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();