为什么在查看源代码时看不到我PHP代码？

╰+攻爆jí腚メ 2022-12-06 15:39 151阅读 0赞

Web developers and others who are knowledgeable about web pages know you can use a browser to view the HTML source code of a website. However, if the website contains PHP code, that code is not visible, because all the PHP code is executed on the server before the website is sent to a browser. All the browser ever receives is the result of the PHP embedded in the HTML. For this same reason, you cannot go to a .[php file][] on the web, save it, and expect to see how it works. You are only saving the page produced by the PHP, and not the PHP itself.

Web开发人员和其他了解网页的人都知道您可以使用浏览器来查看网站HTML源代码。 但是，如果网站包含PHP代码，则该代码不可见，因为所有PHP代码都在网站发送到浏览器之前在服务器上执行。 浏览器收到的所有内容都是HTML内嵌PHP的结果。 出于同样的原因，您不能进入。 网页上的[php文件][php file] ，将其保存，并希望了解其工作原理。 您只保存由PHP生成的页面，而不保存PHP本身。

PHP is a server-side programming language, meaning it is executed at the web server before the website is sent to the end-user. This is why you can't see the PHP code when you view the source code.

PHP是一种服务器端编程语言，这意味着它在网站发送给最终用户之前在Web服务器上执行。 这就是为什么在查看源代码时看不到PHP代码的原因。

## 示例PHP脚本 **(** Sample PHP Script **)** ##

When this script appears in the coding of a web page or .php file that is downloaded by an individual to a computer, that viewer sees:

当此脚本出现在个人下载到计算机的网页或.php文件的编码中时，查看者将看到：

My PHP Page

Because the rest of the code is just instructions for the web server, it isn't viewable. [A view source][] or a save simply displays the results of the code—in this example, the text My PHP Page.

由于其余代码只是Web服务器的说明，因此无法查看。 [视图源][A view source]或保存仅显示代码的结果-在此示例中，文本为My PHP Page。

## 服务器端脚本与客户端脚本 **(** Server-Side Scripting vs. Client-Side Scripting **)** ##

PHP isn't the only code that involves server-side scripting, and server-side scripting isn't limited to websites. Other server-side programming languages include C\#, Python, Ruby, C++ and Java.

PHP不是唯一涉及服务器端脚本的代码，并且服务器端脚本不仅限于网站。 其他服务器端编程语言包括C＃，Python，Ruby，C ++和Java。

Client-side scripting operates with embedded scripts—JavaScript is the most common—that are sent from the web server to a user's computer. All the client-side script processing takes place in a web browser on the end-user's computer.

客户端脚本使用嵌入式脚本(最常见JavaScript)进行操作，这些脚本是从Web服务器发送到用户计算机的。 所有客户端脚本处理都在最终用户计算机上的Web浏览器中进行。

> 翻译自: [https://www.thoughtco.com/why-dont-see-code-viewing-source-2694210][https_www.thoughtco.com_why-dont-see-code-viewing-source-2694210]

[php file]: https://www.thoughtco.com/including-external-files-in-php-2693792
[A view source]: https://www.thoughtco.com/your-php-code-cant-be-viewed-2693939
[https_www.thoughtco.com_why-dont-see-code-viewing-source-2694210]: https://www.thoughtco.com/why-dont-see-code-viewing-source-2694210