a year ago posts

<?php
$args = array(
'numberposts' => -1,
'year' => date('Y')-1,
'month' => date('n'),
'day' => date('j')
);
$last_year = get_posts($args);
if ($last_year) {
$temp = $post; ?>
<span class="last-year">
<h3>A Year Ago</h3>
<?php foreach($last_year as $post) :
setup_postdata($post); ?>
<a href="<?php echo get_permalink($post->ID); ?>"><?php the_title(); ?></a><br />
<?php endforeach;
$post = $temp; ?>
</span>
<?php } ?>