Correct cycle in wordpress?

Question

WordPress

Please let me know if this code is correct. This is single.php: here is the usual post output + a block for the output of the latest posts has been added at the bottom. Question: how well is everything built here?

<?php get_header(); ?>

    <div id="content">

        <?php if (have_posts()) : $count = 0; ?>
        <?php while (have_posts()) : the_post(); $count++; ?>
        
  <div <?php post_class(); ?>>
        
                <h1><?php the_title(); ?></h1>
                                     
                <div class="entry">
                	<?php the_content(); ?>	
    </div>
                    
         </div><!-- .post -->

          <div id="post-entries">
              
    <div class="nav-prev fl"><?php previous_post_link( '%link', '<span class="meta-nav">&larr;</span> %title' ) ?></div>
           <div class="nav-next fr"><?php next_post_link( '%link', '%title <span class="meta-nav">&rarr;</span>' ) ?></div>

          </div><!-- #post-entries -->
      
                <?php comments_template('', true); ?>
                            
    <?php endwhile; else: ?>
    
                <div>
            	<p><?php _e('Sorry, no posts matched your criteria.') ?></p>
    </div>           
       	<?php endif; ?>

        <?php get_sidebar(); ?>

    </div><!-- #content -->
  

<h2>Здесь выводятся последние записи</h2>

<ul>
  <?php $random_posts = get_posts('numberposts=6&orderby=date'); ?>
  <?php foreach ( (array) $random_posts as $post ) : ?>

    <li>
    <a href="<?php echo get_permalink($postid); ?>">
      <?php the_post_thumbnail(array(300, 300, true)); ?>
    </a>
    <h2><a href="<?php echo get_permalink($postid); ?>" title="<?php echo $title ?>"><?php echo $title ?></a></h2>
    </li>

<?php endforeach; ?>

</ul>
    
<?php get_footer(); ?>

Answer 1

In the first cycle, I did not quite understand why there was a counter in the cycle. In the second cycle, everything is somehow strange, but it will work.
For some reason, you use <?php echo get_permalink($postid); ?>, although you can get by with standard functions. Why crutches?