function showf($mode=1){
if ($mode==1)
{$admin_f="admin.php";}
else
{
$admin_f="admin.php?doaction=sys";
}
?>

用户:
密码:

$admin = false;
session_start();
if (isset($_SESSION["admin"]) )
{
echo "

您已经成功登陆-->

";
if(isset($_GET['doaction']))
{
$doaction = $_GET['doaction'];
switch($doaction){
case 'sys':
echo"系统设置-->";
if($Submit)
{
foreach ($posts as $key => $value)
{ $posts[$key] = trim($value); }
$password=md5($password);
$conn->execute("update [php_admin] set [szd_user]='$username',[szd_password]='$password'");
echo "成功,2秒后返回";
echo "";

}else{
showf(2);
}
break;
case 'logout':
session_start();
unset($_SESSION["admin"]);
header('location:index.php');
die;
break;
case 'delete':
$conn->execute("delete * from [php_guest] where id=$id") ;
echo "删除成功,2秒后返回";
echo "";
die;
break;
case 'editor':
if($Submit)
{ $posts = $_POST;
foreach ($posts as $key => $value)
{ $posts[$key] = trim($value);

}

$conn->execute("update [php_guest] set [szd_user]='$user',[szd_title]='$title',[szd_qq]='$qq',[szd_content]='$ly',[szd_rep]='$rep' where id=$id");
header("location:index.php");
}

else
{
$rs=$conn->execute("select * from [php_guest] where id=$id");
if($rs->eof and $rs->bof){
header("location:index.php");
die;}
require_once('postfunction.php');
postfunction($rs->fields[1],$rs->fields[3],$rs->fields[2],$rs->fields[4],$rs->fields[0],$rs->fields[6],2); }

default:
break;

}
}else
{
?>

• 系统设置


• 退出登陆

}
else
{
?>
if($Submit){
$posts = $_POST;
foreach ($posts as $key => $value)
{
$posts[$key] = trim($value);
}
$password = md5($posts["password"]);
$username = $posts["username"];
if (empty($password)||empty($username))
{echo "";
echo "";
echo "";
exit();}
$query = "SELECT id FROM [php_admin] WHERE [szd_password] = '$password' and [szd_user]='$username'";
$userInfo = $conn->execute($query);
if (!($userInfo->eof and $userInfo->bof ))
{
session_start();
$_SESSION["admin"] = 1;
header('location:admin.php');
}
else
{
echo "";
echo "";
echo "";
exit();
}
}
else
{
showf();
}
?>

\\1

--------------------------
\\1
--------------------------