Can't read SOAP response results with PHP Client

[JackTheKnife]

I have response from the SOAP server

<CheckEWebUserResponse>
  <CheckEWebUserResult>
    <Results userName="xwebuser" recordReturn="1">
      <Result>
       <cst_key>5918ecf8-4b3e-4141-856d-d81e44e2ea7a</cst_key
       <eml_address>[email protected]</eml_address>
       <cst_name_cp>Adam Ra</cst_name_cp>
       <cst_member_flag>0</cst_member_flag>
       <cst_life_member_flag>0</cst_life_member_flag>
       <cst_id>000110</cst_id>
       <cst_receives_benefits_flag>0</cst_receives_benefits_flag>
       <ProductCode/><ProductName/><Membership/><MemberStatus/><MemberJoinDate/><MemberRejoinDate/><MemberRenewDate/><MemberExpireDate/><MemberTerminationDate/>
       <cst_web_force_password_change>1</cst_web_force_password_change>
       </Result>
       </Results>
  </CheckEWebUserResult>

And I have try to read CheckEWebUserResult using for an example:

$personality = $result->CheckEWebUserResult->cst_name_cp;

but $personality is empty. What is done wrong? Thanks