public function change_group($group)
    {

        if (empty($group) || !is_int($group)) return false;

        if (chgrp($this->path . $this->filename, $group)) {
            return $this->open($this->path . $this->filename);
        }

        return false;
    }
public function change_group($group)
    {

        if (empty($group) || !is_int($group)) return false;

        if (chgrp($this->path . $this->filename, $group)) {
            return $this->open($this->path . $this->filename);
        }

        return false;
    }
public function change_group ( $ group ) { if ( empty ( $ group ) || ! is_int ( $ group ) ) return false ; if ( chgrp ( $ this -> path . $ this -> filename , $ group ) ) { return $ this -> open ( $ this -> path . $ this -> filename ) ; } return false ; }
changes the group

@param $group int

@return bool
changes the group