Elgg\Application::upgrade PHP Метод

    public static function upgrade()
    {
        // we want to know if an error occurs
        ini_set('display_errors', 1);
        define('UPGRADING', 'upgrading');
        self::start();
        // check security settings
        if (elgg_get_config('security_protect_upgrade') && !elgg_is_admin_logged_in()) {
            // only admin's or users with a valid token can run upgrade.php
            elgg_signed_request_gatekeeper();
        }
        $site_url = elgg_get_config('url');
        $site_host = parse_url($site_url, PHP_URL_HOST) . '/';
        // turn any full in-site URLs into absolute paths
        $forward_url = get_input('forward', '/admin', false);
        $forward_url = str_replace(array($site_url, $site_host), '/', $forward_url);
        if (strpos($forward_url, '/') !== 0) {
            $forward_url = '/' . $forward_url;
        }
        if (get_input('upgrade') == 'upgrade') {
            $upgrader = _elgg_services()->upgrades;
            $result = $upgrader->run();
            if ($result['failure'] == true) {
                register_error($result['reason']);
                forward($forward_url);
            }
            // Find unprocessed batch uprade classes and save them as ElggUpgrade objects
            $has_pending_upgrades = _elgg_services()->upgradeLocator->run();
            if ($has_pending_upgrades) {
                // Forward to the list of pending upgrades
                $forward_url = '/admin/upgrades';
            }
        } else {
            $rewriteTester = new \ElggRewriteTester();
            $url = elgg_get_site_url() . "__testing_rewrite?__testing_rewrite=1";
            if (!$rewriteTester->runRewriteTest($url)) {
                // see if there is a problem accessing the site at all
                // due to ip restrictions for example
                if (!$rewriteTester->runLocalhostAccessTest()) {
                    // note: translation may not be available until after upgrade
                    $msg = elgg_echo("installation:htaccess:localhost:connectionfailed");
                    if ($msg === "installation:htaccess:localhost:connectionfailed") {
                        $msg = "Elgg cannot connect to itself to test rewrite rules properly. Check " . "that curl is working and there are no IP restrictions preventing " . "localhost connections.";
                    }
                    echo $msg;
                    exit;
                }
                // note: translation may not be available until after upgrade
                $msg = elgg_echo("installation:htaccess:needs_upgrade");
                if ($msg === "installation:htaccess:needs_upgrade") {
                    $msg = "You must update your .htaccess file so that the path is injected " . "into the GET parameter __elgg_uri (you can use install/config/htaccess.dist as a guide).";
                }
                echo $msg;
                exit;
            }
            $vars = array('forward' => $forward_url);
            // reset cache to have latest translations available during upgrade
            elgg_reset_system_cache();
            echo elgg_view_page(elgg_echo('upgrading'), '', 'upgrade', $vars);
            exit;
        }
        forward($forward_url);
    }

<?php

$autoload_path = __DIR__ . '/vendor/autoload.php';
$autoload_available = (include_once $autoload_path);
if (!$autoload_available) {
    die("Couldn't include '{$autoload_path}'. Did you run `composer install`?");
}
\Elgg\Application::upgrade();