php session_start db mysql_connect localhost root mysql_select_db rpgg

<?php 

session_start();
$db = mysql_connect("localhost", "root", "");
mysql_select_db("rpggg");

if(isset($_POST['button']))
{

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

}

$query = mysql_query("SELECT * from user WHERE name='$login'");
$mydb = mysql_fetch_array($query);

if ($login == $mydb['name']) 
{
	if ($password == $mydb['password']) 
	{
		$_SESSION['login'] = $login;
		echo "Ник: $login";		
	}
	else
		{
			echo "Пароль введен не верно!";	
		}
}
	
else
{
	echo "Логин веден не верно";
}

 ?>