Untitled

//login.php
<?php
session_start();
        if($_REQUEST['username'] == "admin") {
            header("Location: adminview.php");
            } else {
        include('connectMySQL.php');
        $db = new MySQLDatabase();
        $db->connect("test", "test", "messageboard");
        $query = "select username,password from users";
        $result = mysql_query($query);
            if($result) {
        while($row = mysql_fetch_array($result)){
            if($_REQUEST['username'] == $row['username'] && $_REQUEST['password']==$row['password']) {
            $_SESSION['username'] = $row['username'];
            $_SESSION['password'] = $row['password'];
            header("Location: view.php");
            }
        }
        }

    else {
        die(mysql_error());
    }
            $_SESSION['loginIncorrect'] = true;
            header("Location: form.php");

        $db->disconnect();
        }
 ?>


// form.php

<?php


session_start();

if(isset($_SESSION['username']) && isset($_SESSION['password'])){
if($_GET['username'] == "admin" && $_GET['password'] == "secret") {
    header("Location: adminview.php");
}  else {
   header("Location: view.php");
   }
}
?>
<html>

<head>
<meta http-equiv="Content-Language" content="zh-tw" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Nice Form</title>
<link rel="stylesheet" href="css/formStyle.css" type="text/css" />
</head>

<body>
<br />

<?php
if(isset($_SESSION['loginIncorrect'])){
?>
<p align="center"><b>Incorrect username/password combination! Please try again.</b></p>
<?php
unset($_SESSION['loginIncorrect']);
}
?>

<form method="POST" action="login.php">
    <div align="center">
        <table border="0" width="300" class="border">
            <tbody>
            <tr>
                <td colspan="2" class="heading" height="26" align="center">Login
                Information</td>
            </tr>
            <tr>
                <td width="82" class="content">Username:</td>
                <td width="202">
                <input type="text" name="username" size="20" class="content" /></td>
            </tr>
            <tr>
                <td width="82" class="content">Password:</td>
                <td width="202">
                <input type="password" name="password" size="20" class="content" /></td>
            </tr>
            <tr>
                <td width="82">&nbsp;</td>
                <td width="202">
                <input type="submit" value="Submit" name="submit" class="content" /><input type="reset" value="Reset" class="content" /></td>
            </tr>
        </tbody>
        </table>
    </div>
</form>
<a href="register.php">Register</a>
</body>

</html>