I have this xml I'm wanting to pass to this web service function

<UserName>myuser</UserName> 
<Password>password</Password> 
<User>
    <AddCoverCode />
    <title>sdadasdsa</title>
</User>
</CreateNewUser>','',array(),'document', 'literal');

I'm using the soap extension buit in php5.

Is this what I'm supposed to be passing in the soapcall function as parameters?

array('CreateNewUser' => array(
    'UserName' =>  'sc', 
    'Password' =>  'i82372',
    'Registration' =>   array('username' =>'new','password' =>'ss'));