hanyuu/public/index.php

<?php
namespace Hanyuu;

require_once __DIR__ . '/../hanyuu.php';

set_exception_handler(function(\Throwable $ex) {
    http_response_code(500);
    ob_clean();

    if(HAU_DEBUG) {
        header('Content-Type: text/plain; charset=utf-8');
        echo (string)$ex;
        exit;
    }

    header('Content-Type: text/html; charset=utf-8');
    //echo file_get_contents(HAU_DIR_PUBLIC . '/error-500.html');
    echo '500';
    exit;
});

if(file_exists(HAU_ROOT . '/.migrating')) {
    http_response_code(503);
    //echo file_get_contents(HAU_DIR_PUBLIC . '/error-503.html');
    echo '503';
    exit;
}

$hau->createRouting()->dispatch();