Text Truncation Function

function truncate($string, $length = 512, $ending = '…') {
    if(mb_strlen($string) < $length) return $string;
    $strip = strip_tags($string);
    do {
        $strip = mb_substr($strip, 0, $length);
        $length--;
        if($length <= 0) break;
    } while(mb_strtoupper($strip[$length]) == mb_strtolower($strip[$length]));

    return $strip . $ending;
}