Edit file File name : file-based-page-cache.php Content :<?php if (!defined('ABSPATH')) die('No direct access allowed'); /** * File based page cache drop in */ require_once(dirname(__FILE__) . '/file-based-page-cache-functions.php'); if (!defined('WPO_CACHE_DIR')) define('WPO_CACHE_DIR', untrailingslashit(WP_CONTENT_DIR) . '/wpo-cache'); if (wpo_is_activity_stream_requested()) return; if (wpo_is_robots_txt_requested()) return; // Fix for compatibility issue with Jetpack's infinity scroll feature if (isset($_GET['infinity']) && 'scrolling' === $_GET['infinity']) return; /** * Load extensions. */ wpo_cache_load_extensions(); /** * Action triggered when the cache extensions are all loaded. Allows to execute code depending on an other extension, without knowing the order in which the files are loaded. */ if (function_exists('do_action')) { do_action('wpo_cache_extensions_loaded'); } $no_cache_because = array(); // check if we want to cache current page. if (function_exists('add_filter') && function_exists('apply_filters')) { add_filter('wpo_restricted_cache_page_type', 'wpo_restricted_cache_page_type'); add_filter('wpo_url_in_conditional_tags_exceptions', 'wpo_url_in_conditional_tags_exceptions'); $restricted_cache_page_type = apply_filters('wpo_restricted_cache_page_type', false); $conditional_tag_exceptions = wpo_url_in_conditional_tags_exceptions(); } else { // On old WP versions, you can't filter the result $restricted_cache_page_type = wpo_restricted_cache_page_type(false); $conditional_tag_exceptions = wpo_url_in_conditional_tags_exceptions(); } if ($restricted_cache_page_type) { $no_cache_because[] = $restricted_cache_page_type; } if ($conditional_tag_exceptions) { $no_cache_because[] = $conditional_tag_exceptions; } // Don't cache non-GET requests. if (!isset($_SERVER['REQUEST_METHOD']) || 'GET' !== $_SERVER['REQUEST_METHOD']) { $no_cache_because[] = 'The request method was not GET ('.(isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : '-').')'; } $file_extension = $_SERVER['REQUEST_URI']; $file_extension = preg_replace('#^(.*?)\?.*$#', '$1', $file_extension); $file_extension = trim(preg_replace('#^.*\.(.*)$#', '$1', $file_extension)); // Don't cache disallowed extensions. Prevents wp-cron.php, xmlrpc.php, etc. if (!preg_match('#index\.php$#i', $_SERVER['REQUEST_URI']) && preg_match('#sitemap([a-zA-Z0-9_-]+)?\.xml$#i', $_SERVER['REQUEST_URI']) && in_array($file_extension, array('php', 'xml', 'xsl'))) { $no_cache_because[] = 'The request extension is not suitable for caching'; } // Don't cache if logged in. if (!empty($_COOKIE)) { $wp_cookies = array('wordpressuser_', 'wordpresspass_', 'wordpress_sec_', 'wordpress_logged_in_'); if (!wpo_cache_loggedin_users()) { foreach ($_COOKIE as $key => $value) { foreach ($wp_cookies as $cookie) { if (false !== strpos($key, $cookie)) { $no_cache_because[] = 'WordPress login cookies were detected'; break(2); } } } } if (!empty($_COOKIE['wpo_commented_post'])) { $no_cache_because[] = 'The user has commented on a post (comment cookie set)'; } // get cookie exceptions from options. $cache_exception_cookies = !empty($GLOBALS['wpo_cache_config']['cache_exception_cookies']) ? $GLOBALS['wpo_cache_config']['cache_exception_cookies'] : array(); // filter cookie exceptions, since WP 4.6 $cache_exception_cookies = function_exists('apply_filters') ? apply_filters('wpo_cache_exception_cookies', $cache_exception_cookies) : $cache_exception_cookies; // check if any cookie exists from exception list. if (!empty($cache_exception_cookies)) { foreach ($_COOKIE as $key => $value) { foreach ($cache_exception_cookies as $cookie) { if ('' != trim($cookie) && false !== strpos($key, $cookie)) { $no_cache_because[] = 'An excepted cookie was set ('.$key.')'; break 2; } } } } } // check in not disabled current user agent if (!empty($_SERVER['HTTP_USER_AGENT']) && false === wpo_is_accepted_user_agent($_SERVER['HTTP_USER_AGENT'])) { $no_cache_because[] = "In the settings, caching is disabled for matches for this request's user agent"; } // Deal with optional cache exceptions. if (wpo_url_in_exceptions(wpo_current_url())) { $no_cache_because[] = 'In the settings, caching is disabled for matches for the current URL'; } if (!empty($_GET)) { // get variables used for building filename. $get_variable_names = wpo_cache_query_variables(); $get_variables = wpo_cache_maybe_ignore_query_variables(array_keys($_GET)); // if GET variables include one or more undefined variable names then we don't cache. $get_variables_diff = array_diff($get_variables, $get_variable_names); if (!empty($get_variables_diff)) { $no_cache_because[] = "In the settings, caching is disabled for matches for one of the current request's GET parameters"; } } if (!empty($no_cache_because)) { $no_cache_because_message = implode(', ', $no_cache_because); // Add http header if (!defined('DOING_CRON') || !DOING_CRON) { wpo_cache_add_nocache_http_header_with_send_headers_action($no_cache_because_message); } if ((!defined('DOING_CRON') || !DOING_CRON)) { $not_cached_details = ""; // Output the reason only when the user has turned on debugging if (((defined('WP_DEBUG') && WP_DEBUG) || isset($_GET['wpo_cache_debug']))) { $not_cached_details = "because: ".htmlspecialchars($no_cache_because_message); } wpo_cache_add_footer_output(sprintf("Page not served from cache %s", $not_cached_details)); } return; } wpo_serve_cache(); ob_start('wpo_cache'); Save