Classi PHP

[Salvy95]

perfetto... anzi no.
Adesso ho un altro problema...
ho modificato il codice in questo modo

<?
include("../class.php");
$connect = new db();
class session{
var $key;
var $ip;
var $sql;
public function is_logged(){
$this->sql = $_GLOBAL['connect'];
$this->key = $_COOKIE['session'];
$this->ip = getenv("REMOTE_ADDR");
if(mysql_num_rows($this->sql->speed_sendRequest("SELECT * FROM UTENTI WHERE uSESSION = '".$this->ip."' AND uREMOTE_ADD = '".$this->ip."';")) > 0){
return true;
}
else{
return false;
}
 }
  }

$sid = new session();
if($sid->is_logged()){
print("yes");
}
else{
print("false");
}
?>

Adesso mi dice
Fatal error: Call to a member function speed_sendRequest() on a non-object on line 12