function lfErrorCheck() {
　↓
function lfConvertParam($array, $arrRegistColumn) {
　↓
function lfRegistRecommendData ($array, $arrRegistColumn) {

function lfErrorCheck() {
　↓
function lfRegistBookmarkData ($array, $arrRegistColumn) {

//---- 登録用カラム配列
        $arrRegistColumn = array(
                       array(  "column" => "bookmark_id", "convert" => "n" ),
                       array(  "column" => "product_id", "convert" => "n" ),
                       array(  "column" => "memo", "convert" => "aKV" ),
                       array(  "column" => "create_date", "convert" => "aKV" )
                                );

        if (!isset($_POST['mode'])) $_POST['mode'] = "";
        switch ($_POST['mode']){
        	case 'confirm':
           $arrForm = $this->lfConvertParam($_POST, $arrRegistColumn);
            $this->arrErr = $this->lfErrorCheck($arrForm);
           
           //エラーチェック
            if($this->arrErr == ""){
                 //商品名の取得
                    $arrForm['name'] = $objQuery->get("dtb_products", "name", "product_id = ? ", array($arrForm['product_id']));
                    $this->arrForm = $arrForm;
                    $this->tpl_mainpage = 'products/bookmark_confirm.tpl';
            } else {
                //商品名の取得
                $arrForm['name'] = $objQuery->get("dtb_products", "name", "product_id = ? ", array($arrForm['product_id']));
                $this->arrForm = $arrForm;
            }
            break;