Custom Price message meta key into cart item (IVA) - Woocommerce

custom-price-message-meta-key-into-cart-item-iva-woocommerce.php

<?php

add_filter( 'woocommerce_cart_item_subtotal', 'kd_custom_price_message', 10, 3 );  

function kd_custom_price_message( $price_html, $cart_item, $cart_item_key ) {
	if (!empty($cart_item['_cpo_calc_option'])) {
		foreach ($cart_item as $key => $value) {
			if(is_array($value)){
				if(array_key_exists('uni_cpo_iva10', $value)) {
					$afterPriceSymbol = ' <small class="tax_label">(IVA incl. 10%)</small>';
				}elseif(array_key_exists('uni_cpo_iva22', $value)) {
					$afterPriceSymbol = ' <small class="tax_label">(IVA incl. 22%)</small>';
				}
			}
		}
	}else{
		$afterPriceSymbol = ' <small class="tax_label">(IVA incl. 22%)</small>';
	}
	return $price_html . $afterPriceSymbol;
}