If you want to show random posts each time a client visits. There are many wordpress plugins which will give similar functionality. We have simple code for showing random posts which you need add in your wordpress theme.
Show Random Posts on page with WordPress
You need to create random.php page in your template. In that page just copy paste the following code:
<!--?<span class="hiddenSpellError" pre="" data-mce-bogus="1"-->php
query_posts(array('orderby' => 'rand', 'showposts' => 1));
if (have_posts()) :
while (have_posts()) : the_post(); ?>
<h1>php the_permalink() ?>"><!--?php the_title(); ?--></h1>
<!--?<span class="hiddenSpellError" pre="" data-mce-bogus="1"-->php the_content(); ?>
<!--?<span class="hiddenSpellError" pre="" data-mce-bogus="1"-->php endwhile;
endif; ?>
Than create page through wordpress admin panel and select the random page template.
