'正常', self::ONLINE_BANKING_ABNORMAL => '网银异常', self::LIMITED => '限额', self::BUSINESS_DEREGISTERED => '工商注销', ]; public static function normalize(?string $status): string { $status = trim((string) $status); return array_key_exists($status, self::OPTIONS) ? $status : self::NORMAL; } public static function label(?string $status): string { return self::OPTIONS[self::normalize($status)]; } }