session_module_name()
(PHP 4, PHP 5, PHP 7)
获取/设置会话模块名称
说明
session_module_name([string $module]): string
session_module_name()获取或设置会话模块名称,也被称做:session.save_handler。
参数
- $module
如果指定$module参数,则使用指定值作为会话模块。禁止传入"user"作为此参数的值,请使用set_set_save_handler()来设置用户自定义的会话处理器。
返回值
返回当前所用的会话模块名称。
更新日志
版本 | 说明 |
---|---|
7.2.0 | 不允许设置模块名称为"user"。在之前的版本中,如果设置为"user",那么会被静默的忽略到。 |
This function is used to set the Session Module at site or script level. The global configuration can be done in php.ini under the [Session] section and with the name of "session.save_handler". The sessions are saved in files by default, like so: session.save_handler = files But with this configuration you set one of your websites to use some other session module (if you have them installed and extension loaded with PHP), like so: <?php // NOTE: You must use this function before starting session with session_start(); to make it work properly session_module_name('memcache'); // or pgsql or redis etc // You'll need to define a save path also, if the module is other than files, like so: session_save_path('localhost:11211'); // memcache uses port 11211 // or you can use multiple for load balancing: session_save_path('localhost:11211:41,otherhost:11211:60') // First part is hostname or path to socket, next is port and the last is the weight for that server //The function also returns the value of the current session module. echo session_module_name(); // will print memcache in our case // or maybe a check if(session_module_name() != 'memcache'){ // Do something, throw an exception maybe }
was looking for a rather comprehensive list of modules, and found http://stackoverflow.com/questions/8415962/what-exactly-phps-function-session-module-name-is-for but there are more.