Why it is forbidden to write HTML code in PHP code

With the development of websites, more and more developers are using PHP language to develop on the back-end of the website, instead of using traditional HTML pages. Although there are cases where developers need to embed HTML code within PHP code, this is not a good practice as it can lead to maintainability and security issues for the website. Therefore, it is a good suggestion to prohibit writing HTML code in PHP code.

Why is it forbidden to write HTML code in PHP code? For this problem, we need to consider the following aspects:

First of all, HTML code is used to present and lay out data and information. PHP code is used to process and generate information. If you mix HTML code and PHP code, the code will be messy and the readability and maintainability will become very poor. This makes it difficult for future developers to understand the code, maintain it, and update it.

Secondly, mixing HTML code and PHP code can also cause security issues. For example, if you use HTML markup to code a form and pass the form data to a PHP script, an attacker may be able to plant malicious code to steal user data. Instead, writing your form in PHP code is safer because you can control the type of data entered and how the form is requested.

Finally, mixing HTML code and PHP code will also lead to reduced flexibility and scalability of program design. If you separate the HTML code and PHP code, it will be easier to refactor the program and change the appearance of the website. If the two are mixed together, it will become very difficult to change the appearance of the website.

In order to solve these problems, it is a best practice to prohibit writing HTML code in PHP code. This will help enhance the maintainability and security of the site and make future development easier. If you really need to embed HTML code into a PHP page, you can also do it through other methods, such as using a template engine or include file technology.

In short, prohibiting the embedding of HTML code in PHP code can greatly improve the quality and maintainability of website design, while also better protecting user privacy and security. As a developer, we should adopt the best practices possible to provide users with a better website experience.

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