accessing wsdl through PHP

[anusha.srs]

I am unable to call the wsdl function from the php. The wsdl has the interface concept pasting the snippets. Please help.

my wsdl snippet:

<s:complexType name="Credential">

<s:sequence/>

</s:complexType>

<s:complexType name="EnterpriseCredential">

<s:complexContent>

<s:extension base="s0:Credential">

<s:sequence/>

<s:attribute name="Login" type="s:string" use="required"/>

<s:attribute name="Password" type="s:string" use="optional"/>

<s:attribute name="Locale" type="s:string" use="optional"/>

<s:attribute name="TimeZone" type="s:string" use="optional"/>

<s:attribute name="Domain" type="s:string" use="optional"/>

<s:attribute name="AuthType" type="s:string" use="optional"/>

<s:attribute name="ReportedIPAddress" type="s:string" use="optional"/>

<s:attribute name="ReportedHostName" type="s:string" use="optional"/>

</s:extension>

</s:complexContent>

</s:complexType>

.

.

.

.

  <operation name="login">

<documentation>Log into the Web Services</documentation>

      <input message="s0:loginSoapIn">

    </input>

      <output message="s0:loginSoapOut">

    </output>

      <fault name="DSWSException" message="s0:DSWSException">

    </fault>

    </operation>

.

.

.

.

<s:element name="login">

<s:complexType>

<s:sequence>

<s:element name="credential" type="s0:Credential"/>

<s:element maxOccurs="1" minOccurs="0" name="version" type="s:string"/>

</s:sequence>

</s:complexType>

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What i understood with this wsdl is that the login operation takes an in parameter of credential object, how can i acheive the same in php.,.. any suggestions?