帝国CMS PHP缓存网页代码加速访问

定时更新缓存页功能

• 创建一个PHP文件，例如 timeCache.php，内容如下：

  <?php define('CACHE_ROOT', dirname(__FILE__) . DIRECTORY_SEPARATOR . 'cacheFile'); define('CACHE_TIME', 86400); define('CACHE_FIX', '.php'); date_default_timezone_set("Asia/Shanghai");  $CacheName = md5($_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']) . CACHE_FIX; $CacheDir = CACHE_ROOT . DIRECTORY_SEPARATOR . substr($CacheName, 0, 1); $CacheUrl = $CacheDir . DIRECTORY_SEPARATOR . $CacheName;  if (file_exists($CacheUrl) && time() - filemtime($CacheUrl) < CACHE_TIME && date('H:i', time()) > '06:30') {     echo gzuncompress(file_get_contents($CacheUrl));     exit; } elseif (!file_exists($CacheDir)) {     if (!file_exists(CACHE_ROOT)) {         mkdir(CACHE_ROOT, 0777);         chmod(CACHE_ROOT, 0777);     }     mkdir($CacheDir, 0777);     chmod($CacheDir, 0777); }  function AutoCache($contents) {     global $CacheUrl;     $fp = fopen($CacheUrl, 'wb');     $contents = "<!-- 缓存时间 " . (date("Y-m-d H:i:s", time())) . " -->\n" . $contents;     fwrite($fp, gzcompress($contents));     fclose($fp);     chmod($CacheUrl, 0777);     return $contents; }  ob_start('AutoCache'); clearstatcache();

定期更新页面

• 创建一个PHP文件，例如 cache.php，内容如下：

  <?php define('CACHE_ROOT', dirname(__FILE__) . DIRECTORY_SEPARATOR . 'cacheFile'); define('CACHE_TIME', 172800); define('CACHE_FIX', '.php'); date_default_timezone_set("Asia/Shanghai");  $CacheName = md5($_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']) . CACHE_FIX; $CacheDir = CACHE_ROOT . DIRECTORY_SEPARATOR . substr($CacheName, 0, 1); $CacheUrl = $CacheDir . DIRECTORY_SEPARATOR . $CacheName;  if (file_exists($CacheUrl) && time() - filemtime($CacheUrl) < CACHE_TIME) {     echo gzuncompress(file_get_contents($CacheUrl));     exit; } elseif (!file_exists($CacheDir)) {     if (!file_exists(CACHE_ROOT)) {         mkdir(CACHE_ROOT, 0777);         chmod(CACHE_ROOT, 0777);     }     mkdir($CacheDir, 0777);     chmod($CacheDir, 0777); }  function AutoCache($contents) {     global $CacheUrl;     $fp = fopen($CacheUrl, 'wb');     $contents = "<!-- 缓存时间 " . (date("Y-m-d H:i:s", time())) . " -->\n" . $contents;     fwrite($fp, gzcompress($contents));     fclose($fp);     chmod($CacheUrl, 0777);     return $contents; }  ob_start('AutoCache'); clearstatcache();

长期永久缓存

• 创建一个PHP文件，例如 content.php，内容如下：

  <?php define('CACHE_ROOT', dirname(__FILE__) . DIRECTORY_SEPARATOR . 'cacheFile'); define('CACHE_FIX', '.php'); date_default_timezone_set("Asia/Shanghai");  $CacheName = md5($_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']) . CACHE_FIX; $CacheDir = CACHE_ROOT . DIRECTORY_SEPARATOR . substr($CacheName, 0, 1); $CacheUrl = $CacheDir . DIRECTORY_SEPARATOR . $CacheName;  if (file_exists($CacheUrl)) {     echo str_replace("{time181}", date("Y-m-d h:i:m", time() - 1440), gzuncompress(file_get_contents($CacheUrl)));     exit; } elseif (!file_exists($CacheDir)) {     if (!file_exists(CACHE_ROOT)) {         mkdir(CACHE_ROOT, 0777);         chmod(CACHE_ROOT, 0777);     }     mkdir($CacheDir, 0777);     chmod($CacheDir, 0777); }  function AutoCache($contents) {     global $CacheUrl;     $fp = fopen($CacheUrl, 'wb');     $contents = "<!-- 缓存时间 " . (date("Y-m-d H:i:s", time())) . " -->\n" . $contents;     fwrite($fp, gzcompress($contents));     fclose($fp);     chmod($CacheUrl, 0777);     return str_replace("{time181}", date("Y-m-d h:i:m", time() - 1440), $contents); }  ob_start('AutoCache'); clearstatcache();