使用WordPress $ wpdb对象从自定义表获取结果时出错

Question

I am trying to use $wpdb object to get results from a custom table and I get an error when I echo the result:

Notice: Undefined property: stdClass::$category in...

Here is the PHP code:

global $wpdb;
$prodCat = $wpdb->get_results( 
"SELECT * FROM product_category" , OBJECT_K);
    foreach ( $prodCat as $row ){
                echo $row->category-name;
    }

Any help is appreciated.

Answer 1

Never mind. the problem was because of my column name 'category-name, I changed it to categoryName in database and worked fine. It had something to do with the hyphen ' - '.