Custom Sorting By Numeric Meta Value

I have written some code to add a custom sort order by meta value to the shop page. The data to sort by is a member product price, it displays the products with member prices by it does not sort by the value.

Here is the code

add_filter('woocommerce_get_catalog_ordering_args', 'es_add_catalog_order_args_member_price');

function es_add_catalog_order_args_member_price($args) {

	if(isset( $_GET['orderby'] )) {
		$orderby_value = woocommerce_clean( $_GET['orderby'] );
	}

	if($orderby_value == 'member_price') {
		$args['meta_key'] = 'member_price';
		$args['order'] = 'ASC';
		$args['order_by'] = 'meta_value_num';
	}

	return $args;
}

Cheers!

https://ww.wp.xz.cn/plugins/woocommerce/