PHP: How to bind complex CollectionType-Object to Oracle -

i've got problem bind complex nested table-type php.

my oracle types:

create or replace type my.ot_my_status object (   id_nk number,   status char(1) );  create or replace type my.ct_my_status table of ot_my_status; 

and tried bind parameter type in php 5.5:

$coll = oci_new_collection($conn, "ct_my_status", "my");  //sampledata     $data = new array();  $oneentry = new object(); $oneentry->id_nk = 12345; $oneentry->status = "1"; $data[] = $oneentry; //***********  $coll->append($data); //here crashes :-(  oci_bind_by_name ( $stmt, ":coll", $coll, -1, oci_b_nty); 

i can't append object-array collection.

oci-collection::append() expects parameter 1 string, object given 

any ideas?

ase said here: http://php.net/manual/en/oci-collection.append.php

"the value added collection. can string or number."