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Here are the list of most commonly used WordPress code snippets by designers. If I’ve missed any WordPress code, please comment below.

Display Recent Posts

<?php wp_get_archives('type=postbypost&limit=5'); ?>
or

<?php $recentposts = get_posts('numberposts=12&category=4');
foreach ($recentposts as $post) : setup_postdata($post); ?>
<li><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></li> <?php endforeach; ?>

Display Categories

<h2>Categories</h2>
<ul>
<?php wp_list_cats('sort_column=name'); ?>
</ul>

Display Archives

<h2>Archives</h2>
<ul>
<?php wp_get_archives('type=monthly'); ?>
</ul>

Display WordPress Tags Cloud

<?php wp_tag_cloud('smallest=8&largest=36&'); ?>

Display Blogroll

<ul> <?php wp_list_bookmarks('title_li=&categorize=0'); ?> </ul>

Display WordPress Tags

<?php the_tags(); ?>

Display a Pages Menu

<h2>Pages</h2>
<ul>
<?php wp_list_pages('title_li='); ?>
</ul>

Display Recent Comments

<?php
global $wpdb;
$sql = "SELECT DISTINCT ID, post_title, post_password, comment_ID,
comment_post_ID, comment_author, comment_date_gmt, comment_approved,
comment_type,comment_author_url,
SUBSTRING(comment_content,1,30) AS com_excerpt
FROM $wpdb->comments
LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID =
$wpdb->posts.ID)
WHERE comment_approved = '1' AND comment_type = '' AND
post_password = ''
ORDER BY comment_date_gmt DESC
LIMIT 10";
$comments = $wpdb->get_results($sql);
$output = $pre_HTML;
$output .= "\n<ul>";
foreach ($comments as $comment) {
$output .= "\n<li>".strip_tags($comment->comment_author)
.":" . "<a href=\"" . get_permalink($comment->ID) .
"#comment-" . $comment->comment_ID . "\" title=\"on " .
$comment->post_title . "\">" . strip_tags($comment->com_excerpt)
."</a></li>";
}
$output .= "\n</ul>";
$output .= $post_HTML;
echo $output;?>

Display Admin Section

<ul>
<?php wp_register(); ?>
<li><?php wp_loginout(); ?></li>
<li><a href="http://www.wordpress.org/">WordPress</a></li>
<?php wp_meta(); ?>
<li><a href="http://validator.w3.org/check?uri=referer">XHTML</a></li>
</ul>

Display Top Comments

<?php $result = $wpdb->get_results("SELECT
comment_count,ID,post_title FROM $wpdb->posts ORDER BY comment_count
DESC LIMIT 0 , 10");
foreach ($result as $topten) {
$postid = $topten->ID;
$title = $topten->post_title;
$commentcount = $topten->comment_count;
if ($commentcount != 0) { ?>
<li><a href="<?php echo get_permalink($postid); ?>"
title="<?php echo $title ?>"><?php echo $title
?></a></li>
<?php } } ?>