How to get the number of posts in a selected category?

Question

I would like to show the number of posts on the category page. How is it possible? I tried to find a solution but no luck..

Thank you!

Answer 1

If you are on a category archive you don't need to query all the posts of the category like Christopher Ross suggested and you can't use get_the_category() like Max Yudin suggested unless you are already in the loop.

What you can do is simply get the current category object using get_queried_object() which will hold the post count, ex:

$category = get_queried_object();
echo $category->count;

Answer 2

$category = get_the_category(); 
echo $category[0]->category_count;

See /Function_Reference/get_the_category

Next time when you think about categories just have a close look at category functions in Codex.