Cache.class.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think;
/**
* 缓存管理类
*/
class Cache
{
/**
* 操作句柄
*
* @var string
* @access protected
*/
protected $handler;
/**
* 缓存连接参数
*
* @var integer
* @access protected
*/
protected $options = array();
/**
* 连接缓存
*
* @access public
* @param string $type
* 缓存类型
* @param array $options
* 配置数组
* @return object
*/
public function connect($type = '', $options = array())
{
if (empty($type)) {
$type = C('DATA_CACHE_TYPE');
}
$class = strpos($type, '\\') ? $type : 'Think\\Cache\\Driver\\' . ucwords(strtolower($type));
if (class_exists($class)) {
$cache = new $class($options);
} else {
E(L('_CACHE_TYPE_INVALID_') . ':' . $type);
}
return $cache;
}
/**
* 取得缓存类实例
*
* @static
*
* @access public
* @return mixed
*/
static function getInstance($type = '', $options = array())
{
static $_instance = array();
$guid = $type . to_guid_string($options);
if (! isset($_instance[$guid])) {
$obj = new Cache();
$_instance[$guid] = $obj->connect($type, $options);
}
return $_instance[$guid];
}
public function __get($name)
{
return $this->get($name);
}
public function __set($name, $value)
{
return $this->set($name, $value);
}
public function __unset($name)
{
$this->rm($name);
}
public function setOptions($name, $value)
{
$this->options[$name] = $value;
}
public function getOptions($name)
{
return $this->options[$name];
}
/**
* 队列缓存
*
* @access protected
* @param string $key
* 队列名
* @return mixed
*/
protected function queue($key)
{
static $_handler = array(
'file' => array(
'F',
'F'
),
'xcache' => array(
'xcache_get',
'xcache_set'
),
'apc' => array(
'apc_fetch',
'apc_store'
)
);
$queue = isset($this->options['queue']) ? $this->options['queue'] : 'file';
$fun = isset($_handler[$queue]) ? $_handler[$queue] : $_handler['file'];
$queue_name = isset($this->options['queue_name']) ? $this->options['queue_name'] : 'think_queue';
$value = $fun[0]($queue_name);
if (! $value) {
$value = array();
}
// 进列
if (false === array_search($key, $value)) {
array_push($value, $key);
}
if (count($value) > $this->options['length']) {
// 出列
$key = array_shift($value);
// 删除缓存
$this->rm($key);
if (APP_DEBUG) {
// 调试模式下，记录出列次数
N($queue_name . '_out_times', 1);
}
}
return $fun[1]($queue_name, $value);
}
public function __call($method, $args)
{
// 调用缓存类型自己的方法
if (method_exists($this->handler, $method)) {
return call_user_func_array(array(
$this->handler,
$method
), $args);
} else {
E(__CLASS__ . ':' . $method . L('_METHOD_NOT_EXIST_'));
return;
}
}
}