How can a PHP script be modified to save content for a week and serve it as HTML without PHP functions?

To save content for a week and serve it as HTML without PHP functions, you can use a combination of file caching and conditional checks to determine if the cached file is still valid. You can save the content to a file and check the file's last modified timestamp to see if it's within the past week. If it is, serve the cached content as HTML; otherwise, regenerate the content and save it to the file.

<?php
$cache_file = 'cached_content.html';
$cache_time = 604800; // 1 week in seconds

if (file_exists($cache_file) && (time() - filemtime($cache_file) < $cache_time)) {
    // Serve cached content
    include $cache_file;
} else {
    // Generate new content
    ob_start();
    // Your content generation code here
    $content = ob_get_clean();
    
    // Save content to cache file
    file_put_contents($cache_file, $content);
    
    // Serve the generated content
    echo $content;
}
?>