Automattic / jetpack

				if ( isset( $item['src'] ) ) {

					// Make all image links absolute

					$check_url = parse_url( $item['src'] );

					if( empty( $check_url['scheme'] ) && empty( $check_url['host'] ) ){

						$item['src'] = network_site_url( $item['src'] );

					}

					$one_image['image:loc'] = esc_url( $item['src'] );

					$one_image['image:title'] = sanitize_title_with_dashes( $name = pathinfo( $item['src'], PATHINFO_FILENAME ) );

				}

			if ( isset( $post_thumbnail['src'] ) ) {

				// Make all news image links absolute

				$check_url = parse_url( $post_thumbnail['src'] );

				if( empty( $check_url['scheme'] ) && empty( $check_url['host'] ) ){

					$post_thumbnail['src'] = network_site_url( $post_thumbnail['src'] );

				}

				$url['image:image'] = array( 'image:loc' => esc_url( $post_thumbnail['src'] ) );

			}