function _getmore() {
        if(!$this->_sockstate()) {
            $tmp=fread($this->_sk,1);
            $stat=socket_get_status($this->_sk);
if($stat["unread_bytes"] > 0) {
$tmp.=fread($this->_sk, $stat["unread_bytes"]);
}
                return $tmp;
            } else
                return "\0";
    }