posix_setegid
(PHP 4 >= 4.0.2)
posix_setegid -- Set the effective GID of the current process
Description
bool
posix_setegid ( int gid)
Set the effective group ID of the current process. This is a privileged function and you need appropriate privileges (usually root) on your system to be able to perform this function.
Returns TRUE on success, FALSE otherwise.