下面这个东西有几个问题
1.如果没有登录的时候选择购买,那个提示【请先登录】会出来,但是后面网页会显示Undefined index:admin in.....line 8,就是if(!isset($_SESSION['admin']))那个
2.不管我购买多少种书,那个记录书种类的变量$_SESSION['itemNum']总是为1
3.我在购物车页面显示购物信息时,总价格显示的是单价,没有乘起来
大家帮我看看怎么回事,或者提供好点的购物车代码吧
<?php
include ("include/setting.inc.php");
include ("include/conn.php");
//var $_SESSION['admin'];
session_start();
mysql_query("SET NAMES 'UTF8'");
if(!isset($_SESSION['admin'])&&$_SESSION['admin']==false){
echo '<SCRIPT LANGUAGE="javascript">';
echo "alert('请先登录');";
echo "location.href='login.php'";
echo '</SCRIPT>';
}
else{
$_SESSION['file']=""; //这个是用来记录当前路径,等登录后返回
}
$_SESSION['itemNum']; //记录总共有几种书
$bookid=$_GET['id'];
$str="select * from books where b_id=".$bookid;
$result=mysql_query($str);
$row=mysql_fetch_array($result);
if(isset($_SESSION['$bookid']['id'])){ //判断购物车是否有这个书,有的话数量加1
$_SESSION['$bookid']['booknum']++;
}
else{
$_SESSION['$bookid']['id']=$row['b_id'];
$_SESSION['$bookid']['bookname']=$row['b_name'];
$_SESSION['$bookid']['bookprice']=$row['b_price'];
$_SESSION['$bookid']['booknum']=1;
$_SESSION['$bookid']['booktotal']=$_SESSION['$bookid']['booknum']*$_SESSION['$bookid']['bookprice'];
$_SESSION['itemNum']++;
}
echo $_SESSION['itemNum'];
?>
1.如果没有登录的时候选择购买,那个提示【请先登录】会出来,但是后面网页会显示Undefined index:admin in.....line 8,就是if(!isset($_SESSION['admin']))那个
2.不管我购买多少种书,那个记录书种类的变量$_SESSION['itemNum']总是为1
3.我在购物车页面显示购物信息时,总价格显示的是单价,没有乘起来
大家帮我看看怎么回事,或者提供好点的购物车代码吧
<?php
include ("include/setting.inc.php");
include ("include/conn.php");
//var $_SESSION['admin'];
session_start();
mysql_query("SET NAMES 'UTF8'");
if(!isset($_SESSION['admin'])&&$_SESSION['admin']==false){
echo '<SCRIPT LANGUAGE="javascript">';
echo "alert('请先登录');";
echo "location.href='login.php'";
echo '</SCRIPT>';
}
else{
$_SESSION['file']=""; //这个是用来记录当前路径,等登录后返回
}
$_SESSION['itemNum']; //记录总共有几种书
$bookid=$_GET['id'];
$str="select * from books where b_id=".$bookid;
$result=mysql_query($str);
$row=mysql_fetch_array($result);
if(isset($_SESSION['$bookid']['id'])){ //判断购物车是否有这个书,有的话数量加1
$_SESSION['$bookid']['booknum']++;
}
else{
$_SESSION['$bookid']['id']=$row['b_id'];
$_SESSION['$bookid']['bookname']=$row['b_name'];
$_SESSION['$bookid']['bookprice']=$row['b_price'];
$_SESSION['$bookid']['booknum']=1;
$_SESSION['$bookid']['booktotal']=$_SESSION['$bookid']['booknum']*$_SESSION['$bookid']['bookprice'];
$_SESSION['itemNum']++;
}
echo $_SESSION['itemNum'];
?>
剩下两个我没看懂你代码 - -~..
include ("include/setting.inc.php");
include ("include/conn.php");
session_start();
mysql_query("SET NAMES 'UTF8'");
if(!isset($_SESSION['admin'])&&$_SESSION['admin']==false){
echo '<SCRIPT LANGUAGE="javascript">';
echo "alert('请先登录');";
echo "location.href='login.php'";
echo '</SCRIPT>';
exit;
} else{
$_SESSION['file']=""; //这个是用来记录当前路径,等登录后返回
}
$bookid=$_GET['id'];
$str="select * from books where b_id=".$bookid;
$result=mysql_query($str);
$row=mysql_fetch_array($result);
if(isset($_SESSION['$bookid']['id'])){
//判断购物车是否有这个书,有的话数量加1
$_SESSION['$bookid']['booknum']++;
$_SESSION['$bookid']['booktotal']=$_SESSION['$bookid']['booktotal'] + $_SESSION[$row['b_id']]['bookprice'];
} else{
$_SESSION['$bookid']['id']=$row['b_id'];
$_SESSION['$bookid']['bookname']=$row['b_name'];
$_SESSION['$bookid']['bookprice']=$row['b_price'];
$_SESSION['$bookid']['booknum']=1;
$_SESSION['$bookid']['booktotal']=$_SESSION['$bookid']['booktotal'] + $_SESSION['$bookid']['bookprice'];
//记录总共有几种书
if(isset($_SESSION['itemNum']))
$_SESSION['itemNum']++;
else
$_SESSION['itemNum'] = 1;
}
echo $_SESSION['itemNum']; ?>
if(! is_set($_SESSION['itemNum'])) $_SESSION['itemNum'] = 0;
改成
if(!isset($_SESSION['admin'])||$_SESSION['admin']==false){