@php

    $val['photo_name'] = $_GET['namenew'];
    DB::table('photo')->where('photo_name',$_GET['nameold'])->update($val);

@endphp

<script>
    // your "Imaginary javascript"
     //window.location.href = '{{url("yoururl")}}';
    // or
    window.location.href = '{{route("home")}}'; //using a named route
</script>