Description:
------------
In order to illustrate the problem, I use the test file http://svn.php.net/viewvc/php/php-src/trunk/ext/soap/tests/server021.phpt?revision=296679&view=co 

Then I changed with the code at http://pastebin.com/SV82M47K and it raised 2 warning and SoapServer::handle() returned no xml output.

The SoapServer::addSoapHeader must be called during the handle() execution. Then I had to inject the SoapServer instance inside the class used for SOAP servicing.

Please note that with this code http://pastebin.com/jL6c1rsK (no more __call magic method use, a public fixed method called "test") the result is as expected.

So, the SoapServer can't handle a SoapServer::addSoapHeader() call inside a class that has the magic method __call().



Test script:
---------------
Here is the code that doesn't work :
http://pastebin.com/SV82M47K

Here is a code example (send header on destruction) that works :
http://pastebin.com/ZKnp4vPP

Expected result:
----------------
The result should be as following (see the header content) :
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="answers" xmlns:ns2="http://testuri.org" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><SOAP-ENV:Header><ns1:everything>42</ns1:everything></SOAP-ENV:Header><SOAP-ENV:Body><ns2:testResponse><return xsi:type="xsd:string">Hello World</return></ns2:testResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>
ok


Actual result:
--------------
The result I obtained is :
ok

The SoapServer raises the 2 following warnings 
PHP Warning:  Invalid callback , no array or string given in index.php on line 34
PHP Warning:  SoapServer::handle(): Function '(null)' call failed in index.php on line 34