129 lines
3.8 KiB
PHP
129 lines
3.8 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think\cache\driver;
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use think\Cache;
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use think\Exception;
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/**
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* Redis缓存驱动，适合单机部署、有前端代理实现高可用的场景，性能最好
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* 有需要在业务层实现读写分离、或者使用RedisCluster的需求，请使用Redisd驱动
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*
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* 要求安装phpredis扩展：https://github.com/nicolasff/phpredis
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* @author 尘缘 <130775@qq.com>
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*/
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class Redis
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{
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protected $handler = null;
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protected $options = [
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'host' => '127.0.0.1',
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'port' => 6379,
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'password' => '',
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'timeout' => 0,
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'expire' => 0,
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'persistent' => false,
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'prefix' => '',
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];
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/**
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* 架构函数
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* @param array $options 缓存参数
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* @access public
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*/
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public function __construct($options = [])
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{
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if (!extension_loaded('redis')) {
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throw new \BadFunctionCallException('not support: redis');
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}
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if (!empty($options)) {
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$this->options = array_merge($this->options, $options);
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}
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$func = $this->options['persistent'] ? 'pconnect' : 'connect';
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$this->handler = new \Redis;
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$this->handler->$func($this->options['host'], $this->options['port'], $this->options['timeout']);
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if ('' != $this->options['password']) {
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$this->handler->auth($this->options['password']);
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}
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}
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/**
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* 读取缓存
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* @access public
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* @param string $name 缓存变量名
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* @return mixed
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*/
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public function get($name)
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{
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$value = $this->handler->get($this->options['prefix'] . $name);
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$jsonData = json_decode($value, true);
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// 检测是否为JSON数据 true 返回JSON解析数组, false返回源数据 byron sampson<xiaobo.sun@qq.com>
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return (null === $jsonData) ? $value : $jsonData;
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}
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/**
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* 写入缓存
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* @access public
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* @param string $name 缓存变量名
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* @param mixed $value 存储数据
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* @param integer $expire 有效时间（秒）
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* @return boolean
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*/
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public function set($name, $value, $expire = null)
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{
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if (is_null($expire)) {
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$expire = $this->options['expire'];
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}
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$name = $this->options['prefix'] . $name;
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//对数组/对象数据进行缓存处理，保证数据完整性 byron sampson<xiaobo.sun@qq.com>
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$value = (is_object($value) || is_array($value)) ? json_encode($value) : $value;
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if (is_int($expire) && $expire) {
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$result = $this->handler->setex($name, $expire, $value);
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} else {
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$result = $this->handler->set($name, $value);
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}
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return $result;
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}
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/**
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* 删除缓存
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* @access public
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* @param string $name 缓存变量名
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* @return boolean
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*/
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public function rm($name)
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{
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return $this->handler->delete($this->options['prefix'] . $name);
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}
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/**
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* 清除缓存
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* @access public
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* @return boolean
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*/
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public function clear()
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{
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return $this->handler->flushDB();
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}
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/**
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* 返回句柄对象，可执行其它高级方法
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*
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* @access public
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* @return object
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*/
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public function handler()
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{
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return $this->handler;
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}
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}
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