private function addch_fr_arr($dom,$root,$parametrs){
        foreach ($parametrs as $key=>$value){
            $child_name=$key;
            $child_value = '';
            $array_attr = '';
            $child_array = '';
            if (empty($value)) {
                $child=$this->add_child($dom,$root,$child_name,$child_value,$array_attr);
                //throw new Exception("Пустой xml",2);
            } else {
                foreach ($value as $key=>$value){
                    if ($key===0){
                        $child_value=$value;
                    } elseif ($key=="attr"){
                        $array_attr = $value;
                    } elseif ($key=="child"){
                        $child_array=$value;
                    } else {
                        $child_value=$value;
                    }
                }
                $child=$this->add_child($dom,$root,$child_name,$child_value,$array_attr);
                unset($child_value);
                if (is_array($child_array)) $this->addch_fr_arr($dom,$child,$child_array);
            }
        }
    }