WooCommerce Product Metadata Output Issue

I have been digging for solution and I forward one step ahead but haven’t got solution yet.

Regarding the problem I found why the “\r\n” are coming?

I used woocommerce_before_calculate_totals hook to update product price dynamically. As I have been using addons so if user add some addon the price should be included into product price that’s why I wrote the below code.

add_action( 'woocommerce_before_calculate_totals', 'add_custom_field_price', 10, 1);

function add_custom_field_price( $cart_obj )
{
    //  This is necessary for WC 3.0+
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    foreach ( $cart_obj->get_cart() as $key => $value ) {
        $product = wc_get_product( $value['product_id'] );
        $variable_product = wc_get_product( $value['variation_id'] );
        if ( array_key_exists( 'addons', $value ) ) {
            $addons = $value['addons'];
            foreach ( $addons as $group_name => $addon ) {

                $price = 0;
                foreach ( $addon as $addon_name ) {
                    $actual_addon_name = str_ireplace( array( 'no ', 'less ', 'more ' ), '', $addon_name );
                    $addon_price = floatval( get_price_by_addon_name( $value['product_id'], $group_name, $actual_addon_name ) );
                    $addon_name_words = explode( " ", $addon_name );
                    if ( $addon_name_words[0] !== "No" ) {
                        $price += $addon_price;
                    }
                }

                if ( $variable_product ) {
                    $product_price = $variable_product->price + $price;
                } else {
                    $product_price = $product->price + $price;
                }
                $value['data']->set_price( $product_price );
            }
        }
    }
}

Let me explain the $addons data, it have group name as key and all selected addon as value(array), so basically its a multidimensional array. The addon name may have options like “No”, “Less” or “More” which added before its name.

The problem arise when third foreach loop run, the $addon array loop. Now I don’t understand why “\r\n” added when this loop run.