App\Http\Controllers\SetupController::doUpdate PHP Method

    public function doUpdate()
    {
        $resource = opendir(database_path('update_scripts'));
        $updateScriptExist = false;
        $tips = [];
        while ($filename = @readdir($resource)) {
            if ($filename != "." && $filename != "..") {
                preg_match('/update-(.*)-to-(.*).php/', $filename, $matches);
                // skip if the file is not valid or expired
                if (!isset($matches[2]) || version_compare($matches[2], config('app.version'), '<')) {
                    continue;
                }
                $result = (require database_path('update_scripts') . "/{$filename}");
                if (is_array($result)) {
                    // push tip to array
                    foreach ($result as $tip) {
                        $tips[] = $tip;
                    }
                }
                $updateScriptExist = true;
            }
        }
        closedir($resource);
        foreach (config('options') as $key => $value) {
            if (!Option::has($key)) {
                Option::set($key, $value);
            }
        }
        if (!$updateScriptExist) {
            // if update script is not given
            Option::set('version', config('app.version'));
        }
        return view('setup.updates.success', ['tips' => $tips]);
    }