Description:
------------
When using WSI Basic compliant wsdl, a call to functions without parameters return procedure xxx not found despite the fact that the function exist(they exist both in the wsdl and in the array returned by SoapServer::getFunctions()).
Functions with parameters are being executed correctly.

For example:
A Soap call to : firstFunctionWithoutParam() 
return the following SoapFault:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Body>
  <SOAP-ENV:Fault>
     <faultcode>SOAP-ENV:Server</faultcode>
        <faultstring>Procedure 'firstFunctionWithoutParam' not present
    </faultstring>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

despite the fact that the function exist in the return SoapServer::getFunctions()
Array
(
    [0] => firstFunctionWithoutParam
    [1] => secondFunctionWithoutParam
    [2] => firstFunctionClassParam
    [3] => secondFunctionClassParam
)

Soap Data (from $HTTP_RAW_POST_DATA):
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Body>
  <firstFunctionWithoutParam/>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Soap data for Soap call with parameters:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
  <SOAP-ENV:Body>
    <firstFunctionClassParam>
        <param>oren</param>
        <vectparam>one</vectparam>
        <vectparam>two</vectparam>
     </firstFunctionClassParam>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Thanks for your help

Reproduce code:
---------------
A zip file file SoapClient\Server can be found in following link
http://myfreefilehosting.com/f/bf039ff168_0.1MB