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PHP的数字验证码(Numeric Captcha for PHP)

 是否有可用于PHP的数字验证码？  
 （ 不依赖于JavaScript的开启 ）  
 
 编辑：  
 
  我知道那里有JS独立验证码。  
  我知道那里有PHP验证码。  
  我知道那里有数字验证码。  
 
 但我正在寻找一个PHP数字与Javascript无关的验证码。 
 我发现的唯一数字验证码是用于ASP.NET或基于jQuery / JS的。 
 我不希望这些问题中的任何一个作为答案。  
 而我在这里并没有考虑一个小型网站。 在答案中，我想知道你的建议是否会给服务器带来很大的压力。 

Is there a numeric captcha available for PHP? 
(which doesn't rely on JavaScript being turned on) 
 
EDIT: 
 
 I know there are JS-independent captchas out there. 
 I know there are PHP captchas out there. 
 I know there are numeric captchas out there.  
 
But I'm looking for a PHP numeric Javascript-independent captcha.
 The only numeric captcha's I've found are either for ASP.NET or jQuery/JS based ones.
 I don't want any of those as an answer to the question. 
And I'm not taking about a small website here. In the answer I'd like to know whether your suggestion puts a lot of strain on the server or not. 

原文：https://stackoverflow.com/questions/6041555

更新时间：2021-08-01 07:08

最满意答案

 将连接字符串放在某种配置文件（xml或ini或其他）中是有用的，以防您将数据库移动到另一台服务器或更改登录凭据等等...  
 如果你认为你永远不需要这个并且喜欢重建和重新部署你的应用程序，那么不，你不需要任何带有连接字符串的xml配置文件。  
 如果您担心安全性，可以将其保存在加密的xml文件中，然后解密它。  
 连接字符串和配置文件  
 加密app.config中的连接字符串 

It's useful to put your connection string in some kind of config file (xml or ini or whatever) in case you move your database to another server or you change your login credentials and so on...  
if you think you'll never need this and prefer to rebuild and redeploy your application, then no, you don't need any xml configuration file with the connection string in it. 
If you're worried about security you could keep it in the xml file encrypted and then decrypt it runtime.  
Connection Strings and Configuration Files  
Encrypt connection string in app.config

PHP的数字验证码(Numeric Captcha for PHP)

是否有可用于PHP的数字验证码？

Is there a numeric captcha available for PHP?

最满意答案

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