Truncate Text

function TruncateTextW(string $text, int $length) : string
{
    $result = '';
    if (strlen($text) <= $length)
    {
        $result = $text;
    }
    else
    {
        $result = substr($text, 0, $length);
        $end = substr($text, $length);
        $m = null;
        if (preg_match('/([.,\s!?\r:;])/', $end, $m))
        {
            $firstSeparator = strpos($end, $m[1]);
            $result .= substr($end, 0, $firstSeparator).'...';
        }
    }
    return $result;
}