Mi Core - UbblyMaster

<?php
// UbblyMaster
session_start();
define("UbblyMaster", TRUE);
define("DR", $_SERVER['DOCUMENT_ROOT']);
define('CHARSET', 'UTF-8');
header('Content-type: text/html; charset='.CHARSET);
ini_set('display_errors', 0);

if(file_exists(DR .'/UbblyCore/Config.php')){
	require_once(DR .'/UbblyCore/Config.php');
}else{
	require_once('Config.php');
}

$H = date('H');
$i = date('i');
$s = date('s');
$m = date('m');
$d = date('d');
$Y = date('Y');
$j = date('j');
$n = date('n');
$today = $d;
$month = $m;
$year = $Y;
$getmoney_date = date('d/m/Y',mktime($m,$d,$Y));
$birthday_date = date('d/m', mktime($m,$d));
$date_normal = date('d/m/Y',mktime($m,$d,$Y));
$date_full = date('d/m/Y - H:i:s',mktime($H,$i,$s,$m,$d,$Y));

## Función para sacar la IP

function SacarIP() {
	if($_SERVER) {
		if($_SERVER["HTTP_X_FORWARDED_FOR"]) {
		$realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
		} elseif ($_SERVER["HTTP_CLIENT_IP"]) {
		$realip = $_SERVER["HTTP_CLIENT_IP"];
		} else {
		$realip = $_SERVER["REMOTE_ADDR"];
		}
	} else {
				if(getenv("HTTP_X_FORWARDED_FOR")) {
					$realip = getenv("HTTP_X_FORWARDED_FOR");
				} elseif(getenv("HTTP_CLIENT_IP")) {
					$realip = getenv("HTTP_CLIENT_IP");
				} else {
					$realip = getenv("REMOTE_ADDR");
				}
			}
	return $realip;
}
$ip = SacarIP();

function Huesped(){
	$data = "Ubbly";
	for ($i=1; $i<=6; $i++){
		$data = $data . rand(0,9);
	}
	$data = $data . "";
	for ($i=1; $i<=5; $i++){
		$data = $data . rand(0,9);
	}
	return $data;
}

function ProtectVars($str)
{
	$str = mysql_real_escape_string($str);
	return $str;
}

foreach($_POST as $param => $value)
{
	$_POST[$param] = ProtectVars($value);
}
foreach($_GET as $param => $value)
{
	$_GET[$param] = ProtectVars($value);
}

if(isset($_SESSION['Username']) && isset($_SESSION['Password']))
{
	$Sesion = mysql_query("SELECT * FROM users WHERE username = '". $_SESSION['Username'] ."' AND password = '". $_SESSION['Password'] ."'");

	if(mysql_num_rows($Sesion) > 0)
	{
		$UserInfo = mysql_fetch_assoc($Sesion);
		define("Conectado", Si);
	    define('User', ''.$UserInfo['username'].'');
	}
}
else
{
	define("Conectado", No);
}
?>