Truncate paragraphs in PHP

gistfile1.aw

<?php
function truncate_paragraphs($text, $limit) {
    preg_match_all('/<p>(.*)<\/p>/', $text, $matches);
    $paragraphs = $matches[0];
    if (count($paragraphs) > $limit) {
        $paragraphs = array_slice($paragraphs, 0, $limit); 
        return implode("\n", $paragraphs);
    } else {
        return $text;
    }
}