$login_chk = mysql_query("SELECT * FROM users WHERE username = " . mysql_real_escape_string($username)) or die("Error, checking password");

		if (mysql_num_rows($login_chk) < 1) {
			echo "Invalid Username";
			die();
		}

		$row = mysql_fetch_assoc($login_chk);
		if (db_password == $row['password']) {
			echo "login worked!";
		} else {
			echo "Invalid Password";
		}