Woocommerce Place Holder
woocommerce_placeholder_img_src == wc_placeholder_img_src
Related list
$product->wc_get_related_products( $posts_per_page ) === wc_get_related_products($product-;>;get_id(), $posts_per_page )
Upsell list
$product-;>get_upsells() == $product-;>get_upsell_ids()
Content Product.php list
$product->id => $product->get_id()
get_gallery_attachment_ids => get_gallery_image_ids
file include function
woocommerce_get_template_part () = wc_get_template_part()
Content product price html
echo $product->get_price_html(); === echo wc_price($product->get_price())