. PHP Manual . Prev . Next . (PHP 4 >= 4.0.2) posix_setegid -- Set the effective GID of the current process . 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. Prev . Home . Next . posix_setgid . Up . posix_getgroups