public function save(){

        foreach ($this->cols as $table => $prkey){

            foreach($prkey as $prkey_){

                if(strlen($prkey_)<3){continue;}

            $this->writedb($table, $prkey_);
            }
        //more table records
        $this->rows[$table]['index'] = $this->indexData[$table];

            try{
            $this->writedb($table, 'index');
            }
            catch(Exception $aa){
              return false;
            }

        }
    return true;
    }