Truncate a string provided by the maximum limit without breaking a word.

truncate-string-words.php

<?php

    /**
     * truncate a string provided by the maximum limit without breaking a word
     * @param string $str
     * @param integer $maxlen
     * @return string
     */
     function truncateStringWords($str, $maxlen) {
        if (strlen($str) <= $maxlen) return $str;
    
        $newstr = substr($str, 0, $maxlen);
        if (substr($newstr, -1, 1) != ' ') $newstr = substr($newstr, 0, strrpos($newstr, " "));
    
        return $newstr.' ...';
    }

?>