(PHP 4, PHP 5)
chgrp — Changes file group
Attempts to change the group of the file filename to group .
Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user is a member.
Path to the file.
A group name or number.
Returns TRUE on success or FALSE on failure.
Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Note: When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script that is being executed.