public function setGroup($group) {
		if ($this->isLink()) {
			return lchgrp($this->pathname, $group);
		} else {
			return chgrp($this->pathname, $group);
		}
	}
public function setGroup($group) {
		if ($this->isLink()) {
			return lchgrp($this->pathname, $group);
		} else {
			return chgrp($this->pathname, $group);
		}
	}
public function setGroup ( $ group ) { if ( $ this -> isLink ( ) ) { return lchgrp ( $ this -> pathname , $ group ) ; } else { return chgrp ( $ this -> pathname , $ group ) ; } }
Attempts to change the group.

Only the superuser may change the group arbitrarily; other users may
change the group of a file to any group of which that user is a member.

@param mixed $group A group name or number.
@return boolean Returns TRUE on success or FALSE on failure.
Attempts to change the group .