web/public/simulator.php

<?php
$app = require '../app/inc.php';

if ($_SERVER['REQUEST_METHOD'] === 'POST')
{
    if (!isset($_POST['cardnumber']) || empty($_POST['cardnumber']))
    {
        $app->session->flash('Kortnummer kan ikke være tom!', 'danger');
    } else {
        $model = $app->model('Simulator');

        if ($model->insert($_POST['cardnumber']))
        {
            $app->session->flash("Lag funnet for \"{$_POST['cardnumber']}\"", "success");
        } else {
            $app->session->flash("Opprettet lag for \"{$_POST['cardnumber']}\"");
        }
    }
}

$app->view('template/header', ['title' => 'Simulator']);
$app->view('simulator');
$app->view('template/footer');