/** * 存储/获取缓存 * @param string $key 缓存名称 * @param mixed $value 向缓存赋值 * @param int $lifetime 生存时间,秒,如一小时是3600 * @return boolean */ function cache($key, $value = null, $lifetime = 3600) { $cache = new Cached(); if ($value === '') { return $cache->delete($key); } if ($value === null) { return $cache->get($key); } return $cache->set($key, $value, $lifetime); }