get_wc_product_gallery_images.php

<?php
function get_wc_product_gallery_images()
{
		global $product;
	
    if(!empty($product) && is_a($product, 'WC_Product'))
    {
        $ids = $product->get_gallery_image_ids();

        if(!empty($ids))
        {
            return array_map(function($id){
                return array(
                    'id' => $id,
                    'sizes' => array(
                        'thumbnail-mini' => wp_get_attachment_image_url($id, 'thumbnail-mini'),
                        'thumbnail' => wp_get_attachment_image_url($id, 'thumbnail'),
                        'medium' => wp_get_attachment_image_url($id, 'medium'),
                        'medium_large' => wp_get_attachment_image_url($id, 'medium_large'),
                        'large' => wp_get_attachment_image_url($id, 'large'),
                        'full' => wp_get_attachment_image_url($id, 'full'),
                    )
                );
            }, $ids);
        }
        else
        {
            return null;
        }
    }
    else
    {
        return null;
    }
}