How to convert PHP code into static web page

With the development of the Internet, many websites have adopted dynamic web page technology, among which PHP language is widely used in the development of dynamic web pages. But in some special cases, we need to convert PHP code into static web pages in order to improve the speed and security of the website. This article will introduce how to convert PHP code into static web pages.

1. The difference between static web pages and dynamic web pages

Static web pages and dynamic web pages are two different web page technologies. The so-called static web page means that a fixed HTML page is generated in advance on the server, and the HTML file of the static web page can be directly accessed through the browser, without the need for further processing by the server. Dynamic web pages refer to dynamic HTML pages generated through server-side programs. Each visit requires the server to process the data, generate the HTML page and return it to the browser.

The advantages of static web pages are that they are fast, easy to deploy and maintain, and do not require program logic, which reduces the burden on the server and also improves the security of the website. However, since it can only display static content, it is not suitable for websites that require frequent content updates, such as news websites, forums, etc.

The advantage of dynamic web pages is that they can dynamically generate different HTML pages according to different user requests, and can dynamically update content to meet the needs of dynamic websites. However, due to the need to involve program logic, development, maintenance and deployment are more complicated. , and at the same time, it can easily lead to an increase in server load under high concurrency conditions.

2. Method of converting PHP code into static web pages

1. Combined with caching technology

Static web pages can be generated using caching technology to convert dynamic web pages into The content is cached as a static file, and the static file can be returned directly when the user accesses it. Caching technology can greatly improve the access speed of static web pages and reduce the burden on the server.

In PHP, you can use output caching technology to cache dynamic web page content into static files. Output caching can be implemented using the ob_start() and ob_end_flush() functions, and the cached files can be saved in the server for direct use during the next visit.

2. Use tool conversion

In addition to using caching technology, you can also use tools to convert PHP code into static web pages. For example, you can use the wget tool to download the dynamic pages of the website and save them as static files to facilitate offline browsing.

The command to use wget to download a static web page is as follows:

wget -m -k -p -E -np http://example.com

Use this command Dynamic pages of a website can be downloaded and converted into static web pages.

3. Use template engine

Use template engine to separate the HTML code and PHP code of dynamic web pages, process the HTML template file and PHP file separately, and finally The generated HTML file is stored on the server. The advantage of this is that the code can be better organized and easier to modify and maintain.

In PHP, you can use template engines such as Smarty and Twig to achieve this. The template engine can separate the content of dynamic web pages to facilitate modification and maintenance, and can also generate them into static files.

4. Static technology

Static technology is to save the content of dynamic web pages as static files and access the static files through URL address mapping. This method does not change the original logic and structure, it just converts it into a static file and stores it on the server, and maps it when access is needed.

In PHP, you can use nginx's rewrite module to implement functions similar to static technology. Use the rewrite module to map PHP files to HTML files to achieve access to static web pages.

3. Summary

Converting PHP code to static web pages can improve the speed and security of the website, but it also requires choosing different conversion methods according to different needs and situations. The methods introduced above are for reference only, and the specific implementation needs to be adjusted according to the actual situation and technical level.

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