android - Register php script not returning response -

i have register form in android application, first made register/login page , worked fine.

just before wanted go live, checked , noticed when registered, i'm not returning loginscreen. checked logcat , showed me following error:

register response: fatal error: call undefined method mysqli_stmt::get_result() in /var/www/domain/app/android_login_api/include/db_functions.php on line 46

so checked php script , noticed giving error on $stmt->bind_result($email);

 /**  * storing new user  * returns user details  */ public function storeuser($name, $email, $password) {     $uuid = uniqid('', true);     $hash = $this->hashssha($password);     $encrypted_password = $hash["encrypted"]; // encrypted password     $salt = $hash["salt"]; // salt      $stmt = $this->conn->prepare("insert users(unique_id, name, email, encrypted_password, salt, created_at) values(?, ?, ?, ?, ?, now())");     $stmt->bind_param("sssss", $uuid, $name, $email, $encrypted_password, $salt);     $result = $stmt->execute();     $stmt->close();      // check successful store     if ($result) {         $stmt = $this->conn->prepare("select * users email = ?");         $stmt->bind_param("s", $email);         $stmt->execute();         $stmt->bind_result($email);         //$user = $stmt->get_result()->fetch_assoc();         $stmt->close();          return $user;     } else {         return false;     } } 

php ain't strongest side, i'm 100% worked 1 , half month ago. problem be?

fyi:

this location registration processed in application:

    private void registeruser(final string name, final string email,                           final string password) {     // tag used cancel request     string tag_string_req = "req_register";      pdialog.setmessage("registering ...");     showdialog();      stringrequest strreq = new stringrequest(method.post,             appconfig.url_register, new response.listener<string>() {          @override         public void onresponse(string response) {             log.d(tag, "register response: " + response.tostring());             hidedialog();              try {                 jsonobject jobj = new jsonobject(response);                 boolean error = jobj.getboolean("error");                 if (!error) {                     // user stored in mysql                     // store user in sqlite                     string uid = jobj.getstring("uid");                      jsonobject user = jobj.getjsonobject("user");                     string name = user.getstring("name");                     string email = user.getstring("email");                     string created_at = user.getstring("created_at");                      // inserting row in users table                     db.adduser(name, email, uid, created_at);                      toast.maketext(getapplicationcontext(), "registration succesfull", toast.length_long).show();                      // launch login activity                     intent intent = new intent(                             registeractivity.this,                             loginactivity.class);                     startactivity(intent);                     finish();