<?php
global $product;

if (!is_a($product, 'WC_Product')) {
    $product = wc_get_product(get_the_ID());
}

$is_on_sale = false;

if ($product) {
    if (!$product->is_type('variable')) {
        $is_on_sale = $product->is_on_sale();
    } else {
        $variations = $product->get_available_variations();
        foreach ($variations as $variation) {
            $variation_product = wc_get_product($variation['variation_id']);
            if ($variation_product && $variation_product->is_on_sale()) {
                $is_on_sale = true;
                break;
            }
        }
    }
}

// Geef content weer als het product in de aanbieding is
if ($is_on_sale) {
    if ($product->is_type('variable')) {
        $min_regular_price = $product->get_variation_regular_price('min', true);
        $max_regular_price = $product->get_variation_regular_price('max', true);
        if ($min_regular_price === $max_regular_price) {
            echo '' . wc_price($min_regular_price) . '</p>';
        } else {
            echo '' . wc_price($min_regular_price) . ' - ' . wc_price($max_regular_price) . '</p>';
        }
    } else {
        $regular_price = $product->get_regular_price();
        echo '' . wc_price($regular_price) . '</p>';
    }
}
?>