<?php

use Validator;
use IlluminateHttpRequest;

class MyController extends Controller {

    public function myFunction(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'foo' => 'required',
            'bar' => 'required'
        ]);

        if ($validator->passes()) {

        }

        if ($validator->fails()) {

        }
    }
}