下载代码兑换器的实施遇到问题

发布于 2024-12-05 04:21:22 字数 281 浏览 2 评论 0原文

我正在为一家小型独立唱片公司设计一个网站,他们抛出了一个重磅炸弹,询问我是否可以实现一个功能,让用户可以输入代码来接收数字下载。

有一个简单的解决方案可以做到这一点吗?我想我所需要的只是一个输入字段,用户可以在其中输入代码,经过验证然后允许下载,但这听起来太简单了。对于像 .php 这样的东西(完全初学者)来说这是否可能?

我愿意学习,否则我就会把它包含进去,所以任何建议都会很棒。谢谢。


编辑:

感谢一些很好的建议,我能够创建这个!

I'm designing a website for a small indie record label and they've dropped a bombshell asking if I could implement a function where a user can enter a code to receive a digital download.

Is there a simple solution to doing this? I was thinking all I would need is an input field where the user can enter a code, it gets verified and then allows a download but it sounds too simple. Is this even possible with something like .php (complete beginner)?

I'm willing to learn or I would've packed it in already so any advice would be great. Thanks.


Edit:

Thanks to some great advice I was able to create this!

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香橙ぽ 2024-12-12 04:21:22

如果你想在一个非常简单的层面上做到这一点,那么它并不比你描述的要复杂得多。您需要熟悉 PHP 和 MySQL 或其他一些数据库,但创建起来并不太困难。

您需要弄清楚一些事情,例如您希望如何限制代码、前 24 小时内 3 次下载以允许下载失败、限制为 IP,或者严格限制一次完整下载。由于您已经给出了 1000 个代码的列表,因此您可能希望将系统建立在预先生成代码并将其插入数据库的基础上,而不是使用可以动态验证代码然后检查是否已使用的算法代码。

您可能希望将下载内容存储在无法从 Web 访问的目录中,并且 php 脚本将验证代码,如果有效,则将下载内容提供给用户。

您可能可以查看 wordpress 插件的数据库结构以获取其他想法,但我认为至少您需要:

download_code   (the code itself, probably primary key or at least index)
download_file   (optional, the name/path of the file this code allows them to download)
redeemed        (0 if not redeemed, 1 if redeemed)
redemption_time (timestamp of the first, or last redemption based on your requirements)
download_count  (how many times downloaded if allowing more than 1)
ip_address      (ip address of the redeemer)
email_address   (email address if you want to collect it, or give user the option)
download_url    (the unique string for the download url.  this could be one way to implement   download verification beyond the code, but is not necessary)

然后您需要创建一个 html 页面,其中包含用于输入代码的文本框以及您希望的任何其他可选数据收集。该表单将提交给您的 PHP 脚本。

当 PHP 脚本收到表单帖子时,它将验证所有数据(即电子邮件地址,如果您正在收集它)。一旦所有数据都有效,您就可以从数据库中读取数据,查找与用户输入的内容相匹配的代码。

如果代码中未找到数据,请将其发送回表单以尝试重新输入。如果找到记录,您可以从数据库中检查redeemed值,看看该代码是否已被使用。如果有,您可以在此处使用自定义逻辑来确定它们是否仍在下载窗口内、IP 地址是否相同,或者您想要使用的任何标准来允许重新下载。

如果已兑换,则显示错误消息。如果仍然可以下载,您可以通过读取文件并将其发送到浏览器来提供下载 请参阅此处的示例#1

有时,您必须更新数据库,将redeemed 标志设置为 1,并更新其他值,例如时间戳和下载计数。您可以在提供下载之前运行此代码,也可以在提供下载之后运行它。在某些情况下,如果下载被中断,脚本的最后部分将不会运行,因此不会更新已兑换或下载计数。这可能是您想要的,也可能不是,因此您可以决定要在哪里进行更新。

最终您可以更新它以包含管理面板,但一开始所有配置都可以在 php 脚本或配置文件中完成。最终您可以更新它以使用闪存或其他一些技术来下载文件并显示进度条等。

希望这能让您了解是否要尝试实现它。否则,您可以随时搜索 Hotscripts 上的 php 来查看是否有已滚动的您想要的独立版本。

If you wanted to do it at a very simple level, it is not much more than you describe it to be. You would need to familiarize with PHP and MySQL or some other database, but it isn't too difficult to create.

You need to figure a few things out, such as how do you want to limit the codes, 3 downloads in the first 24 hours to allow for failed downloads, restrict it to IP, or strictly one full download. Since you have the list of the 1000 codes given, you will probably want to base your system around having codes pre-generated and inserted in the database, rather than having an algorithm that can validate the codes on the fly and then check for already used codes.

You would want to store the download(s) in a directory that is not accessible from the web, and the php script would validate the code, and if valid serve the download to the user.

You can probably look to the wordpress plugin's database structure for other ideas, but I think at the very least you would need:

download_code   (the code itself, probably primary key or at least index)
download_file   (optional, the name/path of the file this code allows them to download)
redeemed        (0 if not redeemed, 1 if redeemed)
redemption_time (timestamp of the first, or last redemption based on your requirements)
download_count  (how many times downloaded if allowing more than 1)
ip_address      (ip address of the redeemer)
email_address   (email address if you want to collect it, or give user the option)
download_url    (the unique string for the download url.  this could be one way to implement   download verification beyond the code, but is not necessary)

You would then need to create an html page with the text box for entering the code, and any other optional data you wish to collect. The form would submit to your PHP script.

When the PHP script receives a form post, it would validate all of the data (i.e. email address if you were collecting it). Once all data is valid, you read from the database looking for a code matching what the user entered.

If no data was found with the code, send them back to the form to try re-entering it. If a record is found, you can check the redeemed value from the database and see if the code has been used or not. If it has, this is where you can use custom logic to decide if they are still within their download window, the ip address is the same, or whatever criteria you want to use to allow re-downloads.

If it has been redeemed, show an error message. If it is still okay to download, you can serve a download by reading the file and sending it to the browser see example #1 here.

At some point you will have to update your database to set the redeemed flag to 1 and update the other values such as timestamp and download count. You can either run this code before you serve the download, or you can run it after the download is served. In some cases if the download was cut off, the last portion of your script won't run and therefore won't update redeemed or download_count. This may or may not be what you want, so you can decide where you want to do the updating.

Eventually you can update it to include an administration panel, but in the beginning all configuration could be done within the php script or config file. And eventually you could update it to use flash or some other technology to download the file and show progress bars etc.

Hopefully that will give you some idea on whether or not you want to try to implement it. Otherwise you could always search php on Hotscripts to see if there is an already rolled standalone version of what you want.

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