Undefined offset: 0 using laravel5.2

{ foreach(array_except($Request->toArray(),['_token','submit']) as $kay=> $Req){

$siteSettingUpdate=$siteSetting->where('namesetting',$kay)->get()[0];

$siteSettingUpdate->fill(['value'=>$Req])->save() ;

} return Redirect::back()->withFlashMesage('Updated');//Back to the same Page;

}

via Chebli Mohamed