post_thumbnail.php

<?php
/**
 * Single Product Thumbnails
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/single-product/product-thumbnails.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see         https://docs.woocommerce.com/document/template-structure/
 * @package     WooCommerce\Templates
 * @version     3.5.1
 */

defined( 'ABSPATH' ) || exit;

// Note: `wc_get_gallery_image_html` was added in WC 3.3.2 and did not exist prior. This check protects against theme overrides being used on older versions of WC.
if ( ! function_exists( 'wc_get_gallery_image_html' ) ) {
	return;
}

global $product;


$image_attribtes = $product->get_attribute('images');
if(!empty($image_attribtes)) {
	$images = explode("|", $image_attribtes);

	if ( count($images) ) {
		array_shift($images);

		foreach($images as $image){
			printf('<div
				data-thumb="%s"
				data-thumb-alt=""
				class="woocommerce-product-gallery__image"
			>
				<a href="%s"
				><img
					width="600"
					height="480"
					src="%s"
					class=""
					alt=""
					decoding="async"
					loading="lazy"
					title="10"
					data-caption=""
					data-src="%s"
					data-large_image="%s"
					data-large_image_width="684"
					data-large_image_height="547"
					srcset="
					%s 600w,
					%s 300w,
					%s 768w, 
					%s 960w
					"
					sizes="(max-width: 600px) 100vw, 600px"
				/></a>
			</div>',
			
			$image,
			$image,
			$image,
			$image,
			$image,
			$image,
			$image,
			$image,
			$image,
			);
		}
	}
}else {
	$attachment_ids = $product->get_gallery_image_ids();

	if ( $attachment_ids && $product->get_image_id() ) {
		foreach ( $attachment_ids as $attachment_id ) {
			echo  apply_filters( 'woocommerce_single_product_image_thumbnail_html', wc_get_gallery_image_html( $attachment_id ), $attachment_id ); // phpcs:disable WordPress.XSS.EscapeOutput.OutputNotEscaped
		}
	}

}