【thinkphp3.1.x】thinkphp3.1.x中有关memcache缓存相关的文件

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一、memcache缓存类文件:'tp\ThinkPHP\Extend\Driver\Cache\CacheMemcache.class.php'
<?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]// +----------------------------------------------------------------------// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: liu21st <liu21st@gmail.com>// +----------------------------------------------------------------------defined('THINK_PATH') or exit();/** * Memcache缓存驱动 * @category   Extend * @package  Extend * @subpackage  Driver.Cache * @author    liu21st <liu21st@gmail.com> */class CacheMemcache extends Cache {    /**     * 架构函数     * @param array $options 缓存参数     * @access public     */    function __construct($options=array()) {        if ( !extension_loaded('memcache') ) {            throw_exception(L('_NOT_SUPPERT_').':memcache');        }        $options = array_merge(array (            'host'        =>  C('MEMCACHE_HOST') ? C('MEMCACHE_HOST') : '127.0.0.1',            'port'        =>  C('MEMCACHE_PORT') ? C('MEMCACHE_PORT') : 11211,            'timeout'     =>  C('DATA_CACHE_TIMEOUT') ? C('DATA_CACHE_TIMEOUT') : false,            'persistent'  =>  false,        ),$options);        $this->options      =   $options;        $this->options['expire'] =  isset($options['expire'])?  $options['expire']  :   C('DATA_CACHE_TIME');        $this->options['prefix'] =  isset($options['prefix'])?  $options['prefix']  :   C('DATA_CACHE_PREFIX');                $this->options['length'] =  isset($options['length'])?  $options['length']  :   0;                $func               =   $options['persistent'] ? 'pconnect' : 'connect';        $this->handler      =   new Memcache;        $options['timeout'] === false ?            $this->handler->$func($options['host'], $options['port']) :            $this->handler->$func($options['host'], $options['port'], $options['timeout']);    }    /**     * 读取缓存     * @access public     * @param string $name 缓存变量名     * @return mixed     */    public function get($name) {        N('cache_read',1);        return $this->handler->get($this->options['prefix'].$name);    }    /**     * 写入缓存     * @access public     * @param string $name 缓存变量名     * @param mixed $value  存储数据     * @param integer $expire  有效时间（秒）     * @return boolen     */    public function set($name, $value, $expire = null) {        N('cache_write',1);        if(is_null($expire)) {            $expire  =  $this->options['expire'];        }        $name   =   $this->options['prefix'].$name;        if($this->handler->set($name, $value, 0, $expire)) {            if($this->options['length']>0) {                // 记录缓存队列                $this->queue($name);            }            return true;        }        return false;    }    /**     * 删除缓存     * @access public     * @param string $name 缓存变量名     * @return boolen     */    public function rm($name, $ttl = false) {        $name   =   $this->options['prefix'].$name;        return $ttl === false ?            $this->handler->delete($name) :            $this->handler->delete($name, $ttl);    }    /**     * 清除缓存     * @access public     * @return boolen     */    public function clear() {        return $this->handler->flush();    }}
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