Веб-разработка без фреймворков

ini_set("display_errors", 1);
error_reporting(E_ALL);

(function () {
	include 'include/config.php';
	include 'include/autoloader.php';
	include 'include/defines.php';
	include 'include/class/vendor/Smarty/Smarty.class.php';

	define('IS_AJAX', false);

	header::cache(false);

	comet::connect();

	try {
		router::route();
	} catch (Throwable $e) {
		http_response_code(404);
		echo '<pre>';
		echo $e->getMessage();
		echo str_repeat(chr(13) . chr(10), 2);
		var_dump($e->getTrace());
		echo '</pre>';
	}
})();

class router {
	public static function uri() {
		static $out = null;
		if (is_array($out)) return $out;

		$uri = (stripos($_SERVER['REQUEST_URI'], '?')) ? stristr($_SERVER['REQUEST_URI'], '?', true) : $_SERVER['REQUEST_URI'];
		$out = explode('/', substr($uri, 1));

		for ($i = 0; $i <= 10; $i++) {
			$out[$i] = array_key_exists($i, $out) ? trim($out[$i]) : '';
		}

		if (!preg_match('/^[a-z0-9_-]+$/i', $out[0])) $out[0] = 'home';
		return $out;
	}

	public static function route() {
		$uri = self::uri()[0];

		if (in_array($uri, ['signout', 'sign-out', 'logout'])) user::signOut();

		$folder = $uri === 'root' ? '/admin/page' : '';
		$path   = SMARTY_TEMPLATE_DIR . "/page$folder/$uri/$uri.php";

		if (is_readable($path)) {
			include $path;
			return;
		}

		header::noFound(true);
	}
}