Truncates a string after n character, respecting word boundaries

gistfile1.php

<?php

/**
 * Truncates $string after $length characters, without splitting words.
 *
 * Inspired by http://stackoverflow.com/questions/250357
 *
 * @param string $string
 * @param integer $length
 * @return string
 */
function smartTruncate($string, $length)
{
    if(strlen($string) <= $length)
    {
        return $string;
    }
    else
    {
        $bits = explode(' ', substr($string, 0, $length));
        array_pop($bits);
        $string = implode(' ', $bits);
        return $string;
    }
}

?>