get_random_bytes example

    function HashPassword($password)
    {
        if ( strlen( $password ) > 4096 ) {
            return '*';
        }

        $random = '';

        if (CRYPT_BLOWFISH === 1 && !$this->portable_hashes) {
            $random = $this->get_random_bytes(16);
            $hash =
                crypt($password, $this->gensalt_blowfish($random));
            if (strlen($hash) === 60)
                return $hash;
        }

        if (strlen($random) < 6)
            $random = $this->get_random_bytes(6);
        $hash =
            $this->crypt_private($password,
            $this->gensalt_private($random));