woocommerce_downloadable_product_download_log_insert_format filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_downloadable_product_download_log_insert_format', 'filter_function_name_323', 10, 2 );
function filter_function_name_323( $format, $data ){
	// filter...

	return $format;
}

$format

-

$data

-

Where the hook is called

apply_filters( 'woocommerce_downloadable_product_download_log_insert_format', $format, $data )

Where in WP core the hook is used WooCommerce