function add($data,$portfolioId,$file=[]){
        $title = $data['title'];
        $url = $data['url'];
        $description = $data['description'];
        $designer = $data['designer'];
        $skill = $data['skill'];
        $date = $data['date'];
        $customer = $data['customer'];
        $link = $data['link'];

        if ($portfolioId == ''){
            $sql = "insert into tbl_portfolio (title,url,description,designer,skill,date,customer,link,img) VALUES (?,?,?,?,?,?,?,?,?)";
            $values = [$title,$url,$description,$designer,$skill, $date, $customer, $link,$newName];
            $this->doQuery($sql,$values);
            $portfolioId = parent::$conn->lastInsertId();
            mkdir('../public/upload/portfolio/'.$portfolioId);
        }
        else{
            $sql = "update tbl_portfolio set title=?,url=?,description=?,designer=?,skill=?,date=?,customer=?,link=? where id=?";
            $values = [$title,$url,$description,$designer,$skill, $date, $customer, $link,$portfolioId];
            $this->doQuery($sql,$values);
        }
        //Upload Start
        if (isset($_FILES['image'])) {
            $file = $_FILES['image'];
            $fileName = $file['name'];
            $fileTmp = $file['tmp_name'];
            $fileSize = $file['size'];

            $target = '../public/upload/portfolio/'.$portfolioId.'/';
            $allowedExts = array("gif", "jpeg", "jpg", "png", "PNG");

            $temp = explode(".", $fileName);
            $extension = end($temp);

            $fileType = @exif_imagetype($fileTmp);
            $allowed = array(IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG);

            /*if (!in_array($extension, $allowedExts)) {
                echo "فرمت عکس غیر مجاز می باشد ";
            }
            else*/if ($fileSize > (2*1024*1024)) {
                echo " سایز عکس زیاد است";
            }
            elseif ((
                (!$file['type'] == "image/gif")
                || (!$file['type'] == "image/jpeg")
                || (!$file['type'] == "image/jpg")
                || (!$file['type'] == "image/png"))) {
                echo " فایل آپلود شده عکس نیست ";
            }
            elseif (!in_array($fileType, $allowed)) {
                echo "فایل ناشناخنه است";
            }
            else {
                $newName = md5(time()).$fileName;
                move_uploaded_file($fileTmp, $target . $newName);
            }
        }
        //Upload End
        header('location:'.adminURL.'portfolio');
    }