Count how many posts in category

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This is what I’m trying to do:

if number of posts is greater than 20 -> display link to another page (which shows all posts)
if number of posts is less than 20 -> don’t display the link

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So far I’ve been able to return the number of posts using 

$count_posts = wp_count_posts('inventory');
$published_posts = $count_posts->publish;

but I don’t know where to go from here, any suggestions?

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3 comments

  1. If I remember right count of posts in category is stored persistently in category object. So use get_category() or variation of it and fetch the number out of object.

    Example code (not tested):

    $category = get_category($id);
$count = $category->category_count;

if( $count > $something ) {

    // stuff
}

  2. You can access that from the object itself:

    foreach ( get_the_terms( get_the_ID(), 'taxonomy' ) as $term )
{
    printf( '%s (%s)', $term->name, $term->count );
}

  3. another simple way to do this is using get_terms. I use this when I need to display a category list AND I need to ignore a category which has a set minimum number of posts. 

     $cats = get_terms('category');
 foreach($cats as $cat){
     if($cat->count > 15){
     //do something here eg. display category name       
     //echo 'catname : ' .$cat->name;
     }
 }