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

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一、redis缓存类文件:'tp\ThinkPHP\Extend\Driver\Cache\CacheRedis.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();/** * Redis缓存驱动  * 要求安装phpredis扩展：https://github.com/nicolasff/phpredis * @category   Extend * @package  Extend * @subpackage  Driver.Cache * @author    尘缘 <130775@qq.com> */class CacheRedis extends Cache { /** * 架构函数     * @param array $options 缓存参数     * @access public     */    public function __construct($options=array()) {        if ( !extension_loaded('redis') ) {            throw_exception(L('_NOT_SUPPERT_').':redis');        }        if(empty($options)) {            $options = array (                'host'          => C('REDIS_HOST') ? C('REDIS_HOST') : '127.0.0.1',                'port'          => C('REDIS_PORT') ? C('REDIS_PORT') : 6379,                'timeout'       => C('DATA_CACHE_TIMEOUT') ? C('DATA_CACHE_TIMEOUT') : false,                'persistent'    => false,            );        }        $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 Redis;        $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);        $value = $this->handler->get($this->options['prefix'].$name);        $jsonData  = json_decode( $value, true );        return ($jsonData === NULL) ? $value : $jsonData;//检测是否为JSON数据 true 返回JSON解析数组, false返回源数据    }    /**     * 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;        //对数组/对象数据进行缓存处理，保证数据完整性        $value  =  (is_object($value) || is_array($value)) ? json_encode($value) : $value;        if(is_int($expire)) {            $result = $this->handler->setex($name, $expire, $value);        }else{            $result = $this->handler->set($name, $value);        }        if($result && $this->options['length']>0) {            // 记录缓存队列            $this->queue($name);        }        return $result;    }    /**     * 删除缓存     * @access public     * @param string $name 缓存变量名     * @return boolen     */    public function rm($name) {        return $this->handler->delete($this->options['prefix'].$name);    }    /**     * 清除缓存     * @access public     * @return boolen     */    public function clear() {        return $this->handler->flushDB();    }}
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