Android Studio uzak mysql bağlantısı

package com.mehmet_zerey_44outlook.linktlbot;

import android.os.Looper;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.InputType;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.message.BufferedHeader;
import org.apache.http.params.HttpConnectionParams;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    EditText ab,bc,cd;
    @Override
    protected **** onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ab = (EditText) findViewById(R.id.editText);
        bc = (EditText) findViewById(R.id.editText2);
        cd = (EditText) findViewById(R.id.editText3);
        Button buton = (Button)findViewById(R.id.button);
        buton.setOnClickListener(new View.OnClickListener() {
            @Override
            public **** onClick(View v) {
                gonder(ab.getText().toString(), bc.getText().toString(), cd.getText().toString());

            }
        });

    }

    public **** gonder(final String al,final String bl,final String cl) {
        Thread t = new Thread(){
            public **** run() {
                Looper.prepare();
                HttpClient client = new DefaultHttpClient();
                HttpConnectionParams.setConnectionTimeout(client.getParams(),5000);
                HttpResponse response;
                try {
                    HttpPost post = new HttpPost("http://parakayisi.com/yeni/kaydet.php");
                    List<NameValuePair> ekleneccekler = new ArrayList<NameValuePair>(2);

                    ekleneccekler.add(new BasicNameValuePair("ad", al));
                    ekleneccekler.add(new BasicNameValuePair("eposta", bl));
                    ekleneccekler.add(new BasicNameValuePair("metin", cl));

                    post.setEntity(new UrlEncodedFormEntity(ekleneccekler,"utf-8"));

                    String html = "";
                    response = client.execute(post);
                    if(response != null){
                        InputStream in = response.getEntity().getContent();
                        BufferedReader reader = new BufferedReader(new InputStreamReader(in));

                        StringBuilder sb = new StringBuilder();
                        String satirlar = null;
                        try {
                            while((satirlar = reader.readLine()) != null ){
                                sb.append(satirlar + "\n");
                            }
                        }catch (IOException e){
                            e.printStackTrace();
                        }finally {
                            try {
                                in.close();
                            }catch (IOException e){
                                e.printStackTrace();
                            }
                        }
                        html = sb.toString();

                        JSONArray parcala = new JSONArray(html);
                        if (parcala.length() > 0){
                            JSONObject obj = parcala.getJSONObject(0);

                            if(obj.getBoolean("islem") != true){
                                Toast.makeText(MainActivity.this,"Bir sorun oluştu ve form gönderilemedi.",Toast.LENGTH_SHORT).show();
                            }else {
                                Toast.makeText(MainActivity.this,"Form bize başarıyla ulaştı en yakın zamanda dönülecektir.",Toast.LENGTH_SHORT).show();
                            }
                        }
                    }


                }catch (Exception e){
                    Log.e("Try-catch hatası:","Hata"+ e);
                }
                Looper.loop();
            }
        };
        t.start();
    }

}

<?php
    if($_POST){
        // androiddden gelen verileri al ve değişkene aktar
        $ad = stripslashes($_POST["ad"]);
        $eposta = stripslashes($_POST["eposta"]);
        $metin = stripslashes($_POST["metin"]);

        // veritabanı bağlantısını oluştur
        try{
            $baglanti = new PDO("mysql:host=localhost;dbname=xxx;charset=utf8", "xxx", "xxx");
            $baglanti -> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        }catch(PDOException $e){
            print $e -> getMessage();
        }

        $gir = $baglanti -> prepare("INSERT INTO veriler SET ad = :a, eposta = :e, metin = :m, gonderilme = :g");
        $sql_giris = $gir -> execute(array("a" => $ad, "e" => $eposta, "m" => $metin, "g" => time()));

        if($sql_giris){
            $data[] = array(
                "islem" => true
            );
        }else{
            $data[] = array(
                "islem" => false
            );
        }

        // son hazırlanan veriyi json formatında ekrana bas.
        header("Content-type: application/json");
        echo json_encode($data);
    }
?>