180 lines
5.3 KiB
PHP
180 lines
5.3 KiB
PHP
<?php
|
||
// +----------------------------------------------------------------------
|
||
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
||
// +----------------------------------------------------------------------
|
||
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
|
||
// +----------------------------------------------------------------------
|
||
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
||
// +----------------------------------------------------------------------
|
||
// | Author: liu21st <liu21st@gmail.com>
|
||
// +----------------------------------------------------------------------
|
||
|
||
namespace think\cache\driver;
|
||
|
||
use think\cache\Driver;
|
||
|
||
/**
|
||
* 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
|
||
* 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
|
||
*
|
||
* 要求安装phpredis扩展：https://github.com/nicolasff/phpredis
|
||
* @author 尘缘 <130775@qq.com>
|
||
*/
|
||
class Redis extends Driver
|
||
{
|
||
protected $options = [
|
||
'host' => '127.0.0.1',
|
||
'port' => 6379,
|
||
'password' => '',
|
||
'select' => 0,
|
||
'timeout' => 0,
|
||
'expire' => 0,
|
||
'persistent' => false,
|
||
'prefix' => '',
|
||
];
|
||
|
||
/**
|
||
* 构造函数
|
||
* @param array $options 缓存参数
|
||
* @access public
|
||
*/
|
||
public function __construct($options = [])
|
||
{
|
||
if (!extension_loaded('redis')) {
|
||
throw new \BadFunctionCallException('not support: redis');
|
||
}
|
||
if (!empty($options)) {
|
||
$this->options = array_merge($this->options, $options);
|
||
}
|
||
$func = $this->options['persistent'] ? 'pconnect' : 'connect';
|
||
$this->handler = new \Redis;
|
||
$this->handler->$func($this->options['host'], $this->options['port'], $this->options['timeout']);
|
||
|
||
if ('' != $this->options['password']) {
|
||
$this->handler->auth($this->options['password']);
|
||
}
|
||
|
||
if (0 != $this->options['select']) {
|
||
$this->handler->select($this->options['select']);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 判断缓存
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @return bool
|
||
*/
|
||
public function has($name)
|
||
{
|
||
return $this->handler->get($this->getCacheKey($name)) ? true : false;
|
||
}
|
||
|
||
/**
|
||
* 读取缓存
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @param mixed $default 默认值
|
||
* @return mixed
|
||
*/
|
||
public function get($name, $default = false)
|
||
{
|
||
$value = $this->handler->get($this->getCacheKey($name));
|
||
if (is_null($value)) {
|
||
return $default;
|
||
}
|
||
$jsonData = json_decode($value, true);
|
||
// 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>
|
||
return (null === $jsonData) ? $value : $jsonData;
|
||
}
|
||
|
||
/**
|
||
* 写入缓存
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @param mixed $value 存储数据
|
||
* @param integer|\DateTime $expire 有效时间（秒）
|
||
* @return boolean
|
||
*/
|
||
public function set($name, $value, $expire = null)
|
||
{
|
||
if (is_null($expire)) {
|
||
$expire = $this->options['expire'];
|
||
}
|
||
if ($expire instanceof \DateTime) {
|
||
$expire = $expire->getTimestamp() - time();
|
||
}
|
||
if ($this->tag && !$this->has($name)) {
|
||
$first = true;
|
||
}
|
||
$key = $this->getCacheKey($name);
|
||
//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>
|
||
$value = (is_object($value) || is_array($value)) ? json_encode($value) : $value;
|
||
if (is_int($expire) && $expire) {
|
||
$result = $this->handler->setex($key, $expire, $value);
|
||
} else {
|
||
$result = $this->handler->set($key, $value);
|
||
}
|
||
isset($first) && $this->setTagItem($key);
|
||
return $result;
|
||
}
|
||
|
||
/**
|
||
* 自增缓存（针对数值缓存）
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @param int $step 步长
|
||
* @return false|int
|
||
*/
|
||
public function inc($name, $step = 1)
|
||
{
|
||
$key = $this->getCacheKey($name);
|
||
return $this->handler->incrby($key, $step);
|
||
}
|
||
|
||
/**
|
||
* 自减缓存（针对数值缓存）
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @param int $step 步长
|
||
* @return false|int
|
||
*/
|
||
public function dec($name, $step = 1)
|
||
{
|
||
$key = $this->getCacheKey($name);
|
||
return $this->handler->decrby($key, $step);
|
||
}
|
||
|
||
/**
|
||
* 删除缓存
|
||
* @access public
|
||
* @param string $name 缓存变量名
|
||
* @return boolean
|
||
*/
|
||
public function rm($name)
|
||
{
|
||
return $this->handler->delete($this->getCacheKey($name));
|
||
}
|
||
|
||
/**
|
||
* 清除缓存
|
||
* @access public
|
||
* @param string $tag 标签名
|
||
* @return boolean
|
||
*/
|
||
public function clear($tag = null)
|
||
{
|
||
if ($tag) {
|
||
// 指定标签清除
|
||
$keys = $this->getTagItem($tag);
|
||
foreach ($keys as $key) {
|
||
$this->handler->delete($key);
|
||
}
|
||
$this->rm('tag_' . md5($tag));
|
||
return true;
|
||
}
|
||
return $this->handler->flushDB();
|
||
}
|
||
|
||
}
|