Get Short Title of the Title in PHP Function

Simple function to get subset of words from a big string. Use this simple function to trim a big sentence into a short string with subset of words.

function getTrimedSentence($string, $max_length, $offset=0, $add_dots=1){
    $words_array = explode(" ", $string);
    return
        ($add_dots && $offset>0 ? " ... " : "") .
        implode(" ", array_splice($words_array, $offset, $max_length)) .
        ($add_dots && $max_length < count($words_array) ? " ... " : "");
}