Insert into database from android using PHP -

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i'm trying insert data android application database using php, tried below script error 

fail 3﹕ org.json.jsonexception: end of input @ character 0 of

php script 

 <?php         $servername = "";         $username = "";         $password = "";         $dbname = "";           // create connection         $conn = new mysqli($servername, $username, $password, $dbname);         // check connection          if ($conn->connect_error) {             die("connection failed: " . $conn->connect_error);         }          // insert values table         $name=$_request['name'];         $email=$_request['email'];         $message=$_request['message'];           $sql = "insert user_message (`nm_id_mes`, `nm_mail`, `nm_content`, `nm_datetime`, `nm_name`)                 values (null,$email,$message,now()+ interval 7 hour,$name)";          $flag['code']=0;          if ($conn->query($sql) === true) {             //echo "new record created successfully";             $flag['code']=1;         } else {             $flag[code']=0;         }         echo json_encode($flag);         $conn->close();         ?>

android part

@override     protected void doinbackground(void... params) {             namevaluepairs = new arraylist<namevaluepair>();             namevaluepairs.add(new basicnamevaluepair("name", contactusfragment.name));             namevaluepairs.add(new basicnamevaluepair("email", contactusfragment.email));             namevaluepairs.add(new basicnamevaluepair("message", contactusfragment.message));          log.d("name , email , message ",                 contactusfragment.name+"--- "+contactusfragment.email+"--- "+contactusfragment.message );         try {             httpclient httpclient = new defaulthttpclient();             httppost httppost = new httppost("http://example.com/message.php");         httppost.setentity(new urlencodedformentity(namevaluepairs));         httpresponse response = httpclient.execute(httppost);         httpentity entity = response.getentity();         = entity.getcontent();         log.e("pass 1", "connection success ");     } catch (exception e) {         log.e("fail 1", e.tostring());      }      try {         bufferedreader reader = new bufferedreader                 (new inputstreamreader(is, "iso-8859-1"), 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) {             log.d("inserted successfully", "");         } else {             log.d("sorry try again", "");         }     } catch (exception e) {         log.e("fail 3", e.tostring());     }      return null; }

you have got small error in php script

<?php     $servername = "";     $username = "";     $password = "";     $dbname = "";       // create connection     $conn = new mysqli($servername, $username, $password, $dbname);     // check connection      if ($conn->connect_error) {         die("connection failed: " . $conn->connect_error);     }      // insert values table     $name=$_request['name'];     $email=$_request['email'];     $message=$_request['message'];       $sql = "insert user_message (`nm_id_mes`, `nm_mail`, `nm_content`, `nm_datetime`, `nm_name`)             values (null,$email,$message,now()+ interval 7 hour,$name)";      $flag['code']=0;      if ($conn->query($sql) === true) {         //echo "new record created successfully";         $flag['code']=1;     } else {         //$flag[code']=0; !!!!!!!!!! error         $flag['code']=0;     }     echo json_encode($flag);     $conn->close();     ?>

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