public static function find_rates($args = array())
{
$args = wp_parse_args($args, array('country' => '', 'state' => '', 'city' => '', 'postcode' => '', 'tax_class' => ''));
extract($args, EXTR_SKIP);
if (!$country) {
return array();
}
$postcode = wc_normalize_postcode(wc_clean($postcode));
$cache_key = WC_Cache_Helper::get_cache_prefix('taxes') . 'wc_tax_rates_' . md5(sprintf('%s+%s+%s+%s+%s', $country, $state, $city, $postcode, $tax_class));
$matched_tax_rates = wp_cache_get($cache_key, 'taxes');
if (false === $matched_tax_rates) {
$matched_tax_rates = self::get_matched_tax_rates($country, $state, $postcode, $city, $tax_class);
wp_cache_set($cache_key, $matched_tax_rates, 'taxes');
}
return apply_filters('woocommerce_find_rates', $matched_tax_rates, $args);
}