php.ini
session.save_handle = redis
session.save_path = "tcp://10.1.100.152:6379?timeout=2&persistent=1&database=15&prefix=PHPREDIS_SESSION"
redis参考
http://www.runoob.com/redis/redis-conf.html
session redis存储
原文：http://haibo600.blog.51cto.com/1951311/1826144
