首先要做的就是安装redis
安装方法:http://redis.io/download
InstallationDownload, extract and compile Redis with:$ wget http://download.redis.io/releases/redis-2.8.19.tar.gz$ tar xzf redis-2.8.19.tar.gz$ cd redis-2.8.19$ makeThe binaries that are now compiled are available in the src directory. Run Redis with:$ src/redis-serverYou can interact with Redis using the built-in client:$ src/redis-cliredis> set foo barOKredis> get foo"bar"
然后是安装phpredis扩展 redis.so
安装方法参考:http://www.lecloud.net/post/3378834922/install-redis-php-extension-phpredis-with
///////////////////////////////以下代码为参考网站安装方法,请根据自己的实际安装位置自由调整,/////////////////////////////cd /usr/localsudo mkdir srccd /usr/local/srcsudo mkdir phpredis-buildcd phpredis-buildsudo git clone --depth 1 git://github.com/owlient/phpredis.gitcd phpredissudo phpizesudo ./configuresudo makesudo make installcd /usr/local/lib/php5/sudo gedit php.ini如果没有配置 extension_dir 的话请配置到你的extension的路径cp redis.so /usr/local/lib/php5/extension/加入一行: extension = redis.so 重启nginx 和 php-fpm 就输出phpinfo 就能看到redis 扩展安装完成
设置php.ini
找到; session.save_handler = files这一行 ,修改为 session.save_handler = redis,把原来的session存储方式改微redis方式这样会提高速度,原因是redis是在内存读取必然比在文件读取要快一些
找到; session.save_path = "/tmp"这一行 ,修改为 session.save_path = "tcp://127.0.0.1:8888",这是指向了本地的tcp服务,这个服务一会是由我们的redis启动
重启nginx 和 php-fpm 就输出phpinfo 就能看到session 保存方式和路径发生了改变
启动redis服务
redis-server --port 8888 &
编写php代码
<?php header("Content-type:text/html;charset=utf-8");session_start();//这个很重要$_SESSION['test_session']= @array('name' =>'fanqie' , 'ccc'=>'hello redis ');$redis = new redis();$redis->connect('127.0.0.1', 8888);echo 'sessionid>>>>>>> PHPREDIS_SESSION:' . session_id();echo '<br/>';echo '<br/>';//redis用session_id作为key并且是以string的形式存储echo '通过php用redis获取>>>>>>>'.$redis->get('PHPREDIS_SESSION:' . session_id());echo '<br/>';echo '<br/>';echo '通过php用session获取>>>>>>><br/>';echo '<pre class="brush:php;toolbar:false">';var_dump($_SESSION['test_session']);echo '';
页面输出,我们可以看出我们已经成功存储并且通过redis成功获取到了存储的值
sessionid>>>>>>> PHPREDIS_SESSION:fmd75d3dfrlkp43eh567f7dsi5通过php用redis获取>>>>>>>test_session|a:2:{s:4:"name";s:6:"fanqie";s:3:"ccc";s:12:"hello redis ";}通过php用session获取>>>>>>>array(2) { ["name"]=> string(6) "fanqie" ["ccc"]=> string(12) "hello redis "}
使用redis客户端查看在redis库中已经存储可以查询到hello redis 这条记录了
dangcheng@dangcheng-pc:~$ redis-cli -p 8888127.0.0.1:8888> select 0OK127.0.0.1:8888> keys *1) "PHPREDIS_SESSION:fmd75d3dfrlkp43eh567f7dsi5"127.0.0.1:8888> get PHPREDIS_SESSION:fmd75d3dfrlkp43eh567f7dsi5"test_session|a:2:{s:4:\"name\";s:6:\"fanqie\";s:3:\"ccc\";s:12:\"hello redis \";}"127.0.0.1:8888>

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