PHP_REDIS_API void
generic_mset_old(INTERNAL_FUNCTION_PARAMETERS, char *kw, ResultCallback fun) {
    zval *object;
    RedisSock *redis_sock;

    char *cmd = NULL, *p = NULL;
    int cmd_len = 0, argc = 0, kw_len = strlen(kw);
    int step = 0;    // 0: compute size; 1: copy strings.
    zval *z_array;

    HashTable *keytable;

    if (zend_parse_method_parameters(ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "Oa",
                                     &object, redis_ce, &z_array) == FAILURE)
    {
        RETURN_FALSE;
    }

    if ((redis_sock = redis_sock_get(object TSRMLS_CC, 0)) == NULL) {
        RETURN_FALSE;
    }

    if(zend_hash_num_elements(Z_ARRVAL_P(z_array)) == 0) {
        RETURN_FALSE;
    }

    for(step = 0; step < 2; ++step) {
        if(step == 1) {
            /* '*' + arg count + NL */
            cmd_len += 1 + integer_length(1 + 2 * argc) + 2;
            /* '$' + strlen(kw) + NL */
            cmd_len += 1 + integer_length(kw_len) + 2;
            /* kw + NL */
            cmd_len += kw_len + 2;

            p = cmd = emalloc(cmd_len + 1);
            p += sprintf(cmd, "*%d" _NL "$%d" _NL "%s" _NL, 1 + 2 * argc,
                kw_len, kw);
        }

        ulong idx;
        zend_string *zkey;
        zval *z_value_p;
        keytable = Z_ARRVAL_P(z_array);
        ZEND_HASH_FOREACH_KEY_VAL(keytable, idx, zkey, z_value_p) {
            char *key, *val;
            strlen_t key_len;
            strlen_t val_len;
            int val_free, key_free;
            char buf[32];

            if (zkey) {
                key = zkey->val;
                key_len = zkey->len;
            } else {
                // Create string representation of our index
                key_len = snprintf(buf, sizeof(buf), "%ld", (long)idx);
                key = (char*)buf;
            }

            if(step == 0)
                argc++; /* found a valid arg */

            val_free = redis_serialize(redis_sock, z_value_p, &val, &val_len
                TSRMLS_CC);
            key_free = redis_key_prefix(redis_sock, &key, &key_len);

            if(step == 0) { /* counting */
                cmd_len += 1 + integer_length(key_len) + 2
                        + key_len + 2
                        + 1 + integer_length(val_len) + 2
                        + val_len + 2;
            } else {
                p += sprintf(p, "$%d" _NL, key_len);    /* key len */
                memcpy(p, key, key_len); p += key_len;    /* key */
                memcpy(p, _NL, 2); p += 2;

                p += sprintf(p, "$%d" _NL, val_len);    /* val len */
                memcpy(p, val, val_len); p += val_len;    /* val */
                memcpy(p, _NL, 2); p += 2;
            }

            if (val_free) efree(val);
            if (key_free) efree(key);
        } ZEND_HASH_FOREACH_END();
    }

    REDIS_PROCESS_REQUEST(redis_sock, cmd, cmd_len);

    IF_ATOMIC() {
        fun(INTERNAL_FUNCTION_PARAM_PASSTHRU, redis_sock, NULL, NULL);
    }
    REDIS_PROCESS_RESPONSE(fun);
}