[is_verified_owner]

/**
 * Example usage: [is_verified_owner][site_reviews_form][/is_verified_owner]
 *
 * @param array $atts
 * @param string $content
 * @return string
 */
add_shortcode('is_verified_owner', function ($atts, $content = '') {
    global $product;
    if (!function_exists('wc_customer_bought_product') || empty($product)) {
        return do_shortcode($content);
    }
    $isVerifiedOwner = wc_customer_bought_product('', get_current_user_id(), $product->get_id());
    return $isVerifiedOwner || 'no' === get_option('woocommerce_review_rating_verification_required')
        ? do_shortcode($content)
        : esc_html__('Only logged in customers who have purchased this product may leave a review.', 'site-reviews-woocommerce');
}, 10, 2);