How to implement the running of static programs in PHP?

To achieve static program execution, you can utilize PHP caching technology. Here is a simple method:

1. Enable caching: Use the ob_start() function at the beginning of the program to start output buffering.
2. Check if the cache file exists by using the file_exists() function to see if the static file has already been generated.
3. If the cache file exists, output its contents directly: use the readfile() function to read the cache file and output its contents, then use the exit() function to terminate the program.
4. If the cache file does not exist, execute the program logic: the regular code logic of the program is executed.
5. End caching and generate cache file: Retrieve the cache content using the ob_get_contents() function at the end of the program, then write the cache content into the cache file using the file_put_contents() function.
6. Output cached content: use the ob_end_flush() function to output the cached content to the browser, and then use the exit() function to terminate program execution.

After implementing the above steps, the program will generate static files upon the first run and subsequently output the content of the static files directly, enhancing the program’s efficiency during future runs.