//查看当前PHP环境已安装的扩展模块
[~]# php -m 

//查看是否存在
[~]# which phpize
[~]# which php-config

//有的话就不需要安装下面的开发包
//安装php开发包，包含了上面的两个包
[~]# yum install php-devel

//下载安装包
[~]# wget https://github.com/phpredis/phpredis/archive/develop.zip /path

//解压，生成phpredis-develop文件
[~]# unzip develop.zip

//生成configure文件
[~]# cd phpredis-develop
[~]# /usr/bin/phpize
[~]# ./configure --with-php-config=/your/php/install/etc/php-config

//编译，如果非root用户，使用 sudo make install
[~]# make && [sudo] make install 

//查找当前PHP使用的php.ini文件位置
[~]# php --ini
[~]# [sudo] vim /etc/php.ini
//最后一行增加
extension=redis.so
//查看是否添加成功
[~]# php -m

PHP Warning:  PHP Startup: redis: Unable to initialize module
Module compiled with module API=20090626
PHP    compiled with module API=20100525
These options need to match in Unknown on line 0