try { $template = $engine->load('mytemplate.html'); echo $template->render($data); } catch (\Exception $e) { $engine->javascript_senderror("Template rendering error: " . $e->getMessage()); }
if(!isset($_SESSION['user'])) { try { $template = $engine->load('login.html'); echo $template->render(); } catch (\Exception $e) { $engine->javascript_senderror("Template rendering error: " . $e->getMessage()); } } else { //Show user profile }In this example, the session variable `$_SESSION['user']` is checked to determine if the user is logged in. If the user is not logged in, the login template is rendered using the template engine. If an error occurs during this process, `javascript_senderror` method will be called to send an error response. If the user is logged in, the user profile page will be shown. The PHP template engine package that contains the `javascript_senderror` method is not specified in these examples as it depends on the particular package or library being used.