Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc.

If possible, make the script source available online and provide
an URL to it here. Try to avoid embedding huge scripts into the report.

[server]
theServerClass {
 function __construct() { }
 function set($in) {
  return array('code'=>'€€€');
 }
}
$server = new SoapServer('a.wsdl',array('encoding'=>'ISO-8859-1'));
$server->setClass('theServerClass');
$server->handle();

[client]
$cli = new SoapClient('a.wsdl', array('encoding'=>'ISO-8859-1','soap_version'=> SOAP_1_2, 'trace'=> 1));
$result = $cli->set('somthing');
print_r($cli->__getLastResponse());

...
xml-Response: <?xml version="1.0" encoding="UTF-8"?> 
but IS ISO-8859-1

set encoding to utf-8 the "€" will throw a SoapFault.

And where can I find the a.wsdl ?

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

I have the same problem in 5.1.4 on a CentOS server.

You can use this WSDL for testing: 
http://webservices.iptelefoni.no/?class=OrderManager&wsdl

The output from __getLastRequest outputs that it requests 
encoding in UTF-8.

Even when I PEAR's Soap Client (which _do_ send the correct 
encoding) the PHP 5.1.4 SoapServer returns the XML in utf8 
encoding.

Both server and client has been set the option for encoding 
to ISO-8859-1.

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

The utf-8 is hard coded in soap.c so it's not even configurable.

[andy@ddcctdev02 soap]$ grep -n utf *.c
php_encoding.c:763:                     soap_error1(E_ERROR,  "Encoding: string '%s' is not a valid utf-8 string", str);
php_encoding.c:768:             soap_error1(E_ERROR,  "Encoding: string '%s' is not a valid utf-8 string", str);
php_http.c:443:                 smart_str_append_const(&soap_headers,"Content-Type: application/soap+xml; charset=utf-8");
php_http.c:451:                 smart_str_append_const(&soap_headers,"Content-Type: text/xml; charset=utf-8\r\n");
soap.c:1444:                    sapi_add_header("Content-Type: text/xml; charset=utf-8", sizeof("Content-Type: text/xml; charset=utf-8")-1, 1);
soap.c:1460:                    sapi_add_header("Content-Type: text/xml; charset=utf-8", sizeof("Content-Type: text/xml; charset=utf-8"), 1);
soap.c:1859:                    sapi_add_header("Content-Type: application/soap+xml; charset=utf-8", sizeof("Content-Type: application/soap+xml; charset=utf-8")-1, 1);
soap.c:1861:                    sapi_add_header("Content-Type: text/xml; charset=utf-8", sizeof("Content-Type: text/xml; charset=utf-8")-1, 1);
soap.c:1988:            sapi_add_header("Content-Type: application/soap+xml; charset=utf-8", sizeof("Content-Type: application/soap+xml; charset=utf-8")-1, 1);
soap.c:1990:            sapi_add_header("Content-Type: text/xml; charset=utf-8", sizeof("Content-Type: text/xml; charset=utf-8")-1, 1);

This is causing me major problems with 5.1.2 but it's still like that in 5.2.0

Additionally, I'm having problems with the Content-type being set like so:
Content-Type: application/soap+xml; charset=UTF-8; action="urn:LAS_PROVTRANS/GetListOperation"

The SOAP Server that I'm using (Remedy Mid-Tier) doesn't like that string and thinks that the encoding is being set to 'UTF-8; action="urn:LAS_PROVTRANS/GetListOperation" which it doesn't like at all.

Maybe it's a matter of putting quotes around the UTF-8 piece?  I got it to send the UTF-8 in capitals by manually editing the shared library to see if that would fix it.

I am also get the same problem that the server request information is flow this:

SOAP-ENV:ServerSOAP-ERROR: Encoding: string '\xb4...' is not a valid utf-8 string

ps:I have used the non-WSDL plz help me thk a lot!