Move everything to src/ and use lowercase dir names

.phpstan.neon

@@ -1,7 +1,6 @@
 parameters:
 	level: 8
 	excludePaths:
-		- Backend/Libraries/vendor/*
+		- vendor/*
 	paths:
-		- index.php
-		- Backend
+		- src

.vscode/settings.json

@@ -4,7 +4,7 @@
 	"editor.useTabStops": true,
 	"files.insertFinalNewline": true,
 	"files.trimTrailingWhitespace": true,
-	"phpstan.binPath": "Backend/Libraries/vendor/bin/phpstan",
+	"phpstan.binPath": "vendor/bin/phpstan",
 	"phpstan.configFile": ".phpstan.neon",
 	"phpstan.enabled": true,
 }

Backend/Controllers/SecondHome.php → src/controllers/ArticleController.php

@@ -1,6 +1,6 @@
 <?php
 
-class SecondHome extends Controller
+class ArticleController extends Controller
 {
 	protected array $paths = ['/article/:id'];
 

Backend/Core/ClassLoader.php → src/core/ClassLoader.php

@@ -18,7 +18,7 @@ class ClassLoader
 	 */
 	public static function 파람(): void
 	{
-		$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator(__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'Backend'), RecursiveIteratorIterator::SELF_FIRST);
+		$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator(__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'src'), RecursiveIteratorIterator::SELF_FIRST);
 		foreach ($files as $file)
 			if (pathinfo($file->getFileName(), PATHINFO_EXTENSION) == 'php' && !str_contains($file->getPathname(), 'vendor'))
 				self::$classes[strval(str_replace('.php', '', $file->getFileName()))] = $file->getPathname();
@@ -37,7 +37,7 @@ public static function 파람(): void
 	private static function initControllers(): void
 	{
 		foreach (self::$classes as $name => $path) {
-			if (str_contains(str_replace('\\', '/', $path), '/Controllers/')) {		// Replace \ with / for windows users
+			if (str_contains(str_replace('\\', '/', $path), '/controllers/')) {		// Replace \ with / for windows users
 				$controller = new $name();
 				if ($controller instanceof Controller)
 					$controller->initRoutes();

Backend/Core/System/Controller.php → src/core/system/Controller.php

@@ -71,7 +71,7 @@ abstract protected function execute(): View;
 	 */
 	protected function param(string $var): ?string
 	{
-		if (isset($this->params[$var]) && is_string($this->params[$var]))
+		if (isset($this->params[$var]))
 			return htmlspecialchars(urldecode(strval($this->params[$var])));
 		return null;
 	}

Backend/Core/System/View.php → src/core/system/View.php

@@ -27,6 +27,29 @@ public function addChild(View $child): View
 		return $this;
 	}
 
+	/**
+	 * Add multiple children
+	 *
+	 * @param View ...$children Children
+	 * @return View Current view
+	 */
+	public function addChildren(View ...$children): View
+	{
+		$this->children = array_merge($this->children, $children);
+		return $this;
+	}
+
+	/**
+	 * Get all children
+	 *
+	 * @return array<View> Children
+	 * @see View::$children
+	 */
+	public function getChildren(): array
+	{
+		return $this->children;
+	}
+
 	/**
 	 * Render children
 	 */
@@ -41,7 +64,7 @@ public function renderChildren(?string $element = null): void
 	}
 
 	/**
-	 * Get rendered HTML as string
+	 * Get rendered (HTML) View as string
 	 */
 	public function __toString(): string
 	{

index.php → src/index.php

@@ -25,8 +25,8 @@
 const TITLE = 'sample';													// Title of project
 
 // Require autoloaders
-require_once('./Backend/Core/ClassLoader.php');	// Load classes
-require_once('./vendor/autoload.php');						// Composer autoloader
+require_once('./core/ClassLoader.php');	// Load classes
+require_once('../vendor/autoload.php');						// Composer autoloader
 
 // Application start
 // session_start();		// Start PHP Session

Backend/Views/Base/ErrorView.php → src/views/base/ErrorView.php

@@ -60,9 +60,9 @@ public function render(): void
 			(new APIView([$this->code => $this->message]))->render();		// Render error as JSON
 		} else {
 			(new LayoutView())
-				->addChild(new HeadingView("{$this->code} · {$this->message}"))
+				->addChild(new HeadingView("{$this->code} - {$this->message}"))
+				->addChildren(...$this->getChildren())
 				->render();													// Render error as HTML
-			$this->renderChildren();
 		}
 	}
 }

Backend/Views/Base/LayoutView.php → src/views/base/LayoutView.php

@@ -58,22 +58,18 @@ public function render(): void
 		<body>
 			<header>
 				<a href="/">Home</a>
-				<a href="/article/2">Other one</a>
-				<a href="/article/321">Should not be called</a>
+				<a href="/article/2">Article</a>
+				<a href="/article/321">Still article</a>
 				<a href="/api/sample">API</a>
-				<a href="/err">Error</a>
+				<a href="/err">404</a>
 			</header>
 
 			<main>
-				<?php foreach ($_SERVER as $key => $value) : ?>
-					<p><?= $key ?>: <?= $value ?></p>
-				<?php endforeach; ?>
-
 				<?php $this->renderChildren(); ?>
 			</main>
 
 			<footer>
-				<p>This page was generated in <?= (microtime(true) - $GLOBALS['start']) * 1000 ?> ms</p>
+				<p>generated in <?= number_format((microtime(true) - $GLOBALS['start']) * 1000, 2) ?> ms</p>
 			</footer>
 		</body>