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Hi @mian117,

I’d need to see some more of your code so I can help. How are you getting the current category ID exactly?

Hi @hcabrera,
Here is the code which gets the top-level category.

function smart_category_top_parent_id ($catid) {
	while ($catid) {
		$cat = get_category($catid);
		$catid = $cat->category_parent; 
		$catParent = $cat->cat_ID;
	}
	return $catParent;
}

$postID =  get_queried_object_id();

$category = get_the_category( $postID );
$catid = $category[0]->cat_ID;

$top_level_cat = smart_category_top_parent_id ($catid);

Alright, I’ll give that a test once I get some free time and report back.

One thing I’ll share right away -if you don’t mind some feedback- is that your smart_category_top_parent_id() function could use some minor code improvements.

Oh, one more thing. How do you usually categorize your posts? Do you assign both the parent category and the child category to a post? Just the child category?

I assign both, parent and child.

Following this…
Any updates @hcabrera

Thanks!

Nope, no updates unfortunately. Have been busy with work and so haven’t had the chance to get a test site up & running to test this yet @nextbracket.

Hey @mian117 & @nextbracket,

Sorry this took so long, it’s been a couple of busy weeks for me.

So I gave this some thought and came with a slightly different solution. Without further ado, it looks something like this:

<?php
function get_top_category($catid) {
	$cat = null;

	do {
		$cat = get_category($catid);
		$catid = $cat->cat_ID;
	} while( $cat->category_parent );
	
	return $cat;
}

if ( is_single() ) :

	$postID =  get_queried_object_id();

	$category = get_the_category( $postID );
	$catid = $category[0]->cat_ID;
	$top_category = get_top_category($catid);

	?>
	<h2><?php printf( __('Most Popular In %s'), $top_category->name); ?></h2>

	<?php
	echo do_shortcode("[wpp cat='{$top_category->cat_ID}' limit=10 stats_views=0 stats_category=1 range='last24hours' thumbnail_width=157 order_by='views']");

endif;
?>

If you have any comments / questions please let me know.

Also, please keep in mind that:

1. The code above will only work when viewing a post.
2. The code assumes that all posts are assigned both the parent category(ies) and a child category (or multiple child categories).