- class DataCache
- {
- /**
- * 数组转换
- *
- * @param array $array
- * @param string $arrayName
- * @param array $level
- *
- * @return string
- */
- private function arrayEval($array, $arrayName = '', $level = 0)
- {
- $space = str_repeat("t", $level);
-
- if (emptyempty($arrayName))
- {
- $evaluate = "arrayn$space(n";
- }
- else
- {
- $evaluate = "${$arrayName} = arrayn$space(n";
- }
-
- $space2 = str_repeat("t", $level + 1);
- $comma = $space2;
- if (!emptyempty($array))
- {
- foreach ($array as $key => $val)
- {
- $key = is_string($key) ? ''' . addcslashes($key, ''\') . ''' : $key;
- $val = !is_array($val) && (!preg_match('/^-?[1-9]d*$/', $val) || strlen($val) > 12) ? ''' . addcslashes($val, ''\') . ''' : $val;
- if (is_array($val))
- {
- $evaluate .= "$comma$key => " . arrayEval($val, '', $level + 1);
- }
- else
- {
- $evaluate .= "$comma$key => $val";
- }
- $comma = ",n$space2";
- }
- }
- $evaluate .= "n$space)";
-
- // 最后才需要一个“;”
- if ($level == 0)
- {
- $evaluate .= ";";
- }
- return $evaluate;
- }
-
- /**
- * 写入缓存
- *
- * @param string $path
- * @param string $arrayName
- * @param array $data
- *
- * @return boolean
- */
- public static function writeCache($path, $arrayName, $data)
- {
- if ($handle = fopen($path, 'w+'))
- {
- $data = self::arrayEval($data, $arrayName);
-
- $dataConvert = "
- flock($handle, LOCK_EX);
- $rs = fputs($handle, $dataConvert);
- flock($handle, LOCK_UN);
- fclose($handle);
- if ($rs !== false)
- {
- return true;
- }
- }
- return false;
- }
- }
- ?>
调用方法:
- /**
- * 生成文件缓存
- *
- * @param string $filePath 缓存文件的保存路径
- * @param string $arrayName 存放在缓存文件中的数组名称
- * @param array $data 数据
- *
- * @return boolean
- */
- DataCache::writeCache($filePath, $arrayName, $data);
memcache来缓存数据,这个文件缓存的类:
- /**
- * 文件缓存类
- * 提供文件缓存
- */
- class Cache_FileCache{
-
- /**
- * 设置缓存
- * @param $key 缓存的关键字key
- * @param $data 缓存的内容
- * @param $cacheLife 缓存时间(单位为秒)如果为0 则表示无限时间
- * @return Bool
- */
- public static function setCache($key,$data,$cacheLife)
- {
- if(file_exists(__SITE_FILE_CACHE))
- {
- @$file = __SITE_FILE_CACHE . "/" . $key .".php";
- $cache = array();
- $time = __SYS_TIME;
- $cache['content'] = $data;
- $cache['expire'] = $cacheLife === 0 ? 0 : $time+$cacheLife;
- $cache['mtime'] = $time;
- $cache = serialize($cache);
- $setReslut = @file_put_contents($file,$cache) or self::error(__line__,"文件写入出错");
- $chmodReslut = @chmod($file,0777) or self::error(__line__,"设定文件权限失败");
- if($setReslut && $chmodReslut)
- {
- return true;
- }
- else
- {
- return false;
- }
- }
- }
-
- /**
- * 得到缓存数据
- * @param $key 缓存的关键字key
- * @return array
- */
- public static function getCache($key)
- {
- @$file = __SITE_FILE_CACHE . "/" . $key .".php";
- if(file_exists($file))
- {
- $data = @file_get_contents($file);
- $data = unserialize($data);
- if($data['expire']==0 || $data['expire'] > __SYS_TIME)
- {
- return $data['content'];
- }
- else
- {
- unlink($file);
- return array();
- }
- }
- }
-
- /**
- * 删除缓存文件
- * @param $key 缓存$key
- * @return Bool
- */
- public static function delCache($key)
- {
- if (@unlink(__SITE_FILE_CACHE."/".$key.".php"))
- {
- return true;
- }
- else
- {
- return false;
- }
- }
-
- /**
- * 清除所有缓存文件
- * @return Bool
- */
-
- public static function clearAllCache()
- {
- $files = scandir(__SITE_FILE_CACHE);
- foreach ($files as $val)
- {
- @unlink(__SITE_FILE_CACHE."/".$val);
- }
- }
-
- /**
- * 出错处理函数
- * @param $line 行数
- * @param $msg 信息
- */
- public static function error($line,$msg)
- {
- die("出错文件:".__file__."/n出错行:$line/n错误信息:$msg");
- }
- }
- ?>
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