Php calls the webservice interface, garbled characters, and errors

Php calls the webservice interface. garbled characters and error messages & lt ;? $ Client & nbsp ;=& nbsp; new & nbsp; SoapClient ('http: // www.webxml.com.cn/WebServices/TraditionalSimplifiedWebService.asmx? Ws php calls webservice interface, garbled code and Error Reporting
$ Client = new SoapClient ('http: // www.webxml.com.cn/WebServices/TraditionalSimplifiedWebService.asmx? Wsdl ');
$ Client-> soap_defencoding = 'utf-8 ';
$ Client-> decode_utf8 = false;
$ Obj = $ client-> toTraditionalChinese (array ('stext '=> '));
Print_r ($ obj );
?>
This is a webservice code that I wrote to call the web Public simple conversion, I have specified soap_defencoding as the UTF-8, decode_utf8 is set to false, but after the execution of the prompt [Encoding: string '\ xb8... 'is not a valid UTF-8 string]

Please help us to see how to deal with this:
------ Solution --------------------
Encoding: string '\ xb8...' is not a valid UTF-8 string
The passed parameter is not a UTF-8 string

That is to say, your array ('stext '=>' is not UTF-8
That is to say, your program file is not UTF-8
However, if it is UTF-8, why should we declare the character set?


In addition
$ Client-> soap_defencoding = 'utf-8 ';
$ Client-> decode_utf8 = false;
Is the method of nusoap