Psecio\Gatekeeper\Gatekeeper::getConfig PHP Méthode

    public static function getConfig($index = null)
    {
        if ($index !== null) {
            return isset(self::$config[$index]) ? self::$config[$index] : null;
        } else {
            return self::$config;
        }
    }

<?php

use Pimple\Container;
require_once '../vendor/autoload.php';
// Custom autoloader
spl_autoload_register(function ($class) {
    $path = __DIR__ . '/lib/' . str_replace('\\', '/', $class) . '.php';
    if (is_file($path)) {
        require_once $path;
    }
});
session_start();
$app = new \Slim\Slim();
\Psecio\Gatekeeper\Gatekeeper::init('../');
$config = \Psecio\Gatekeeper\Gatekeeper::getConfig();
$app->config(array('view' => new \GatekeeperUI\View\TemplateView(), 'templates.path' => '../templates', 'debug' => true));
$app->contentType('text/html; charset=utf-8');
define('ACCEPT_JSON', strstr($app->request->headers->get('Accept'), 'application/json') !== false);
$view = $app->view();
$view->parserExtensions = array(new \Slim\Views\TwigExtension());
$view->parserOptions = array('debug' => true);
$di = new Container();
$di['db'] = function () {
    $dsn = 'mysql:host=' . $config['host'] . ';dbname=' . $config['name'] . ';charset=UTF8';
    return new \PDO($dsn, $config['username'], $config['password']);
};
$app->di = $di;