WooCommerce JSON-LD Structured Data (Rich Snippets)

global $product;
$sd_product_name		= $product->get_title();
$sd_product_image		= get_the_post_thumbnail_url();
$sd_product_description		= substr(wp_strip_all_tags($product->get_post_data()->post_excerpt),0,107) . '...';
$sd_product_sku			= $product->get_sku();
$sd_product_rating_value	= $product->get_average_rating();
$sd_product_rating_count	= $product->get_rating_count();
$sd_product_currency		= get_woocommerce_currency();
$sd_product_price		= $product->get_price();
$sd_product_stock		= $product->get_stock_status();
$sd_organization		= get_bloginfo('name');

echo '
	<script type="application/ld+json">
	{
	  "@context": "http://schema.org/",
	  "@type": "Product",
	  "name": "' . $sd_product_name . '",
	  "image": [
		"' . $sd_product_image . '"
	   ],
	  "description": "' . $sd_product_description . '",
	  "sku": "' . $sd_product_sku . '",
	  "aggregateRating": {
		"@type": "AggregateRating",
		"ratingValue": "' . $sd_product_rating_value . '",
		"reviewCount": "' . $sd_product_rating_count . '"
	  },
	  "offers": {
		"@type": "Offer",
		"priceCurrency": "' . $sd_product_currency . '",
		"price": "' . $sd_product_price . '",
		"availability": "http://schema.org/' . $sd_product_stock . '",
		"seller": {
		  "@type": "Organization",
		  "name": "' . $sd_organization . '"
		}
	  }
	}
	</script>
';