Untitled

<html>
<head>
<title>Login</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<?php if($_POST['submit'])
{
header('Location: index.php');
}?>
<form method="post">
Username: <input type="text" name="username"></input><br>
Password: <input type="password" name="password"></input><br>
<input type="submit" name="submit" value="Login"></input>
</form>
</body>
</html>