php and informix blob

I am running PHP 4.2.3 with Informix Dynamic Server 2000 Version 9.20.HC. I
am trying to insert some text into a blob space and I get a -609 error.

here is a code snipit.

$textid = ifx_create_blob(0,0,$strText);

$blobidarray[] = $textid;

$db_query = "insert into assignment_info
(user,emp_ext,status,hardware_id,emp_assigned_id,d esc)
values('$strEmp_Name','$strEmp_Ext','1','$strSubCa tegory','0',?)";
$result = ifx_query($db_query, $connection, $blobidarray);
if (!$result)
{
echo ifx_errormsg();
}
else
{
ifx_free_result($result);
}

I don't what I am doing wrong. Either the php is bad or my creation of the
blob space and the column are bad.