'邮箱验证吗', 'LAST_SEND_EMAIL_VERIFY_TIMESTAMP' => '最后一次发送邮箱验证码时间' ]; public static function get(string $key, $uniqueValue):string { if (!in_array($key, array_keys(self::KEYS))) { abort(500, 'key is not in cache key list'); } return $key . '_' . $uniqueValue; } }