
我去写个,贴出来,【嘿嘿,今天上午新写的】。
我懒得新建数据库,用的是我的数据库。
你按照我的改一下就能用了
本人水平有限,高手请指正。
你,大,爷的,虽然不咋地,保证能用
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经过调试,
//$my->add_cart(45,3,"茶几系列")//新增购物
//$my->updata_cart(13,13,8)//更新购物
//$my->del_cart(12,5,'Guest') //删除一种购物
//$my->empty_cart('Guest') //清空购物车
$ok=$my->get_cart('Guest') //返回购物车
这些都可用
-------------------------------------------------------------------
<?php
class Cart
{
public $totalCost=0 //商品总金额
function cart($host,$usr,$pwd,$db)
{
mysql_connect($host,$usr,$pwd) or die(mysql_error)
mysql_select_db($db) or die(mysql_error)
mysql_query("SET Names GBk")
//只要有人访问,就自动清除一天前所有没付款的订单;
$sql="delete FROM shopcart WHERE TO_DAYS( NOW( )) - TO_DAYS( ptime ) >=1 and payment=0"
mysql_query($sql)
}
// d出提示
function alter($Str,$Url)
{
echo "<Script language='JavaScript'>alert('".$Str."')</Script>"
echo "<meta http-equiv=refresh content=0URL=".$Url.">"
}
//增加购物;三个参数:pid:产品ID,ptl:产品数量,pcid:产品类别
//查询数据库,是否存在此人在本日内订过本产品
//如果订过,那么数量累加,否则插入一个数据库行
function add_cart($pid,$ptl=1,$pcid)
{
if($ptl>=100 || $ptl<=0)
{
$this->alter("最多买99件,最少1件","index.php")
die()
}
if(!$_SESSION['usr']) { $usr='Guest'}
else{ $usr=$_SESSION['usr']}
$sql="select * from shopcart where pid='".$pid."' and usr='".$usr."' and pcid='".$pcid."'"
$ex=mysql_query($sql)
$ex1=mysql_fetch_array($ex)
if(!$ex1)
{
$sql="select * from product where ID='".$pid."' and class1='".$pcid."'"
$ok=mysql_query($sql)
$rs=mysql_fetch_array($ok)
if($rs)
{
$totalCost= $rs['Price'] * $ptl
$sql="insert into shopcart(usr,pid,pname,ptl,price,pcid,psum,payment) Values("
$sql.="'".$usr."',"
$sql.="'".$rs['ID']."',"
$sql.="'".$rs['Name']."',"
$sql.="'".$ptl."',"
$sql.="'".$rs['Price']."',"
$sql.="'".$rs['Class1']."',"
$sql.="'".$totalCost."',"
$sql.="'0')"
mysql_query($sql) or die(mysql_error())
if($ok) { $this->alter("购物成功","index.php")}
else{ $this->alter("购物失败","index.php")}
}
else
{
$this->alter("不存在的商品,或者参数错误","index.php")
die()
}
}
else
{
$sql="update shopcart set ptl= ptl+1,psum = psum+price where ID='".$ex1['ID']."'"
mysql_query($sql)
$this->alter("更新数量成功","index.php")
}
}
//更新购物车的单个产品的数量;
function updata_cart($cid,$ptl,$pid)
{
if($ptl>=100||$ptl<=0)
{
$this->alter('产品数量不对!','index.php')
die()
}
$sql="select * from shopcart where ID='".$cid."' and pid='".$pid."'"
$ok=mysql_query($sql)
if(!ok) { alter("参数发生错误","index.php")}
else
{
$sql="update shopcart set ptl='".$ptl."',psum=price * '".$ptl."' where ID='".$cid."' and pid='".$pid."'"
$ok=mysql_query($sql)
if(!ok) { $this->alter("更新失败","index.php")}
else{ $this->alter("更新成功","index.php")}
}
}
function del_cart($cid,$pid,$usr)
{
$sql="delete from shopcart where usr='".$usr."' and ID='".$cid."' and pid='".$pid."'"
$ok=mysql_query($sql)
if(!$ok) {$this->alter("删除失败","index.php")}
else {$this->alter("删除成功","index.php")}
}
function empty_cart($usr)
{
$sql="delete from shopcart where usr='".$usr."'"
mysql_query($sql) or die(mysql_error)
}
function get_cart($usr)
{
$sql="select * from shopcart where usr='".$usr."'"
$ok=mysql_query($sql)
return $ok
}
}
$my = new Cart("localhost","root","root","mybbs")
//$my->add_cart(45,3,"茶几系列")
//$my->updata_cart(13,13,8)
//$my->del_cart(12,5,'Guest')
//$my->empty_cart('Guest')
$ok=$my->get_cart('Admin')
echo "usr pid pname ptl price pcid psum payment ptime <br><hr><br>"
while($rs=mysql_fetch_array($ok))
{
echo $rs[1]."->".$rs[2]."->".$rs[3]."->".$rs[4]."->".$rs[5]."->".$rs[6]."->".$rs[7]."->".$rs[8]."->".$rs[9]."<br>"
}
?>
、、、、、、、、、、、、、、、、、SQL、、、、、、、、、、、、、、
CREATE TABLE IF NOT EXISTS `shopcart` (
`ID` int(10) NOT NULL auto_increment,
`usr` varchar(50) NOT NULL,
`pid` int(5) NOT NULL,
`pname` varchar(100) NOT NULL,
`ptl` int(3) NOT NULL,
`price` decimal(50,2) NOT NULL default '0.00',
`pcid` varchar(100) NOT NULL,
`psum` decimal(50,2) NOT NULL default '0.00',
`payment` tinyint(1) NOT NULL,
`ptime` timestamp NOT NULL default CURRENT_TIMESTAMP,
PRIMARY KEY (`ID`)
)
product 里面用的ID CLASS1是
`ID` int(6) NOT NULL auto_increment,
`Class1` varchar(20) NOT NULL,
`Price` int(6) NOT NULL,
在数据库中弄一个设置一个数组字段,然后接受IDSQL语句查询,正常输出;
打算数组:
$infoarray=explode('|,|',$row[infoarray'])
然后输出:
<?php echo infoarray$infoarray[0]?>//例如:数量
<?php echo infoarray$infoarray[1]?> //例如:单价(当然可以更多...)
<?php $sql= "SELECT sum(num) AS total FROM `cookes`"$rec = mysql_query($sql)
$row = mysql_fetch_array($rec)
echo $row[0]
?>
或者笨办法:
<?php
$sql= "SELECT * FROM `cookes`"
$rec = mysql_query($sql)
$total = 0
while($row = mysql_fetch_array($rec))
{
$total +=$row[num]
}
echo $total
?>
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