wget https://codeload.github.com/nicolasff/phpredis/zip/master
unzip master
cd phpredis-master/
whereis phpize
/alidata/server/php-5.5.7/bin/phpize
./configure //source /etc/profile
make && make install
php -i | grep .ini
vi /alidata/server/php/etc/php.ini //extension=redis.so
/etc/init.d/php-fpm restart
php -m