public function whereIn($field, array $data, $condition = 'IN', $operator = 'AND')
    {
        if ( ! in_array($condition, ['IN', 'NOT IN']) || ! in_array($operator, ['AND', 'OR'])) {
            throw new \InvalidArgumentException("Error whereIn mode");
        }
        // create placeholder
        foreach ($data as $key => $value) {
            $plh = self::_getPlh();
            $data[$key] = $plh;
            $this->_bind_params[$plh] = $value;
        }
        // is the first time call where method ?
        if ($this->_where_str == '') {
            $this->_where_str = ' WHERE '.self::_wrapRow($field).' '.$condition.' ('.implode(',', $data).')';
        } else {
            $this->_where_str .= ' '.$operator.' '.self::_wrapRow($field).' '.$condition.' ('.implode(',', $data).')';
        }

        return $this;
    }