Question

I’m using this to pull out the four most popular posts based on comments:

        <?php
            $pc = new WP_Query('orderby=comment_count&posts_per_page=4'); ?>
            <?php while ($pc->have_posts()) : $pc->the_post(); ?>
            <div class="popular-post-item">
            <span class="popular-title"><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" class="post-links"><?php the_title(); ?></a></span>
            <span class="popular-author">by: <?php the_author() ?></span> 
            <a href="<?php the_permalink(); ?>" class="action">Read Full Article</a>
            </div>
        <?php endwhile; ?> 

What I need is the fourth:

        <div class="popular-post-item"> 

to have another class added called .last

any ideas?

Answer 1

use $pc->post_count to get the number of posts returned by WP_Query and compare it to iterator.

    <?php
        $pc = new WP_Query('orderby=comment_count&posts_per_page=4'); 
        $count = $pc->post_count;
        $i = 0;
        ?>
    <?php while ($pc->have_posts()) : $pc->the_post(); ?>
        <div class="popular-post-item<?php if ($i === $count) echo ' last'; ?>">
            <span class="popular-title"><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>" class="post-links"><?php the_title(); ?></a></span>
            <span class="popular-author">by: <?php the_author() ?></span> 
            <a href="<?php the_permalink(); ?>" class="action">Read Full Article</a>
        </div>
        <?php
            // incriment counter
            $i++;
        ?>
    <?php endwhile; ?>