twig_template.php

<?php

use Twig\Environment;
use Twig\Loader\ArrayLoader;

function twig_template(string $template): callable
{
    $twigEnvironment = new Environment($loader = new ArrayLoader());
    $loader->setTemplate($templateName = md5($template), $template);

    return static function (array $params = []) use ($twigEnvironment, $templateName) {
        return $twigEnvironment->render($templateName, $params);
    };
}