public function verifica_token($token)
 {
     $v = -1;
     $token = parent::purifica($token);
     //purifico la variabile
     if ($r = $this->db->Execute("SELECT id\n\t\t\t\t\t\t\t\t\t  FROM ordine\n\t\t\t\t\t\t\t\t\t  WHERE token=? AND tipo=2", array($token))) {
         if (!$r->EOF) {
             //ordine esistente
             $v = $r->fields['id'];
         }
     }
     return $v;
 }