1.先在mysql 中建表 userinfo 加字段 userid username password
2.登錄頁面login.htm
<html>
<body>
<form action="login.php" method="post">
用戶名<input type="text" name="name"/><br>
密碼<input type="password" name="password"/><br>
<input type="submit" value="login" name="login"/>
</form>
</body>
</html>
3. 跳轉頁面 success.htm
<html>
<head>
<title>success
</title>
</head>
<body>
<h1>Success</h1>
</body>
</html>
4.後臺login.php
<?php
error_reporting(0);
$mysql_servername = "localhost"; //主機地址
$mysql_username = "root"; //數據庫用戶名
$mysql_password ="123456"; //數據庫密碼
此處爲自己設置的密碼
$mysql_database ="test"; //數據庫 此處爲數據庫名
mysql_connect($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");//跳轉頁面，注意路徑
exit;
}
echo "<script language=javascript>alert('用戶名密碼錯誤');history.back();</script>";
}else {
echo "<script language=javascript>alert('用戶名密碼不能爲空');history.back();</script>";
}
?>
應該可以了.