I use the YITH WooCommerce comparison plugin and I will put the file containing the code relevant to my question:

https://file.io/StHr7KBJBdxF

$current_cat variable has been set equal to: public$current_cat=array() $this->current_cat has been used in some parts of the code, how to call $this-> outside the file and in the function file ;current_cat?

class YITH_Woocompare_Frontend_Premium extends YITH_Woocompare_Frontend {

    …

    /**
     * The list of current cat inside the comparison table
     *
     * @since 1.0.0
     * @var array
     */
    public $current_cat = array();

For example: $this->products_list; is used, if I want to call it outside the file and in the function file, it is like this: $products_list=isset($_COOKIE[get_COOKIE_name()])? json_decode(wp_unslash($_COOKIE[get_COOKIE_name()]): array();

I hope you understand what I mean. If this is a beginner question, please don't diss because not everyone is as professional as you. Furthermore, I spent a lot of time solving this problem. I'm not trying to ask a quick question here to find a quick answer.