<?php
function authenticate_user($login, $password, $key)
{
	$val = set_codes();
	$query = "select * from users where login='$login' and password = encode('$password', '$key')";
	$result = mysql_query ($query);
	$row = mysql_fetch_row($result);

	if (mysql_num_rows($result) > 0)
	{
		$_SESSION['auth'] = $val;
		$_SESSION['id'] = $row[0];
	}
	else
	{
		$_SESSION['auth'] = "Incorrect Login";
	}
}
?>