UpgradeTool::upgrade PHP Метод

    function upgrade()
    {
        $installer = new Upgrade(array());
        $installer->setLogger($this);
        if ($installer->execute()) {
            if (count($installer->getNotes()) > 0) {
                printf("\nRelease Notes\n");
                printf("----------------------------------------\n");
                foreach ($installer->getNotes() as $note) {
                    printf("%s\n\n", $note);
                }
            }
            $newVersion =& $installer->getNewVersion();
            printf("Successfully upgraded to version %s\n", $newVersion->getVersionString(false));
        } else {
            printf("ERROR: Upgrade failed: %s\n", $installer->getErrorString());
        }
    }