## 例

`

     bool posix_setgid ( int $gid )

`

## 説明

Set the real group ID of the current process. This is a privileged function and needs appropriate privileges (usually root) on the system to be able to perform this function. The appropriate order of function calls is posix_setgid() first, posix_setuid() last. Note: If the caller is a super user, this will also set the effective group id.

## 戻り値

Returns TRUE on success or FALSE on failure.