Titel der Beiträge eine unterkategorie ausgeben

<?php
$MyCat_Content = get_posts('numberposts=10&category=546');
$MyCat_Echo = '';


if (is_array($MyCat_Content)) {
        foreach ($MyCat_Content as $post) {
                $My_Content = strip_tags($post->post_content);
                $words = explode(' ', $My_Content, 21);
                if (count($words) > 20) {
                        array_pop($words);
                        array_push($words, ' ...');
                        $My_Content = implode(' ', $words);
                }
                $MyCat_Echo .= '<li><a href="' . get_permalink($post->ID) . '" title="' . $post->post_title . '">' . $post->post_title . '</a></li>';
        }
}


echo $MyCat_Echo;
?>