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1#
发表于 2008-3-11 16:07
| 只看该作者
- class ArrCache
- {
- var $ob_length;//前面缓冲的数据量
- var $path;//缓存文件存放路径
- var $fileName;//缓存文件名
- var $contents;//缓存内容
- var $cached;//是否缓存
- var $ext;//缓存文件扩展名
-
- /*
- * 构造函数,设定缓存文件存放目录,是否使用gzip
- * 缓存路径,“e:\localhost\cache”这样的绝对路径也可以
- */
- public function ArrCache($path = '/cache', $ext = 'ach', $gzip = false)
- {
- if ($gzip && ereg('gzip',$_SERVER['HTTP_ACCEPT_ENCODING']))
- {
- ob_start('ob_gzhandler');
- }
- else
- {
- ob_start();
- }
- $this->ext = $ext;
- if (substr($path, 1, 1) == ':')
- {
- $this->path = $path;
- }
- else
- {
- //$this->path = $_SERVER["DOCUMENT_ROOT"].'\\'.$path;
- $this->path = $_SERVER["DOCUMENT_ROOT"].$path;
- }//echo $this->path;
- }
- /*
- * 开始缓存
- * parameter 缓存变量,必须唯一,用它来区分不同的缓存块
- * time 缓冲时间,单位秒
- */
- public function begin($parameter = array(), $time = 60)
- {
- $this->fileName = $this->fileName($parameter);
- $this->contents = ob_get_contents();
- ob_clean();
- if (file_exists($this->fileName) && time() - filemtime($this->fileName) <= $time)
- {
- $fp = fopen($this->fileName, 'r');
- flock($fp, LOCK_SH);
- echo fread($fp, filesize($this->fileName));
- flock($fp, LOCK_UN);
- fclose($fp);
- $this->cached = true;
- return false;
- }
- else
- {
- $this->cached = false;
- return true;
- }
-
- }
- /*
- * 结束缓存
- * replace 为局部不缓存
- */
- public function end($replace = array())
- {
- $key = array();
- $value = array();
-
- $contents = ob_get_contents();
-
- if (!$this->cached)
- {
- $fp = fopen($this->fileName, "w");
- flock($fp, LOCK_EX);
- fwrite($fp, $contents);
- flock($fp, LOCK_UN);
- fclose($fp);
- }
-
- ob_clean();
- if (is_array($replace))
- {
- foreach($replace as $_key => $_value)
- {
- $key[] = '';
- $value[] = $_value;
- }
- $contents = str_replace($key, $value, $contents);
- }
- echo $this->contents.$contents;
- }
- public function clean($filter)
- {
- $array1 = array(' ', '+', '/', '\\', ':', '"', '<', '>', '|', '=', '-');
- $array2 = array('+0', '+1', '+2', '+3', '+4', '+7', '+8', '+9', '+a', '+b', '+c');
- $filter = str_replace($array1, $array2, $filter);
-
- $out = array('right' => array(), 'wrong' => array());
-
- $fileNames = glob($this->path.'\\'.$filter.'.'.$this->ext);
- foreach ($fileNames as $filename)
- {
- if (unlink($filename))
- {
- $out['right'][] = $filename;
- }
- else
- {
- $out['wrong'][] = $filename;
- }
- }
- return $out;
- }
- private function fileName($parameter)
- {
- $array = array();
- $array1 = array(' ', '+', '/', '\\', ':', '*', '?', '"', '<', '>', '|', '=', '-');
- $array2 = array('+0', '+1', '+2', '+3', '+4', '+5', '+6', '+7', '+8', '+9', '+a', '+b', '+c');
-
- if (is_array($parameter))
- {
- foreach ($parameter as $key => $value)
- {
- $array[] = $key.'='.str_replace($array1, $array2, $value);
- }
- }
- $string = join($array, '');
- $file=end(explode('/',$_SERVER['PHP_SELF']));
- // $filename = $this->path.'\\'.str_replace($array1, $array2, substr($_SERVER["SCRIPT_NAME"], 1,
- //strlen($_SERVER["SCRIPT_NAME"]) - 1)).$string.'.'.$this->ext;
- $filename = $this->path.'/'.$file.$string.'.'.$this->ext;//die($this->path);
- return $filename;
- }
- }
- ?>
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