Contao\Database::indexExists PHP Метод

    public function indexExists($strName, $strTable, $blnNoCache = false)
    {
        if ($strName == '' || $strTable == '') {
            return false;
        }
        foreach ($this->listFields($strTable, $blnNoCache) as $arrField) {
            if ($arrField['name'] == $strName && $arrField['type'] == 'index') {
                return true;
            }
        }
        return false;
    }