WordPress.org

1. Tommy White
   Member
   Posted 1 year ago #

   I have a snippet of code that I have been trying to learn how it functions so that I can modify it to pull in related posts by tags instead of categories. I am hoping someone can teach me what to do.

   function get_related_posts($postdata)
   {
   	$postCatArr = wp_get_post_categories( $postdata->ID );
   	$post_array = array();
   	for($c=0;$c<count($postCatArr);$c++)
   	{
   		$category_posts=get_posts('category='.$postCatArr[$c]);
   		foreach($category_posts as $post)
   		{
   			if($post->ID !=  $postdata->ID)
   			{
   				$post_array[$post->ID] = $post;
   			}
   		}
   	}
   if($post_array)
   {
   ?>

   I looked up most of the functions but some I didn't understand what the code is telling WP what to do, like: if($post->ID != $postdata->ID) and for($c=0;$c<count($postCatArr);$c++).

   Can anyone shed some light on what I need done so that I can learn to make modifications easier?

   Thank you!

2. alchymyth
   The Sweeper
   Posted 12 months ago #

   instead
   wp_get_post_categories( $postdata->ID );
   try and use
   wp_get_post_terms( $postdata->ID, 'post_tag' );
   http://codex.wordpress.org/Function_Reference/wp_get_post_terms

   instead
   get_posts('category='.$postCatArr[$c]);
   try and use
   get_posts('tag_id='.$postCatArr[$c]->term_id);
   http://codex.wordpress.org/Class_Reference/WP_Query#Tag_Parameters
   use tag_id

   ---
   this section
   if($post->ID != $postdata->ID)
   is there to avoid to duplicate the current post
   http://php.net/manual/en/language.operators.logical.php

   this section
   for($c=0;$c<count($postCatArr);$c++)
   is an ordinary php 'for' loop
   http://php.net/manual/en/control-structures.for.php

3. Tommy White
   Member
   Posted 12 months ago #

   Thank you for the explanations and information!

Topic Closed

This topic has been closed to new replies.