Set SAP RFC import table parameter using PHP multidimensional array

Question

I am trying to call a SAP RFC function which has import parameters as a table. Currently I am using SAP RFC for communication between SAP and PHP but it is not accepting table in import parameter.

It is giving following error for import parameter EX_ORDER_HEADER:

Can't find interface name EX_ORDER_HEADER, __cal_refresh_internal_buffer();