wddx_add_vars --
Add variables to a WDDX packet with the specified ID
Description
wddx_add_vars ( int packet_id, mixed name_var [, mixed ...])
wddx_add_vars() is used to serialize passed
variables and add the result to the packet specified by the
packet_id. The variables to be serialized
are specified in exactly the same way as
wddx_serialize_vars().