下载：https://github.com/nicolasff/phpredis/archive/2.2.4.tar.gz
tar zxvf phpredis-2.2.4.tar.gz #解压
cd phpredis-2.2.4 #进入安装目录
phpize./configure
make
sudo make install
修改配置文件
sudo vim /etc/php5/fpm/php.ini
sudo service nginx restart
sudo /etc/init.d/php5-fpm restart
修改命令行配置文件
sudo vim cd /etc/php5/cli/php.ini
sudo /etc/init.d/php5-fpm restart
