How can I get parent category ID in single page template, outside of loop?

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

The code isn't working outside loop correctly.

  • This should work on single posts, see this answer. What happens on your site? Are there other queries on that page?
    – fuxia
    Jun 5, 2013 at 5:32
  • I need parent category ID, it returns just category ID. Anyway, I got the solution and posed as answer.
    – IFightCode
    Jun 5, 2013 at 8:38

1 Answer 1


I'm solved, by using:


Thanks anyway.

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