JSON works on localhost but not on server -mysqlndrivers are updated - php

Question

I am creating a web service for android and PHP registration process.
I am following this tutorial http://www.androidhive.info/2012/01/android-login-and-registration-with-php-mysql-and-sqlite/
The Issue is: My JSON works on localhost but not on a server. On a server it gives me this error but it stores the data on database successfully.
Fatal error: Call to undefined method mysqli_stmt::get_result() in /home/pmc/public_html/zeusonline.me/zeus/include/DB_Functions.php on line 45
and the line 45 is:
$user = $stmt->get_result()->fetch_assoc();
Code samples->
Register.php file
<?php
require_once 'include/DB_Functions.php';
$db = new DB_Functions();
// json response array
$response = array("status" => TRUE);
if (isset($_GET['username']) && isset($_GET['email']) &&
isset($_GET['country']) && isset($_GET['phone_number']) &&
isset($_GET['password']) && isset($_GET['lat']) && isset($_GET['lon'])) {
// receiving the post params
$username = $_GET['username'];
$email = $_GET['email'];
$country = $_GET['country'];
$phone_number = $_GET['phone_number'];
$password = $_GET['password'];
$lat = $_GET['lat'];
$lon = $_GET['lon'];
// check if user is already existed with the same email
if ($db->isUserExisted($email)) {
// user already existed
$response["status"] = FALSE;
$response["error_msg"] = "User already existed with " . $email;
echo json_encode($response);
}
else if ($db->isUserExisted($phone_number)) {
// user already existed
$response["status"] = FALSE;
$response["error_msg"] = "User already existed with " . $phone_number;
echo json_encode($response);
}
else {
// create a new user
$user = $db->storeUser($username, $email, $country , $phone_number,
$password, $lat, $lon);
if ($user) {
// user stored successfully
$response["status"] = TRUE;
$response["user"]["uid"] = $user["unique_id"];
$response["user"]["username"] = $user["username"];
$response["user"]["email"] = $user["email"];
$response["user"]["country"] = $user["country"];
$response["user"]["phone_number"] = $user["phone_number"];
$response["user"]["country"] = $user["country"];
$response["user"]["height"] = $user["height"];
$response["user"]["weight"] = $user["weight"];
$response["user"]["is_number_verified"] =
$user["is_number_verified"];
$response["user"]["is_safe"] = $user["is_safe"];
$response["user"]["is_login"] = $user["is_login"];
$response["user"]["lat"] = $user["lat"];
$response["user"]["lon"] = $user["lon"];
$response["user"]["created_at"] = $user["created_at"];
echo json_encode($response);
} else {
// user failed to store
$response["Status"] = False;
$response["error_msg"] = "Unknown error occurred in registration!";
echo json_encode($response);
}
}
} else {
$response["Status"] = TRUE;
$response["error_msg"] = "Required parameters are missing!";
echo json_encode($response);
}
?>
DB_Functions.php file
<?php
class DB_Functions {
private $conn;
// constructor
function __construct() {
require_once 'DB_Connect.php';
// connecting to database
$db = new Db_Connect();
$this->conn = $db->connect();
}
// destructor
function __destruct() {
}
/**
* Storing new user
* returns user details
*/
public function storeUser($username, $email, $country, $phone_number,
$password, $lat, $lon) {
$uuid = uniqid('', true);
$height = 0;
$weight = 0;
$is_number_verified = False;
$is_safe = True;
$is_login = False;
$hash = $this->hashSSHA($password);
$encrypted_password = $hash["encrypted"]; // encrypted password
$salt = $hash["salt"]; // salt
$stmt = $this->conn->prepare("INSERT INTO users (unique_id, username,
email, country, phone_number, password, salt, height, weight,
is_number_verified, is_safe, is_login, lat, lon, created_at) VALUES(?, ?, ?,
?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,NOW())");
$stmt->bind_param("ssssssssssssss", $uuid, $username, $email, $country,
$phone_number, $encrypted_password, $salt, $height, $weight,
$is_number_verified, $is_safe, $is_login, $lat, $lon);
$result = $stmt->execute();
$stmt->close();
// check for successful store
if ($result) {
$stmt = $this->conn->prepare("SELECT * FROM users WHERE phone_number
= ?");
$stmt->bind_param("s", $phone_number);
$stmt->execute();
$user = $stmt->get_result()->fetch_assoc();
$stmt->close();
return $user;
} else {
return false;
}
}
}
?>
The URL for testing :
http://pakmanzil.com/zeusonline.me/zeus/register.php?username=bilal&email=bi#gmail.com&country=england&phone_number=03333524145&password=123&lat=0.0&lon=0.0
Change the email and phone_number to make it works please :)