oracle complex type and oci_new_collection

Is it possible to use a complex collection in PHP as shown below? Oci_new_collection is successful, but the OCI-Collection->getElem(i) returns false for each record returned. If we change from a complex type to a simple type, the data returns as expected. ----------------------------------------------------------------------------------------------------------------------------- -- COMPLEX TYPE ----------------------------------------------------------------------------------------------------------------------------- create or replace type aud_cl_clu_row as object ( channel_line_up varchar2(50), audit_status varchar2(20) ); create or replace type aud_cl_clu_tbl is table of aud_cl_clu_row; ----------------------------------------------------------------------------------------------------------------------------- -- SIMPLE TYPE ----------------------------------------------------------------------------------------------------------------------------- create or replace type aud_cl_clu_tbl is table of varchar2(50);