(PHP 3>= 3.0.10, PHP 4 >= 4.0.0)
posix_getsid -- Get the current sid of the process
Description
int posix_getsid (int pid)
Return the sid of the process pid. If
pid is 0, the sid of the current process
is returned.
This is not a POSIX function, but is common on System V systems.
If your system does not support this function at system level,
this PHP function will always return FALSE.