how to get name attributes and name product together, after call "woocommerce_thankyou"?

$order_items = $order->get_items();

foreach ($order_items as $item_key => $item) {
 $product = $item->get_product(); // Get the WC_Product Object

 if( $product->is_type( 'variation' ) ){
    $attributes = $product->get_attributes();
    $variation_names = array();

    if( $attributes ){
        foreach ( $attributes as $key => $value) {
            $variation_key =  end(explode('-', $key));
            $variation_names[] = ucfirst($variation_key) .' : '. $value;
        }
    }
    echo implode( '<br>', $variation_names );
 }
}

The output of this code is as follows: after echo: %da%86%d8%b1%d8%a8%db%8c

and Incompatible with Persian language

I need something like this:

"product Name , color:red, size:85"

source https://stackoverflow.com/questions/70173746/how-to-get-name-attributes-and-name-product-together-after-call-woocommerce-th