WordPress at a glance
function is not described

woocommerce_get_product_thumbnail() WC 1.0

Get the product thumbnail, or the placeholder if not set.

Hooks from the function
Return

String. Nothing.

Usage

woocommerce_get_product_thumbnail( $size, $deprecated1, $deprecated2 );
$size(string)
(default: 'woocommerce_thumbnail').
$deprecated1(int)
Deprecated since WooCommerce 2.0 (default: 0).
$deprecated2(int)
Deprecated since WooCommerce 2.0 (default: 0).

Code of woocommerce_get_product_thumbnail() WC 5.3.0

<?php
function woocommerce_get_product_thumbnail( $size = 'woocommerce_thumbnail', $deprecated1 = 0, $deprecated2 = 0 ) {
	global $product;

	$image_size = apply_filters( 'single_product_archive_thumbnail_size', $size );

	return $product ? $product->get_image( $image_size ) : '';
}