Calling Oracle Custom web Service From PHP

I am trying to call oracle consuming web service in php code igniter. In my oracle package, there is procedure. In which, I passed 2 parameters. 1st is number type and 2nd is Nested table. When i try to execute it, it gives me error like,

<span class="pln"></span><span class="str"><strong>"Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing Schema: **element has both</strong><br/><strong>  'type' attribute and subtype</strong></span>

Procedure :

CREATE OR REPLACE PACKAGE ORACLE_PKG_R AUTHID CURRENT_USER AS

     TYPE POSPLIT IS TABLE OF VARCHAR2(2000) INDEX BY BINARY_INTEGER;

     FUNCTION ACCEPTANCE(HEADER_ID IN VARCHAR2,P_NOTE IN VARCHAR2) RETURN NUMBER;