On 23.06.2021 at 13:41, Mathieu Dubois wrote: > Le 23/06/2021 à 12:01, Christoph M. Becker a écrit : > >> Before ::read() is called, open() is called. ::open() is suppossed to >> create the empty session data, if no data for the given session exist. >> This empty data string should then be returned from ::read(). If >> ::read() fails to read the data, it should return false (or actually any >> non-string value in the current implementation) to signal failure. > > I might be confused but the session id is not passed to ::open() so how > is it supposed to create the empty session data ? By using session_id ? Ah, right, ::open() is not supposed to create the empty session data. This can be done in ::read(); the built-in "files" handler does this, for instance; if the file does not exist and can't be created, ::read() fails. Christoph