www/resources/view.php
<?php

require_once __DIR__ . '/../../vendor/autoload.php';

use Illuminate\Container\Container;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Events\Dispatcher;
use Illuminate\Filesystem\Filesystem;
use Illuminate\Support\Facades\Blade;
use Illuminate\Support\Facades\Facade;
use Illuminate\Support\Facades\View;
use Illuminate\View\Compilers\BladeCompiler;
use Illuminate\View\Engines\CompilerEngine;
use Illuminate\View\Engines\EngineResolver;
use Illuminate\View\Engines\PhpEngine;
use Illuminate\View\Factory;
use Illuminate\View\FileViewFinder;

// inspiration: https://github.com/mattstauffer/Torch/blob/master/components/view/index.php

class App extends Container
{
    public function getNamespace(): string
    {
        return 'WebPageTest\\';
    }
}

function view($tmpl, $vars)
{
    static $viewFactory;
    if (is_null($viewFactory)) {
        // Configuration
        $pathsToTemplates = [realpath(__DIR__ . '/views')];
        $pathToCompiledTemplates = realpath(__DIR__ . '/compiled');

        // Dependencies
        $container = App::getInstance();
        $container->instance(Application::class, $container);

        $filesystem = new Filesystem();
        $eventDispatcher = new Dispatcher($container);

        // Create View Factory capable of rendering PHP and Blade templates
        $viewResolver = new EngineResolver();
        $bladeCompiler = new BladeCompiler($filesystem, $pathToCompiledTemplates);

        $viewResolver->register('blade', function () use ($bladeCompiler) {
            return new CompilerEngine($bladeCompiler);
        });

        $viewResolver->register('php', function () use ($filesystem) {
            return new PhpEngine($filesystem);
        });

        $viewFinder = new FileViewFinder($filesystem, $pathsToTemplates);
        $viewFactory = new Factory($viewResolver, $viewFinder, $eventDispatcher);
        $viewFactory->setContainer($container);
        Facade::setFacadeApplication($container);
        $container->instance(\Illuminate\Contracts\View\Factory::class, $viewFactory);
        $container->alias(
            \Illuminate\Contracts\View\Factory::class,
            (new class extends View
            {
                public static function getFacadeAccessor()
                {
                    return parent::getFacadeAccessor();
                }
            })::getFacadeAccessor()
        );
        $container->instance(BladeCompiler::class, $bladeCompiler);
        $container->alias(
            BladeCompiler::class,
            (new class extends Blade
            {
                public static function getFacadeAccessor()
                {
                    return parent::getFacadeAccessor();
                }
            })::getFacadeAccessor()
        );
    }
    return $viewFactory->make($tmpl, $vars)->render();
}
