("color","red"); } else { $("#ts").html(data); $("#ts").css("color","red"); } } }); })</script></body></html>
7.购物车页面删除处理页面shanchu.php
<?phpsession_start();$sy = $_GET["sy"];$attr = $_SESSION["gwc"];if($attr[$sy][1]>1){ $attr[$sy][1] = $attr[$sy][1]-1;}else{ unset($attr[$sy]); $attr = array_values($attr);}$_SESSION["gwc"]=$attr;header("location:gouwuche.php");8.账户余额页面zhanghu.php
<?phpsession_start();$uid = $_SESSION[‘uid‘];?><!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><br /><style type="text/css">.list{ width:100%; height:30px; margin-top:10px; text-align:center; line-height:30px; vertical-align:middle}</style></head><body><div style="width:100%; height:100px; background-color:#6CC"> <h1 style="float:left">大苹果商城</h1> <a style="float:right; margin-top:40px" href="zhuxiao.php">注销</a></div><br /><div style="width:100%; height:600px"> <div id="left" style="width:20%; float:left"> <a href="main.php"><div class="list">浏览商品</div></a> <a href="zhanghu.php"><div class="list">查看账户</div></a> <a href="gouwuche.php"><div class="list">查看购物车</div></a> </div> <div id="right" style="width:80%; height:150px; float:left"><?php include("../DBDA.class.php"); $db = new DBDA(); $sql = "select Account from login where UserName=‘{$uid}‘"; $result = $db->strQuery($sql); echo ("您的账户中还剩余".$result); ?> </div></div></body></html>
PHP购物车模块的实现（php/ajax/session）
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