Untitled

<?php
	$host = "localhost";
	$user = "root";
	$pass = "pass";
	$db = "SheetPal";
	mysql_connect($host, $user, $pass);
	mysql_select_db($db);

	if (isset($_POST['username'])){
		$username = $_POST['username'];
		$password = $_POST['password'];
		$sql = "SELECT * FROM users WHERE username ='".$username."' AND password = '".$password."' LIMIT 1";
		$res = mysql_query($sql);
		if(mysql_num_rows($res) == 1){
			echo "You have successfully logged in.";
			exit();
		}
		else {
			echo"Invalid login information.";
			exit();
		}
	}
?>

<!DOCTYPE html>
<html >
  <head>
    <meta charset="UTF-8">
    <title>Login Form</title>
        <link rel="stylesheet" href="css/login.css">
  </head>

  <body>

    <body>
	<div class="login">
		<div class="login-screen">
			<div class="app-title">
				<h1>Login</h1>
			</div>

			<div class="login-form role="form" method="post" action="test.php">
				<div class="control-group">
				<input type="text" class="login-field" value="" placeholder="username" id="username">
				<label class="login-field-icon fui-user" for="login-name"></label>
				</div>

				<div class="control-group">
				<input type="password" class="login-field" value="" placeholder="password" id="password">
				<label class="login-field-icon fui-lock" for="login-pass"></label>
				</div>

				<a class="btn btn-primary btn-large btn-block" href="test.php">login</a>
				<a class="login-link" href="#">Lost your password?</a>
			</div>
		</div>
	</div>
</body>