public function postLogin(Request $request)
 {
     $flag = 0;
     $users = provider_regs::all();
     $input = Request::all();
     foreach ($users as $dbdata) {
         if ($dbdata->email == $input['email'] && $dbdata->pass == $input['password']) {
             $flag = 1;
             break;
         } else {
             $flag = 0;
         }
     }
     if ($flag) {
         //            View::addExtension('html', 'php');
         return redirect('display');
     } else {
         //            View::addExtension('html', 'php');
         return redirect('login')->withErrors(['email' => 'Please Register']);
         //                return redirect('login');
     }
 }