/**

* 缓存驱动

* @author Devil

* @version 1.0.0

*/

class CacheLibrary

{

private $c_obj;

private $c_time;

/**

* [__construct 构造方法]

*/

public function __construct($host, $port = 11211)

{

/* 实例化memcached */

$this->c_obj = new Memcached();

if(!$this->c_obj->addServer($host, $port)) Api_Return(L('code_413'), 413);

/* 基础参数设置 */

$this->c_time = empty(C('cache')['time']) ? 0 : C('cache')['time'];

}

/**

* [GetTime 获取缓存时间]

* @return [int] [缓存时间]

*/

private function GetTime($time = 0)

{

return (intval($time) > 0) ? intval($time) : $this->c_time;

}

/**

* [Add 缓存添加]

* @param [string] $key [索引]

* @param [mixed] $val [值]

* @param [integer] $time [过期时间(单位秒), 0永久, 或时间戳]

* @return [boolean] [成功true, 失败false]

*/

public function Add($key, $val, $time = 0)

{

return $this->c_obj->add($key, $val, $this->GetTime($time));

}

/**

* [Set 缓存替换]

* @param [string] $key [索引]

* @param [mixed] $val [值]

* @param [integer] $time [过期时间(单位秒), 0永久, 或时间戳]

* @return [boolean] [成功true, 失败false]

*/

public function Set($key, $val, $time = 0)

{

return $this->c_obj->set($key, $val, $this->GetTime($time));

}

/**

* [SetMulti 设置多个索引的缓存数据]

* @param [type] $key_all [索引数组]

* @param [integer] $time [过期时间(单位秒), 0永久, 或时间戳]

* @return [boolean] [成功true, 失败false]

*/

public function SetMulti($key_all, $time = 0)

{

return $this->c_obj->setMulti($key_all, $time);

}

/**

* [Append 向已存在索引后面追加数据]

* @param [string] $key [索引]

* @param [string] $val [追加的数据(字符串)]

*/

public function Append($key, $val)

{

$this->setOption();

return $this->c_obj->append($key, $val);

}

/**

* [Prepend 向已存在索引前面追加数据]

* @param [string] $key [索引]

* @param [string] $val [追加的数据(字符串)]

*/

public function Prepend($key, $val)

{

$this->setOption();

return $this->c_obj->prepend($key, $val);

}

/**

* [Replace 替换已存在索引下的元素]

* @param [string] $key [索引]

* @param [mixed] $val [值]

* @param [integer] $time [过期时间(单位秒), 0永久, 或时间戳]

* @return [boolean] [成功true, 失败false]

*/

public function Replace($key, $val, $time = 0)

{

$this->c_obj->replace($key, $val, $time);

}

/**

* [setOption 设置选项]

*/

private function setOption()

{

$this->c_obj->setOption(Memcached::OPT_COMPRESSION, false);

}

/**

* [Fetch 抓取下一个结果]

* @param [string] $key_all [索引名]

* @param [boolean] $cas [是否返回长度, 是true, 否false默认]

*/

public function Fetch($key_all, $cas = false)

{

$this->GetDelayed($key_all, $cas);

return $this->c_obj->fetch();

}

/**

* [FetchAll 抓取所有剩余的结果]

* @param [string] $key_all [索引名]

* @param [boolean] $cas [是否返回长度, 是true, 否false默认]

*/

public function FetchAll($key_all, $cas = false)

{

$this->GetDelayed($key_all, $cas);

return $this->c_obj->fetchAll();

}

/**

* [GetDelayed 请求多个索引]

* @param [string] $key_all [索引名]

* @param [boolean] $cas [是否返回长度, 是true, 否false默认]

*/

private function GetDelayed($key_all, $cas)

{

$this->c_obj->getDelayed($key_all, $cas);

}

/**

* [Get 缓存获取]

* @param [string] $key [索引]

* @return [mixed] [当前索引对应的数据]

*/

public function Get($key)

{

return $this->c_obj->get($key);

}

/**

* [GetMulti 获取多个索引的缓存数据]

* @param [type] $key_all [索引数组]

*/

public function GetMulti($key_all)

{

return $this->c_obj->getMulti($key_all);

}

/**

* [Delete 删除一个索引]

* @param [string] $key [索引]

* @param [integer] $time [等待时间(单位秒), 0立即, 或时间戳]

* @return [boolean] [成功true, 失败false]

*/

public function Delete($key, $time = 0)

{

return $this->c_obj->delete($key, $time);

}

/**

* [DeleteMulti 删除多个索引]

* @param [array] $key_all [索引数组]

* @param [integer] $time [过期时间(单位秒), 0立即, 或时间戳]

* @return [boolean或array] [成功true, 失败false]

*/

public function DeleteMulti($key_all, $time = 0)

{

$s = $this->c_obj->deleteMulti($key_all, $time);

if(empty($s)) return false;

foreach($s as $key=>$val)

{

if($val !== true) if($this->Get($key) == false) $s[$key] = true;

}

return $s;

}

/**

* [Flush 作废所有元素]

* @param [integer] $time [等待时间(单位秒), 0立即]

* @return [boolean] [成功true, 失败false]

*/

public function Flush($time = 0)

{

return $this->c_obj->flush($time);

}

}

?>