8、updatepost(修改提交页)
<php
require_once('conn.php');
$username = $_POST['name'];
$info = $_POST['info'];
$id = $_GET['id'];
//echo $id;
$sql = "update lo set username= '".$username."',info='".$info."' where<script>alert('修改成功！');location.href='index.php';</script>";
>
9、delete.php(删除留言页)
<php
session_start();
require_once('conn.php');
$id=$_GET['id'];
if($_SESSION["key"]==1)
{
$sql = "delete from lo where<script>location.href='index.php'</script>";
}
else
{
header('location:index.php');
}
>
10、admin.php(管理登录页)
<php
require_once('conn.php');
require_once('header.php');
>
<div>
<form method="post" action="adminpost.php">
<h1>管理员登录</h1>
<p>姓名 : <input type="text" size="20" /> </p>
<p>密码 : <input type="password" size="20" /> </p>
<p><input type="submit" value="管理员登录" /></p>
<p>银子留言板 Version 1.0</p>
</form>
</div>
11、adminpost.php(管理验证页)
<php
session_start();
require_once('conn.php');
$name = $_POST['name'];
$password = $_POST['password'];
$sql = "select * from admin where";
$result = mysql_query($sql);
$num = mysql_num_rows($result);
if (strrpos($name,"<")!==false || strrpos($name,">")!==false||strrpos($name,"@")!==false||strrpos($name,"\"")!==false||strrpos($name,"'")!==false||strrpos($name,"_")!==false)
{
echo "<script>alert('不能有特殊字符！');location.href='admin.php';</script>";
}
if($num)
{//如果用户存在，就检查密码是否正确
$rs = mysql_fetch_array($result);
if($rs[2]!=$password)
{
echo "<script>alert('密码不正确，请确认后输入！');location.href='admin.php';</script>";
}
else
{//用户名，密码都正确，注册SESSION变量，然后跳转到首页
$_SESSION["key"]=1;
echo "<script>alert('登录成功！');location.href='index.php';</script>";
}
}
else
{//如果没有这个用户
echo "<script>alert('没有这个用户，请确认后输入！');location.href='admin.php';</script>";
}
>
12、adminexit.php(退出管理页)
<php
session_start();
$_SESSION["key"] = 0;//使SESSION不为1，0为游客，1为管理员
header('location:index.php');
>
只是些基本的东东，像MD5加密，UBB，表情图片,添加管理员账号，回复留言(-_!!)等我都没加上去，有兴趣的同学可以完善下，不足的地方请指出^_^
管理员账号:wuleying 密码:123456