Random password Generator Function : PHP

            function random_password($length = 8) {
                $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()_-=+;:,.?";
                $password = substr(str_shuffle($chars), 0, $length);
                return $password;
            }