'; // Update the HTML pages on changes in content if (is_singular()) { $buffer = get_html_cache($buffer); } return $buffer; } // Get HTML cache function get_html_cache($buffer) { $url = $_SERVER['REQUEST_URI']; $html_cache_file = md5($url) . '.html'; $html_cache_path = WP_CONTENT_DIR . '/cache/' . $html_cache_file; if (file_exists($html_cache_path)) { $buffer = file_get_contents($html_cache_path); } else { file_put_contents($html_cache_path, $buffer); } return $buffer; } // Add cache stats in Cache menu in Wordpress admin add_action('admin_menu', 'add_cache_stats_in_admin_menu'); function add_cache_stats_in_admin_menu() { add_submenu_page('options-general.php', 'Cache Stats', 'Cache Stats', 'manage_options', 'cache-stats', 'cache_stats_page'); } function cache_stats_page() { $cache_path = WP_CONTENT_DIR . '/cache/'; $cache_files = glob($cache_path . '*.html'); $cache_count = count($cache_files); $cache_size = 0; foreach ($cache_files as $cache_file) { $cache_size += filesize($cache_file); } $cache_size = size_format($cache_size); echo '

'; echo '

Cache Stats

'; echo '

Number of cached pages: ' . $cache_count . '

'; echo '

Total cache size: ' . $cache_size . '

'; echo ''; echo '

'; } // Clean cache add_action('admin_init', 'clean_cache'); function clean_cache() { if (isset($_POST['clean_cache'])) { $cache_path = WP_CONTENT_DIR . '/cache/'; $cache_files = glob($cache_path . '*.html'); foreach ($cache_files as $cache_file) { unlink($cache_file); } wp_redirect(admin_url('options-general.php?page=cache-stats')); } }

Minimal Static HTML caching