php自身带功能，将session的数据从之前的files 改变到其他任何地方。比如mysql redis等等，方便你分布式的集群应用。 看一下原理 <?php /** *Session open (called by session_start( )) *Session close (called at page end) *Session read (called after session_start( ) ) *Session write (called when session data is to be written) *Session destroy (called by session_destroy( … 继续阅读 →