试下这代码 把参数改成你自己的<?phpinclude("conn1.php");$count=mysql_query("select count(*) from uu where u_user='$_POST[uuser]' AND u_pass='$_POST[upass]'"); //获得记录总数$rs=mysql_fetch_array($count);$totalNumber=$rs[0];if ($totalNumber>0) {session_start();$_SESSION["user1"]=$_POST[uuser];echo "登陆成功！！3s后跳转主页";header("Refresh:3;url=index.php");}else{echo "登陆失败！！账号密码错误或账号不存在、3s后返回登陆页";header("Refresh:3;url=denglu.php");}?>