Laravel's JSON return is asynchronous?

I have an API in Laravel, with a show(id) method that returns a response->json($array) . Within this function I have a foreach , my problem is in response , which does not wait for the foreach to finish and then return the json. This is causing a lack of data in the view.

Is Laravel asynchronous?

My function of the API is like this

use ...

Class ProcessesController ()
{

   public function show($id){

    $db = DB::connection('pgsql'); 

    //$id = nrprocesso
    $process = $db->table('processo')->where('nrprocesso',$id)
      ->join('viatransporte', 'viatransporte.idviatransporte', '=', 'processo.idviatransporte')
      ->select('processo.*','viatransporte.nmviatransporte')
      ->get();  

    //Esse processo não existe
    if (!$process) {
        return response()-> json([
           'message' => 'Record not found process' // Esse processo não existe
        ], 404);
    }

    $idprocesso = $process[0]->idprocesso;
    $idusuario = $process[0]->idusuario;
    $idpessoacliente = $process[0]->idpessoacliente;

    $events = $db->table('followupprocesso')->where('followupprocesso.idprocesso',$idprocesso)
      ->join('eventos', 'eventos.idevento', '=', 'followupprocesso.idevento')
      ->select('eventos.idevento', 'eventos.nmevento', 'followupprocesso.dtprevisao', 'followupprocesso.dtrealizacao', 'followupprocesso.dtprevisaoinicial', 'followupprocesso.observacao')
      ->get();

    $dicapa = $db->table('dicapa')->where('idprocesso',$idprocesso)
      ->join('pessoa', 'pessoa.idpessoa', '=', 'dicapa.idpessoaexportadorrepasse')
      ->select('dicapa.dtregistrodi', 'dicapa.nrdeclaracaoimportacao', 'pessoa.nmpessoa')
      ->get();

    $user = $db->table('usuario')->select('nmusuario')->where('idusuario',$idusuario)->get();

    $client = $db->table('pessoa')->select('nmpessoa')->where('idpessoa',$idpessoacliente)->get();

   //Alterando key do array events para o nº do evento

   foreach($events as $key => $value) {

       $new_key = $value->idevento;  
       unset($events[$key]);     
       $events[$new_key] = $value;
   }

 //    for($i = 0; $i < count($events); $i ++ ){

//           $value = $events[$i];
//           $new_key = $events[$i]->idevento;  
//           unset($events[$i]);
//           $events[$new_key] = $value;

//    }

    //Retornando resultado das consultas
    $processget = [    
       "remotedb" => [
          "process" => $process[0],
          "events" => $events,
          "contarray" => count($events),
          "di" => $dicapa,
          "user" => $user,
          "client" => $client,
       ],
       "localdb" => []
    ];

    return response()->json($processget);
 }
}

The response is not waiting for foreach to finish the loop and then return the JSON.