how to use the new odbc functions?

Does anyone know how to use these new odbc functions? I could by try figure out how to use these functions... odbc_columns($id) gives back a ressource id containg all exististing columns present in the current db odbc_tables($id) like odbc_columns, lists tables odbc_gettypeinfo($id); gives back a ressource id containg all supported variable types but I would mainly be interested in odbc_primarykeys(..???) but I could not find out how to use it, it seems to need 4 parameters, the first one should be the connection_id, the last ones ? (in c code they´re names database, schema(??) and table Can anyone provide some infos? regards --

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