How to call posts from this functions code? - wordpress

Question

I have a piece of code for displaying related posts by the post tag, but I don't know how to call posts in theme,
so I have this code which I have to put in my theme functions file:
function exe_get_related_posts_by_common_terms( $post_id, $number_posts = 0, $taxonomy = 'post_tag', $post_type = 'post' ) {
global $wpdb;
$post_id = (int) $post_id;
$number_posts = (int) $number_posts;
$limit = $number_posts > 0 ? ' LIMIT ' . $number_posts : '';
$related_posts_records = $wpdb->get_results(
$wpdb->prepare(
"SELECT tr.object_id, count( tr.term_taxonomy_id ) AS common_tax_count
FROM {$wpdb->term_relationships} AS tr
INNER JOIN {$wpdb->term_relationships} AS tr2 ON tr.term_taxonomy_id = tr2.term_taxonomy_id
INNER JOIN {$wpdb->term_taxonomy} as tt ON tt.term_taxonomy_id = tr2.term_taxonomy_id
INNER JOIN {$wpdb->posts} as p ON p.ID = tr.object_id
WHERE
tr2.object_id = %d
AND tt.taxonomy = %s
AND p.post_type = %s
GROUP BY tr.object_id
HAVING tr.object_id != %d
ORDER BY common_tax_count DESC" . $limit,
$post_id, $taxonomy, $post_type, $post_id
)
);
if ( count( $related_posts_records ) === 0 )
return false;
$related_posts = array();
foreach( $related_posts_records as $record )
$related_posts[] = array(
'post_id' => (int) $record->object_id,
'common_tax_count' => $record->common_tax_count
);
return $related_posts;
}
and now I want to call 10 posts from the above code in my single.php that can show post title and post thumbnail with the link to every post.

Answer 1

try something like that:
$query = new WP_Query(array(
'post_status' => 'publish',
'post_type' => 'your-posttype', // or 'any'
'tag_slug__in' => 'your-tag',
'order' => 'DESC',
'posts_per_page' => 10
));
Then you will get latest 10 posts

Answer 2

This function is very useful, people continually looking for ways to get related posts
What this function does:
The code you are using is a working function that is returning an array of posts related to current post depending on common terms.
How this function works:
You can call the function from your single.php file and as input you have to provide 4 info. The current post ID, the number of related posts to return, the post_term to filter the related posts (post_tag) and at last the post_type.
Example function call: exe_get_related_posts_by_common_terms(get_the_ID(), 10, 'post_tag', 'post')
The above example will return 10 post ids as array based on current post ID and the tag
- Returning the post array and loop through ID's
Now we only need a custom wp_query in order to loop through the array and format the output.
Example wp_query:
$args = array(
'post_type' => 'post',
'post__in' => $related_post
);
// The Query
$related_query = new WP_Query( $args );
Result:
Full working example returning the post titles in an unordered list:
<?php
$cpid = get_the_ID(); // get current post id
$related_posts = exe_get_related_posts_by_common_terms($cpid, 10, 'post_tag', 'post');
$posts_array = array_column($related_posts, 'post_id'); // new single dimension array with the ID's
$args = array(
'post_type' => 'post',
'post__in' => $posts_array
);
// The Query
$related_query = new WP_Query( $args );
if ($related_query->have_posts()) : ?>
<ul>
<?php while ($related_query->have_posts()) : $related_query->the_post(); ?>
<li><?php the_title(); ?></li>
<?php endwhile; ?>
</ul>
<?php endif; ?>
You can now set the look and fill as you like