function query($query)
 {
     if (!parent::query($query)) {
         return false;
     }
     if (!($this->result = mysqli_query($this->connectionid, $query))) {
         echo $this->dump_error();
     }
     return $this->result;
 }
 function query($query)
 {
     if (!parent::query($query)) {
         return false;
     }
     try {
         $this->stmt = $this->pdo->query($query);
     } catch (PDOException $ex) {
         $this->dump_error($ex);
         return false;
     }
     return true;
 }