ThinkPHP/Library/Think/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);
		}