wget https://codeload.github.com/phpredis/phpredis/zip/2.2.4
cd phpredis-2.2.4/
phpize
./configure --with-php-config=/usr/bin/php-config
make prefix=/usr/local all
sudo make prefix=/usr/local install
# phpinfo();exit;
# view phpinfo(), find php.ini
# add ‘extension=redis.so’ to php.ini
sudo service apache2 restart
# review phpinfo()
ref
http://www.verydemo.com/demo_c116_i16353.html
https://github.com/phpredis/phpredis/tree/2.2.4