src/Plugin.php
static public function render($template, $userData)
    {
        if (!is_string($template)) return '';
        $path = strlen($template) <= 256 ? trim($template) : '';
        $data = array_merge(Tpl::$data, is_array($userData) ? $userData : []);
        $twig = TwigEnv::instance();

        // treat template as a path only if it *looks like* a Twig template path
        if (Str::startsWith($path, '@') || Str::endsWith(strtolower($path), '.twig')) {
            return $twig->renderPath($path, $data);
        }
        return $twig->renderString($template, $data);
    }
static public function render($template, $userData)
    {
        if (!is_string($template)) return '';
        $path = strlen($template) <= 256 ? trim($template) : '';
        $data = array_merge(Tpl::$data, is_array($userData) ? $userData : []);
        $twig = TwigEnv::instance();

        // treat template as a path only if it *looks like* a Twig template path
        if (Str::startsWith($path, '@') || Str::endsWith(strtolower($path), '.twig')) {
            return $twig->renderPath($path, $data);
        }
        return $twig->renderString($template, $data);
    }
Renders a Twig template string or template file
Can be used in Kirby controllers and PHP templates

* Example usage:

<?php echo twig('Hello {{ who }}', ['who'=>'World']) ?>
<?php echo twig('@snippets/header.twig', ['title'=>'Home page']) ?>

Note: in Twig templates, you should use the `include` tag or function instead.

@param string $template - path or template string to render
@param array  $userData - data to pass as variables to the template
@return string