see
http://www.openna.com/documentations/articles/php/part3.phpalso
XCIII. Session handling functions
http://www.zend.com/manual/ref.session.php
http://www.openna.com/documentations/articles/php/part3.phpalso
XCIII. Session handling functions
http://www.zend.com/manual/ref.session.php
; Handler used to store/retrieve data.
session.save_handler = files; Argument passed to save_handler. In the case of files, this is the path
; where data files are stored. Note: Windows users have to change this
; variable in order to use PHP's session functions.
;这下面的这个路径目录必须存在
session.save_path = c:\php\sessiondata; Whether to use cookies.
session.use_cookies = 1
; Name of the session (used as cookie name).
session.name = PHPSESSID; Initialize session on request startup.
session.auto_start = 0; Lifetime in seconds of cookie or, if 0, until browser is restarted.
session.cookie_lifetime = 0; The path for which the cookie is valid.
session.cookie_path = /; The domain for which the cookie is valid.
session.cookie_domain =; Handler used to serialize data. php is the standard serializer of PHP.
session.serialize_handler = php; Percentual probability that the 'garbage collection' process is started
; on every session initialization.
session.gc_probability = 1; After this number of seconds, stored data will be seen as 'garbage' and
; cleaned up by the garbage collection process.
session.gc_maxlifetime = 1440; Check HTTP Referer to invalidate externally stored URLs containing ids.
; HTTP_REFERER has to contain this substring for the session to be
; considered as valid.
session.referer_check =; How many bytes to read from the file.
session.entropy_length = 0; Specified here to create the session id.
session.entropy_file =;session.entropy_length = 16;session.entropy_file = /dev/urandom; Set to {nocache,private,public} to determine HTTP caching aspects.
session.cache_limiter = nocache; Document expires after n minutes.
session.cache_expire = 180; use transient sid support if enabled by compiling with --enable-trans-sid.
session.use_trans_sid = 1url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"