if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches))
        {
            $c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i',
                str_replace($matches[0],
                    str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]),