<?php
        $host='localhost';
        $uname='amodbina0106';
        $pwd='Amodbina200';
        $db="kezin_king";

        $con=mysqli_connect("localhost","amodbina0106","Amodbina200","kezin_king");
    if ($con->connect_error) {
        die("Connection failed: " . $con->connect_error);
    }
    echo "Connection Successful";


            $username = $_GET['username'];
            $password = $_GET['password'];
            $flag['code']=0;

            if($name == '' || $username == '' || $password == '' || $email == ''){
                echo 'please fill all values';
            }
            else{



        $sql=mysql_query("insert into sample values('$id','$name') ",$con);

        if(mysqli_query($con,$sql))

        {
            $flag['code']=1;
            echo"hi";
        }

        print(json_encode($flag));
        mysql_close($con);
        }
    ?>

**Output :-**
  [1]: http://kezinking.com/SampleConLogin

package com.example.nupur.phpdb_con;

    import android.content.Context;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    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 org.apache.http.HttpEntity;
    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.HttpGet;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.message.BasicNameValuePair;
    import org.json.JSONObject;

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import java.nio.Buffer;
    import java.util.ArrayList;
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;
    import java.io.BufferedReader;
    import java.io.InputStream;
    import java.io.InputStreamReader;



    public class MainActivity extends AppCompatActivity {
        EditText etUsername, etPassword;
        TextView txtView;
        Button btnLogin;
        String username;
        String password;
        InputStream is = null;
        String result = "";
        String line = null;
        int code;
        InputStream inputStream = null;
        BufferedReader reader;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            etUsername = (EditText) findViewById(R.id.etUsername);
            etPassword = (EditText) findViewById(R.id.etPassword);
            btnLogin = (Button) findViewById(R.id.btnLogin);
            txtView = (TextView) findViewById(R.id.txtView);
            btnLogin.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    username = etUsername.getText().toString();
                    password = etPassword.getText().toString();
                    insert();


                    // txtView.setText(etUsername.getText()+" "+etPassword.getText());


                }
            });


        }

        public String insert() {
            BufferedReader bufferedReader;

            ArrayList<NameValuePair> nameValuePairs = new ArrayList<>();
            nameValuePairs.add(new BasicNameValuePair("Username", username));
            nameValuePairs.add(new BasicNameValuePair("Password", password));
            try {

                // create HttpClient
                HttpClient httpclient = new DefaultHttpClient();

                // make GET request to the given URL
                HttpResponse httpResponse = httpclient.execute(new         HttpGet("http://kezinking.com/SampleConLogin"));

                // receive response as inputStream
                inputStream = httpResponse.getEntity().getContent();

                // convert inputstream to string
                if (inputStream != null) {
                    bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                    while ((line = bufferedReader.readLine()) != null)
                        result += line;

                    inputStream.close();
                    return result;
                } else
                    result = "Did not work!";

            } catch (Exception e) {
                Log.e("Fail 1", e.toString());
                Toast.makeText(getApplicationContext(), "Invalid IP Address",
                        Toast.LENGTH_LONG).show();
            }

            try {

                BufferedReader reader = new BufferedReader
                        (new InputStreamReader(is, "UTF-8"), 8);
                StringBuilder sb = new StringBuilder();
                while ((line = reader.readLine()) != null) {
                    sb.append(line + "n");
                }
                is.close();
                result = sb.toString();
                Log.e("pass 2", "connection success ");
            } catch (Exception e) {
                Log.e("Fail 2", e.toString());
            }
            try {
                JSONObject json_data = new JSONObject(result);
                code = (json_data.getInt("code"));
                if (code == 1) {
                    Toast.makeText(getBaseContext(), "Inserted Successfully",
                            Toast.LENGTH_SHORT).show();
                } else {
                    Toast.makeText(getBaseContext(), "Sorry, Try Again",
                            Toast.LENGTH_LONG).show();
                }
            } catch (Exception e) {
                Log.e("Fail 3", e.toString());

            }

            return null;
        }

       // @Override
        //public boolean onCreateOptionsMenu(Menu menu) {
          //  getMenuInflater().inflate(R.menu.activity_main, menu);
            //return true;
        //}

    }

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.nupur.phpdb_con.MainActivity">
<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
   <EditText
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
       android:ems="10"
       android:id="@+id/etUsername"
       android:layout_marginBottom="10px"

       android:hint="UserName"/>
</LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/etPassword"
        android:ems="10"
        android:layout_marginTop="100px"
        android:hint="Password" />
    </LinearLayout>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    <Button
        android:id="@+id/btnLogin"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="250px"
        android:gravity="center"
        android:text="@string/Login"
        android:layout_marginTop="400px"/>
    </LinearLayout>
    <TextView
        android:gravity="bottom"
        android:id="@+id/txtView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.nupur.phpdb_con">
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Error in Emulator:-
Invalid Ip Address




Thanks for helping me..(In Advance..)

<?php
        $host='localhost';
        $uname='amodbina0106';
        $pwd='Amodbina200';
        $db="kezin_king";
        $result = array();
        $con=mysqli_connect("localhost","amodbina0106","Amodbina200","kezin_king");
    if ($con->connect_error) {
   $result['status'] = false;
   $result['message'] = 'server lost';
        die(json_encode($result));
    }


            $username = $_GET['username'];
            $password = $_GET['password'];
            $flag['code']=0;

            if($name == '' || $username == '' || $password == '' || $email == ''){
                $result['status'] = false;
                  $result['message'] = 'All field required';
            }
            else{



        $sql=mysql_query("insert into sample values('$id','$name') ",$con);

        if(mysqli_query($con,$sql))

        {
            $flag['code']=1;
              $result['status'] = true;
                  $result['message'] = 'hi';
        }

        print(json_encode($result));
        mysql_close($con);
        }
    ?>

new insertData().execute(namevaluepair);

private class insertData extends AsyncTask<Arraylist<NameValuePair>, Void, String> { @Override
    protected String doInBackground(Arraylist<NameValuePair>... params) {
ArrayList<NameValuePair> namevaluepair=params[0];

//make http request here
    }}