使用http post将位图上传到服务器android。 在PHP脚本中需要帮助

i am developing a android project i need to upload a bitmap on the apache server using a php script method i am using is as follows

public void doFileUpload(Bitmap bitmapOrg) {
        InputStream is;

        ByteArrayOutputStream bao = new ByteArrayOutputStream();

        bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);

        byte [] ba = bao.toByteArray();

        String ba1= Base64.encodeToString(ba, 0);
        ArrayList<NameValuePair> nameValuePairs = new ArrayList<>();

        nameValuePairs.add(new BasicNameValuePair("image",ba1));

        try{

            HttpClient httpclient = new DefaultHttpClient();

            HttpPost httppost = new

                    HttpPost("http://172.17.0.250/upload.php");

            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

            HttpResponse response = httpclient.execute(httppost);

            HttpEntity entity = response.getEntity();
            System.out.print(entity.toString());
            is = entity.getContent();

        }catch(Exception e){

            Log.e("log_tag", "Error in http connection " + e.toString());

        }

    }

and i donot know anything about php. i found this script for handling the file as follow.

<?php

$base=$_FILES['image'];

echo $base;

// base64 encoded utf-8 string

$binary=base64_decode($base);

// binary, utf-8 bytes

header('Content-Type: bitmap; charset=utf-8');

// print($binary);

//$theFile = base64_decode($image_data);

$file = fopen('test.jpg', 'wb');

fwrite($file, $binary);

fclose($file);

echo '<img src=test.jpg>';

?>

connection is getting established but i cant see any file in the /var/www/html/ directory. secondly i am not getting any message in the logcat. i dont know what to do. i am a newbie to android and dont know anything about php. i understand java and core concepts of c, bash.kindly help me with the php scipt.

edit 1

as per the comments i have changed the php script to

<?php

    $file_path = "uploads/";

    $file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
    if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {
        echo "success";
    } else{
        echo "fail";
    }
 ?>

and modified the method as

 HttpEntity entity = response.getEntity();

            is = entity.getContent();
            System.out.println(is.read());

it is showing 102 in the log cat