&reftitle.install;

&installation.enabled.disable; `--disable-session`

To use shared memory allocation (mm) for session storage configure PHP `--with-mm[=DIR]`.

&windows.builtin;

By default, all data related to a particular session will be stored in a file in the directory specified by the session.save_path INI option. A file for each session (regardless of if any data is associated with that session) will be created. This is due to the fact that a session is opened (a file is created) but no data is even written to that file. Note that this behavior is a side-effect of the limitations of working with the file system and it is possible that a custom session handler (such as one which uses a database) does not keep track of sessions which store no data.