Modifying WooCommerce Shop Image size
<?php
/**
* Modify Product Image HTML
*/
function yanco_avia_woocommerce_thumbnail($asdf)
{
global $product, $avia_config;
$rating = $product->get_rating_html(); //get rating
$ribbon_html = '';
$id = get_the_ID();
$size = 'large';
$ribbon_html = yancoGetRibbonHtml('acf_woocommerce_product_ribbon_color', $product);
echo "<div class='thumbnail_container'>";
echo $ribbon_html;
echo avia_woocommerce_gallery_first_thumbnail( $id , $size);
echo get_the_post_thumbnail( $id , $size );
if(!empty($rating)) echo "<span class='rating_container'>".$rating."</span>";
if($product->product_type == 'simple') echo "<span class='cart-loading'></span>";
echo "</div>";
}