Обрезаем по символьно и по словам

//*************Обрезаем по символьно**************************************//
	public static function limitChars($str, $limit = 100, $endChar = NULL, $preserveWords = FALSE)
    {
        $endChar = ($endChar === NULL) ? '…' : $endChar;

        $limit = (int) $limit;

        if (trim($str) === '' OR strlen($str) <= $limit)
            return $str;

        if ($limit <= 0)
            return $endChar;

        if ($preserveWords == FALSE)
        {
            return rtrim(substr($str, 0, $limit)).$endChar;
        }

        preg_match('/^.{'.($limit - 1).'}\S*/us', $str, $matches);

        return rtrim($matches[0]).(strlen($matches[0]) == strlen($str) ? '' : $endChar);
    }

//*************Обрезаем по словам**************************************//
 public static function limitWords($str, $limit = 100, $endChar = NULL)
    {
        $limit = (int) $limit;
        $endChar = ($endChar === NULL) ? '&#8230;' : $endChar;

        if (trim($str) === '')
            return $str;

        if ($limit <= 0)
            return $endChar;

        preg_match('/^\s*+(?:\S++\s*+){1,'.$limit.'}/u', $str, $matches);

        // Only attach the end character if the matched string is shorter
        // than the starting string.
        return rtrim($matches[0]).(strlen($matches[0]) === strlen($str) ? '' : $endChar);
    }