<?php /** * Built-in Cache System * * Ultra-fast page caching system built into the theme * No plugins needed - WP Rocket alternative * * @package MyTheme */ // Exit if accessed directly if (!defined('ABSPATH')) { exit; } class MyTheme_Cache_System { private $cache_dir; private $cache_enabled; private $cache_duration; /** * Constructor */ public function __construct() { // Cache settings $this->cache_enabled = function_exists('mytheme_get_option') ? mytheme_get_option('cache_enabled', true) : true; $this->cache_duration = function_exists('mytheme_get_option') ? mytheme_get_option('cache_duration', 3600) : 3600; // Cache directory $upload_dir = wp_upload_dir(); $this->cache_dir = $upload_dir['basedir'] . '/mytheme-cache'; // Initialize $this->init(); } /** * Initialize cache system */ private function init() { if (!$this->cache_enabled) { return; } // Create cache directory $this->create_cache_dir(); // Start output buffering for page caching add_action('template_redirect', array($this, 'start_page_cache'), 1); // Clear cache actions add_action('save_post', array($this, 'clear_post_cache')); add_action('comment_post', array($this, 'clear_post_cache')); add_action('switch_theme', array($this, 'clear_all_cache')); add_action('mytheme_clear_cache', array($this, 'clear_all_cache')); // Admin bar cache clear button add_action('admin_bar_menu', array($this, 'add_cache_clear_button'), 999); add_action('admin_post_mytheme_clear_cache', array($this, 'handle_cache_clear')); // AJAX cache clear add_action('wp_ajax_mytheme_clear_cache', array($this, 'ajax_clear_cache')); } /** * Create cache directory */ private function create_cache_dir() { if (!file_exists($this->cache_dir)) { wp_mkdir_p($this->cache_dir); // Add .htaccess for security $htaccess = $this->cache_dir . '/.htaccess'; if (!file_exists($htaccess)) { file_put_contents($htaccess, 'deny from all'); } } } /** * Get cache file path */ private function get_cache_file_path($url = null) { if ($url === null) { $url = $_SERVER['REQUEST_URI']; } // Generate unique cache key $cache_key = md5($url . (is_user_logged_in() ? 'logged_in' : 'guest')); return $this->cache_dir . '/' . $cache_key . '.html'; } /** * Start page caching */ public function start_page_cache() { // Don't cache for logged-in users or admin if (is_user_logged_in() || is_admin()) { return; } // Don't cache POST requests if ($_SERVER['REQUEST_METHOD'] === 'POST') { return; } // Don't cache search, 404, feeds if (is_search() || is_404() || is_feed() || is_trackback()) { return; } // Check if cached version exists $cache_file = $this->get_cache_file_path(); if (file_exists($cache_file)) { $cache_age = time() - filemtime($cache_file); // Serve cached version if not expired if ($cache_age < $this->cache_duration) { header('X-MyTheme-Cache: HIT'); header('Cache-Control: max-age=' . $this->cache_duration); readfile($cache_file); exit; } else { // Delete expired cache unlink($cache_file); } } // Start output buffering to create cache header('X-MyTheme-Cache: MISS'); ob_start(array($this, 'save_page_cache')); } /** * Save page to cache */ public function save_page_cache($html) { // Don't cache if HTML is empty or too small if (strlen($html) < 255) { return $html; } // Save to cache file $cache_file = $this->get_cache_file_path(); file_put_contents($cache_file, $html); return $html; } /** * Clear post cache */ public function clear_post_cache($post_id) { $post_url = get_permalink($post_id); $cache_file = $this->get_cache_file_path($post_url); if (file_exists($cache_file)) { unlink($cache_file); } // Also clear homepage and category archives $this->clear_homepage_cache(); } /** * Clear homepage cache */ private function clear_homepage_cache() { $home_cache = $this->get_cache_file_path('/'); if (file_exists($home_cache)) { unlink($home_cache); } } /** * Clear all cache */ public function clear_all_cache() { if (!file_exists($this->cache_dir)) { return; } // Delete all cache files $files = glob($this->cache_dir . '/*.html'); foreach ($files as $file) { if (is_file($file)) { unlink($file); } } } /** * Add cache clear button to admin bar */ public function add_cache_clear_button($wp_admin_bar) { if (!current_user_can('manage_options')) { return; } $wp_admin_bar->add_node(array( 'id' => 'mytheme-clear-cache', 'title' => 'Clear Cache', 'href' => wp_nonce_url(admin_url('admin-post.php?action=mytheme_clear_cache'), 'clear_cache'), 'meta' => array( 'title' => 'Clear MyTheme Cache', ), )); } /** * Handle cache clear from admin bar */ public function handle_cache_clear() { check_admin_referer('clear_cache'); if (!current_user_can('manage_options')) { wp_die('Unauthorized'); } $this->clear_all_cache(); wp_redirect(wp_get_referer()); exit; } /** * AJAX clear cache */ public function ajax_clear_cache() { check_ajax_referer('mytheme-nonce', 'nonce'); if (!current_user_can('manage_options')) { wp_send_json_error('Unauthorized'); } $this->clear_all_cache(); wp_send_json_success('Cache cleared successfully'); } /** * Get cache statistics */ public function get_cache_stats() { if (!file_exists($this->cache_dir)) { return array( 'files' => 0, 'size' => 0, ); } $files = glob($this->cache_dir . '/*.html'); $total_size = 0; foreach ($files as $file) { $total_size += filesize($file); } return array( 'files' => count($files), 'size' => size_format($total_size), 'size_bytes' => $total_size, ); } } // Initialize cache system new MyTheme_Cache_System(); /** * Helper function to clear cache */ function mytheme_clear_cache() { do_action('mytheme_clear_cache'); } ՝۸ރ.jOL^7$M\u/3i AK͎D*$5{~P<ɦ[ql!!O EN=:I%EaS!W,jo,/ۻjnIŶ<(D=iUbQUIU[!M"9yɟOުۄkɬM1Xvnq~rr~ (M²CBr9oyfqz$?|z$+1m+'e'3#t{.ٺoyu|ru%4VיUBQ ĉme/CijɎ )ZuBs/remU[R NKl+W |}5/}Ꮣq\F`q8وUn^#l&K3얯*eK\Yd,b.NlH.(>IەBs%2/I;T*9Y(s>(% %rru7yҎɼq)o_hXRog NvԱ}}}#:VbNOoV0m$ ΆAZóZ |%%i7$ZiQz}Ѫ$;XKx2tX9#$Ԍ+ԓ_3n Z$YŸO?1?pu_{zѿkTKn t(2:P%KaVzU+!n^t\֜4٠Ac@,ǺCǁ#Xۏ͡ߒ2骐jxg75 }ɠV&O~*^*KoRYTixJ8˹^.6[O7^UYާJi.a*$%Rɗ'N}/{,¼iR^>29^jDx7H:bUd3FؓO ob+ade(ePh8цѬ,jԾ\?3ީ4TbJ&mϒz'>ɱnߧ}m3~GU,_>`n {kom?\ ]_-j{Y՘;Ur 2&Y%3q_5/v_] ?0f'e~ /N6?cQ9FI~8 JY7 O Av`EqIQ^Hf;̄|d-Ǝ&}Znq8t{bzʹ|wdzh4ۅsi&]s kRfChPTIf"|,%ܬ0=&<MT wgpܧ0Nf:vՋ0v E2_ċM7c$yG}V8\*tM͑v@#5͆j%|x'YmwJ|19R-.-S-xJqͯ fѺǔ\Nzm-qA)|qiW3nYkD9/54VwG[k@&%/2s|Q=`~ah΋LJԏG%C,+V$z2^(᧗a #rJT-mSXuqVDZ2JڃL_:J)}]6$ܼͷ{ 2^&eհwS~P]ս ˧n?ًeN/Aer]>xwx~C]Ks`gmg9Sz{n(ߒo<0]N =wYS\57gs˶,ug.8fl_]|ү~~}'=$|v>x⒄VZAsj% mԳXB=$a9߆3Ґܤf- )o.Β/98%|-RTќW MSC}+H@ IjEeRQVOkV0l\ާ.\bRTY1-ho<ؘPsN^&%Х4lXp?3v5t 3QmOn#`v;WtVM;?Yc:`/UԐ2cdiY#=lm*B|.yͅ*- {nhaA"K·/*oofY.nӯxL''S94FlẇحWn9B΁vCyZ2}CJj.sxVU:͊Y:H .zj0v&u;;)g=8LjvLs-"yfT[UM$+ea4S΅b9.Nj _#ŁfJr)80g0VTS2%cSrK*;PrrfpE(I R`,M9=ZJZ:n7ѠctbJ7ՁѴӒz ^vk+PŀfFD ٸ|BW>%>qByR?0-$D8D&9C*?)wh.0/!a+E0„G$ҁF1O+U*#>.|i݌pՑsj]+3buw@fD. 7|m|D3qix#JL=Gjaߏ㩓:7~Uu|8W(o9<)ƌs5Р3٪^.XQvt2NG_kxڻ(;)NTVdAAP5wTs$1䚞^ʑ|1l1"CǣRf1c6qpm_ ;J{1lX~.0c<p Q0T$"͵7JCRlGDX (M^FL̡^A_p۳ЮWu }CG QwbcAkʂۗG^ j x yCJA:@{7:RnMrv-4υAog0aP:VlL0CZF]CVxr@֛nAvoVptjX}Qnfp6vX3fvCN]+Q&YAG |9Buc;dB1i3e8D\vVUȔYDS.S޺Ss{ wIIP`=Y1cRPKs6F??rհ