我的习惯是直接修改php.inisession.save_handler = redissession.save_path = "tcp://host1:6379?weight=1, tcp://host2:6379?weight=2&timeout=2.5, tcp://host3:6379?weight=2&persistent=1"weight 服务器权重persistent 持久性(整数,应该是1或0)timeout 超时时长