Controller

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Validator;
use App\User;


class IndexController extends Controller
{

     /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function __construct()
    {
         $this->middleware('guest');

    }

    public function index()
    {
        return view('index');
    }


    public function checklogin(Request $request)
    {
        $this->validate($request, [
            'email'             =>     'required|email',
            'password'          =>     'required',



        ]);
        $user_data = array(
            'email'         =>      $request->input('email'),
            'password'      =>      $request->input('password'),

        );

        // if(Auth::attempt($user_data))
        // {

        //     return redirect('dashboard/index')->with('success', 'Successful login, Welcome dear '.Auth::user()->name.'.');
        // }
        //     else
        //         {

        //             return redirect()->route('index')->with('error', 'Your email or password is incorrect.');
        //         }

        $code = $request->input('CaptchaCode');
            $isHuman = captcha_validate($code);

            if ($isHuman) {
                if(Auth::attempt($user_data))
                {

                    return redirect('dashboard/index')->with('success', 'Successful login, Welcome dear '.Auth::user()->name.'.');
                }
                    else
                        {

                            return redirect()->route('index')->with('error', 'Your email or password is incorrect.');
                        }
            }

            else {
                return redirect()->route('index')->with('error', 'Invalid Captcha, Please try again.');
            }


    }

}