Get Related Post by Category in WordPress without Plugin

Interlinks in your blog articles will allow all types visitors to get related content to the current post. This will help to build up page views on your blog and build most visitor engagement.

But it is time consuming to engage visitors if you do not have proper links in blog to pick the related post. So you have to make sure you link correctly to related posts. And WordPress have algorithm that would find other posts within the same category as the current post, and it will list them as related posts.

Every post that you put up on your blog should have a one or multi category. Therefore if you can match these category to other blog posts you will easily be able to find posts which are similar to the current post.

The below code uses post’s category as a criteria to fetch out the similar posts. This is really useful if each of your post belongs to at-least one category. Using this, you can ensure that all the displayed related posts would belong to the same category, this would improve the on page seo too.

<?php

$catArgs = array(
	'category__in'	=> wp_get_post_categories($post->ID),
	'showposts'	=> 5,//display number of posts
	'orderby'	=>'rand',//display random posts
	'post__not_in'	=> array($post->ID)
 ); 

$cat_post_query = new WP_Query($catArgs); 

if( $cat_post_query->have_posts() ) { 
	while ($cat_post_query->have_posts()) : $cat_post_query->the_post(); ?> 
		<li> <a href="<?php the_permalink() ?>"> <?php the_title(); ?></a></li> 
<?php endwhile; 

wp_reset_query(); } ?>

Still if you have any problem to set up, please drop a message bellow. Hope we can solve your any problem.

Thanks.

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Mehedi Hasan

Cool WordPress Developer having much agile experience to develop any kind of WordPress sites & plugins. Also good in troubleshooting, fixing & making any kind of tweaks for WP site.

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Mehedi Hasan

Cool WordPress Developer having much agile experience to develop any kind of WordPress sites & plugins. Also good in troubleshooting, fixing & making any kind of tweaks for WP site.

7 thoughts on “Get Related Post by Category in WordPress without Plugin

  • July 29, 2015 at 9:22 am
    Permalink

    Thank you soooo much for this code!
    I’m trying to put it on a widget thru PHP Code Widget plugin.
    It seems to work fine but I can’t reach any URL.
    Could I fix this issue?

    Thank you

    Reply
  • July 8, 2016 at 1:37 pm
    Permalink

    hi, thank you for share that code,
    sorry, maybe you need fix a bit

    <a href="”>

    seems should be like this :

    <a href="”>

    regards

    Reply
    • July 16, 2016 at 10:27 am
      Permalink

      Thanks @silvia.
      I just fixed it 🙂

      Reply
  • July 8, 2016 at 1:38 pm
    Permalink

    // to // without !

    Reply
  • August 13, 2019 at 9:30 am
    Permalink

    Hi, is it possible to limit them by date? Show only those of the last year?

    Reply
    • August 26, 2019 at 11:54 pm
      Permalink

      Hi Luigi,
      This is possible by adding Date Query in arguments :
      “`
      $catArgs = array(
      ‘category__in’ => wp_get_post_categories($post->ID),
      ‘showposts’ => 5,//display number of posts
      ‘orderby’ =>’rand’,//display random posts
      ‘post__not_in’ => array($post->ID),
      ‘date_query’ => array(
      array(
      ‘year’ => 2018,
      ‘month’ => 12,
      ‘day’ => 30,
      ),
      ),
      );
      “`
      Hope this helps 🙂

      Reply

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