twig template engine?

Question

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Hello, why does the Twig templating engine output the template name and not its content?

require_once 'vendor/autoload.php';
 Twig_Autoloader::register();

 $view = $_SESSION['view'];
 $loader = new Twig_Loader_String("templates/$view");
 $twig = new Twig_Environment($loader, array(
    'cache'       => 'templates/_GlobalCache',
    'auto_reload' => true
 ));

 echo $twig->render('index.php', array(
  'user' => $_SESSION['ref']
 ));

Answer 1

Try this option here.
www.masterskayafanstranic.com.ua/kak-izmenit-nazva...

Answer 2

Because Twig_Loader_String takes a string as a template. NOT the NAME of the template, but the contents of the template. Those. for Twig_Loader_String to work, you need to do something like this
UPD: You should probably use something like this