(PECL radius >= 1.1.0)
Adds a server
bool radius_add_server ( resource $radius_handle, string $hostname, int $port, string $secret, int $timeout, int $max_tries )
radius_add_server() may be called multiple times, and it may be used together with radius_config(). At most 10 servers may be specified. When multiple servers are given, they are tried in round-robin fashion until a valid response is received, or until each serv