php 用户登录验证

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<h1>登陆界面</h1>
<form action="huihuachuli.php" method="post">
<div>用户名：<input type="text" name="uid" /></div>
<div>密码：<input type="password" name="pwd" /></div>
<input type="submit" value="登陆" />
</form>
</body>
</html>

View Code

<?php
session_start();
include("DBDA.php");
$db=new DBDA();

$uid=$_POST["uid"];
$pwd=$_POST["pwd"];

$sql="select pwd from users where uid='{$uid}'";

$mima=$db->StrQuery($sql);

if($pwd==$mima)
{
    $_SESSION["uid"]=$uid;
    header("location:zhuye.php");
}
else
{
    echo "用户名或密码错误";    
}

View Code