Android ส่ง parameter ที่เป็น ภาษาไทย ให้ PHP Web Services ไม่ได้

require_once("lib/nusoap.php");
		 
		//Create a new soap server
		$server = new soap_server();
		 
		//Define our namespace
		$namespace = "https://www.thaicreate.com/android/WebServiceServer3.php";
		$server->wsdl->schemaTargetNamespace = $namespace;
		 
		//Configure our WSDL
		$server->configureWSDL("HelloWorld");
		 
		// Register our method and argument parameters
        $varname = array(
                   'strName' => "xsd:string",
				   'strEmail' => "xsd:string"
        );
		$server->register('HelloWorld',$varname, array('return' => 'xsd:string'));
		 
		function HelloWorld($strName,$strEmail)
		{
			$arr["sName"] = "Sawatdee : ".$strName;
			$arr["sEmail"] = "Sawatdee : ".$strEmail;
			

		$strFileName = "2222.txt";
		$objFopen = fopen($strFileName, 'w');
		$strText1 = $strName."\r\n";
		fwrite($objFopen, $strText1);

			header('Content-type: application/json;charset=utf-8"');
			return json_encode($arr);
		}
		 
		// Get our posted data if the service is being consumed
		// otherwise leave this data blank.
		$POST_DATA = isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : '';
		 
		// pass our posted data (or nothing) to the soap service
		$server->service($POST_DATA);
		exit(); 

package com.example.testwebservice2;



import java.io.IOException;
import java.io.UnsupportedEncodingException;

import org.json.JSONException;
import org.json.JSONObject;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;

import android.os.Bundle;
import android.os.StrictMode;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.annotation.SuppressLint;
import android.app.Activity;

public class MainActivity extends Activity {
	
	private final String NAMESPACE = "https://www.thaicreate.com/android/WebServiceServer3.php";
    private final String URL = "http://x.x.x.x/nusoap/WebServiceServer3.php?wsdl"; // WSDL URL
    private final String SOAP_ACTION = "http://x.x.x.x/nusoap/WebServiceServer3.php/HelloWorld";
    private final String METHOD_NAME = "HelloWorld"; // Method on web service
    
	@SuppressLint("NewApi")
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		// Permission StrictMode
		if (android.os.Build.VERSION.SDK_INT > 9) {
			StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
					.permitAll().build();
			StrictMode.setThreadPolicy(policy);
		}

		// btnSend
		Button btnSend = (Button) this.findViewById(R.id.btnSend);
		btnSend.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				
				// txtName
				EditText txtName = (EditText) findViewById(R.id.txtName);
				// txtEmail
				EditText txtEmail = (EditText) findViewById(R.id.txtEmail);
				
				
				// txtResultName
				TextView txtResultName = (TextView) findViewById(R.id.txtResultName);
				// txtResultEmail
				TextView txtResultEmail = (TextView) findViewById(R.id.txtResultEmail);
				

				SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
				request.addProperty("strName", txtName.getText().toString());
				request.addProperty("strEmail",txtEmail.getText().toString());
				

				SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
						SoapEnvelope.VER11);

				envelope.setOutputSoapObject(request);
				

				HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
				try {
					//androidHttpTransport.getServiceConnection();
					androidHttpTransport.getServiceConnection().setRequestProperty("Content-Type", "text/xml;charset=utf-8");
					androidHttpTransport.call(SOAP_ACTION, envelope);
					SoapObject result = (SoapObject) envelope.bodyIn;
					
					txtResultName.setText(result.getProperty(0).toString());
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (XmlPullParserException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}


			}
		});

	}
	
    
}