Untitled

<html>
<body>

	<?php
		mysql_connect('localhost', 'root', '');
		mysql_select_db('membership');


		if (isset($_POST['submit']))
		{
			$username = $_POST['user'];
			$password = md5($_POST['pass']);

			$query = mysql_query("SELECT * FROM users WHERE username = '" . $username . "'");
			if (mysql_num_rows($query) == 0)
			{
				echo 'Success';

				$insert = mysql_query("INSERT INTO users (username, password) VALUES('$username', '$password')");
			}
			else
			{
				echo 'Username already taken';
				echo '<br><a href="register.php">Go Back</a>';
			}
		}
		else
		{

	?>


	<form method="POST">
	<label for="user">Username:</label>
	<input type="text" name="user" /><br />
	<label for="pass">Password:</label>
	<input type="text" name="pass" size="5" /><br />
	<input type="submit" name="submit" value="Submit" />
	</form>


	<?php
		}
	?>

</body>
</html>