1.先在mysql 中建表 userinfo 加字段 userid username password
2.登录页面login.htm
<html>
<body>
<form action="login.php" method="post">
用户名<input type="text" name="name"/><br>
密码<input type="password" name="password"/><br>
<input type="submit" value="login" name="login"/>
</form>
</body>
</html>
3. 跳转页面 success.htm
<html>
<head>
<title>success
</title>
</head>
<body>
<h1>Success</h1>
</body>
</html>
4.后台login.php
<?php
error_reporting(0);
$mysql_servername = "localhost"; //主机地址
$mysql_username = "root"; //数据库用户名
$mysql_password ="123456"; //数据库密码
此处为自己设置的密码
$mysql_database ="test"; //数据库 此处为数据库名
mysql_connect($mysql_servername , $mysql_username , $mysql_password);
mysql_select_db($mysql_database);
$name=$_POST['name'];
$passowrd=$_POST['password'];
if ($name && $passowrd){
$sql = "SELECT * FROM userinfo WHERE username = '$name' andpassword='$passowrd'";
//字段名
$res = mysql_query($sql);
$rows=mysql_num_rows($res);
if($rows){
header("refresh:0;url=success.htm");//跳转页面，注意路径
exit;
}
echo "<script language=javascript>alert('用户名密码错误');history.back();</script>";
}else {
echo "<script language=javascript>alert('用户名密码不能为空');history.back();</script>";
}
?>
应该可以了.