posix_setgid
PHP 4, PHP 5, PHP 7, PHP 8
posix_setgid - Set the GID of the current process
Manual
posix_setgid(
int$group_id ): bool
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.
Parameters
- group_id
-
The group id.
Return Values
Returns true on success or false on failure.