Code-Snippets-Functions/Execute a function on a child site/WooCommerce/discounts-for-active-subscribers.txt

add_filter( 'woocommerce_product_get_price', 'apply_half_price_for_active_subscribers', 10, 2 );
add_filter( 'woocommerce_product_get_regular_price', 'apply_half_price_for_active_subscribers', 10, 2 );
function apply_half_price_for_active_subscribers( $price, $product ) {
    if ( has_active_subscription() && WC()->cart->cart_contents_count > 0 ) {
        // Get the total quantity of products in the cart for the current user
        $user_id = get_current_user_id();
        $product_count = 0;
        foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
            if ( $cart_item['data']->get_id() != $product->get_id() && $cart_item['data']->is_purchasable() ) {
                $product_user_id = $cart_item['data']->get_meta( '_customer_user', true );
                if ( empty( $product_user_id ) || $product_user_id == $user_id ) {
                    $product_count += $cart_item['quantity'];
                }
            }
        }
        // Apply half price discount for additional products purchased
        if ( $product_count > 0 ) {
            $price = $price / 2;
        }
    }
    return $price;
}