<?php

session_start();
ob_start();
$host="localhost";
$username="root";
$db_name="mydb";
$tbl_name="mytable";
$mysqlpass="";

$connect = mysql_connect($host, $username, $mysqlpass) or die("couldn't connect");

mysql_select_db($db_name,$connect);

$user=$_POST['user'];
$password=$_POST['password'];

$query="INSERT INTO mytable (user, password) VALUES ('".$user."', '".$password."');";

mysql_query($query,$connect);

ob_end_flush();

?>

mysql -u root