BookStack\Services\LdapService::buildFilter PHP Метод

    protected function buildFilter($filterString, array $attrs)
    {
        $newAttrs = [];
        foreach ($attrs as $key => $attrText) {
            $newKey = '${' . $key . '}';
            $newAttrs[$newKey] = $attrText;
        }
        return strtr($filterString, $newAttrs);
    }