PHP Slim Framework : Slim Application Error when using PDO - pdo

Question

I want to use PDO with my Slim php application. When I use a simple select query and send json data to Twig page. But I keep getting this error : Slim Application Error
This is my code :
<?php
require __DIR__ . '/vendor/autoload.php';
$app = new Slim\App;
$container = $app->getContainer();
$container['view'] = function ($container) {
$templates = __DIR__ . '/templates/';
$cache = __DIR__ . '/tmp/views/';
$view = new Slim\Views\Twig($templates, array('cache' => false));
return $view;
};
$container['db'] = function ($container) {
$pdo = new PDO("mysql:host=localhost;DBName=dbsat", "root", "");
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
return $pdo;
};
$app->get('/', function ($request, $response) {
$sth = $this->db->prepare("SELECT * from client where id=:id");
$sth->bindParam("id", 1);
$sth->execute();
$todos = json_encode($sth->fetchAll());
$data = ['user' => $todos];
return $this->view->render($response, 'home.twig', $data);
});
$app->get('/login', function ($request, $response) {
return $this->view->render($response, 'login.twig');
});
$app->run();
?>
The problem appears at this line :
$sth = $this->db->prepare("SELECT * from client where id=:id");

Answer 1

Problem solved. It was caused by binding param
Message: Cannot pass parameter 2 by reference
By knowing the error I have fixed it. Thank you all.