Get url of product’s images (woocommerce)

Firstly, the GUID is not the URL. It is a “globally unique identifier”. WordPress uses the URL for this purpose, but accessing it is not a reliable way to get the URL for anything (this was a bad idea, but is kept this way for backwards compatibility).

It’s not possible to query the image URL from the database directly. The full URL is not stored there. But if you have the ID for a product and want to get the URL for its image you can do this:

$product   = wc_get_product( $product_id );
$image_id  = $product->get_image_id();
$image_url = wp_get_attachment_image_url( $image_id, 'full' );