Disable strikeout for products which is in out of stock

Disable strikeout for products which is in out of stock

add_filter('advanced_woo_discount_rules_modify_price_html', function ($modify, $price_html, $product, $quantity){
    if(method_exists($product, 'is_in_stock')){
        if ( !$product->is_in_stock() ){
            $modify = false;
        }
    }

    return $modify;
}, 10, 4);