php问题，求救

来源：百度知道 编辑：UC知道 时间：2024/06/08 07:11:12
<?
include "lib/config.php";
include "lib/class.php";
$my=new myclass();
$my->c_all($db_host,$db_user,$db_psw,$db_table);
$id=$_GET['id'];
$u_name=$_GET['u_name'];
$psw=$_GET['psw'];
$exc_class=$_GET['exc_class'];

$query="select * from td_sh_user where user='$u_name' and mdpass='$psw'";
$res_show=$my->query($query);
$number=$my->num_rows($res_show);
if($number){ //验证用户是否登录
$query="select * from cart where good_id='$id' and user='$u_name'";
$res=$my->query($query);
$show_number=$my->num_rows($res);
if($show_number){ //若商品存在则商品数目加1
$query="update cart set number=number+1";
$res_show=$my->query($query);
if($res_show){
echo "商品数目增加成功！";
}else{
echo "商品数目增加失败！";
}
}else{

if($number==0){ 前面少了个"}"符号.

如下:
<?
include "lib/config.php";
include "lib/class.php";
$my=new myclass();
$my->c_all($db_host,$db_user,$db_psw,$db_table);
$id=$_GET['id'];
$u_name=$_GET['u_name'];
$psw=$_GET['psw'];
$exc_class=$_GET['exc_class'];

$query="select * from td_sh_user where user='$u_name' and mdpass='$psw'";
$res_show=$my->query($query);
$number=$my->num_rows($res_show);
if($number){ //验证用户是否登录
$query="select * from cart where good_id='$id' and user='$u_name'";
$res=$my->query($query);
$show_number=$my->num_rows($res);
if($show_number){ //若商品存在则商品数目加1
$query="update cart set number=number+1";
$res_show=$my->query($query);
if($res_show){
echo "商品数目增加成功！";
}else{