woocommerce_rate_label │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_rate_label', 'wp_kama_woocommerce_rate_label_filter', 10, 2 );

/**
 * Function for `woocommerce_rate_label` filter-hook.
 * 
 * @param  $rate_name 
 * @param  $key       
 *
 * @return 
 */
function wp_kama_woocommerce_rate_label_filter( $rate_name, $key ){

	// filter...
	return $rate_name;
}

$rate_name

-

$key

-

Where the hook is called

return apply_filters( 'woocommerce_rate_label', $rate_name, $key );

Where the hook is used in WooCommerce