How can I truncate a string to the first 20 words in php

    // https://stackoverflow.com/questions/965235/how-can-i-truncate-a-string-to-the-first-20-words-in-php
    function limit_text($text, $limit) {
        if (str_word_count($text, 0) > $limit) {
            $words = str_word_count($text, 2);
            $pos = array_keys($words);
            $text = substr($text, 0, $pos[$limit]) . '...';
        }
        return $text;
    }