$citys) { // $str .= self::$regionTree[$provinceId]['name']; // if (count($citys) !== count(self::$regionTree[$provinceId]['city'])) { // $cityStr = ''; // foreach ($citys as $cityId) // $cityStr .= self::$regionTree[$provinceId]['city'][$cityId]['name']; // $str .= ' (' . mb_substr($cityStr, 0, -1, 'utf-8') . ')'; // } // $str .= '、'; // } // return mb_substr($str, 0, -1, 'utf-8'); // } }