Wordpress - How To Get Parent Category ID

Question

Wordpress - How To Get Parent Category ID

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my category is  
news
---->sport news

i have a post in

Answer 1

$thiscat =  get_query_var('cat'); // The id of the current category
$catobject = get_category($thiscat,false); // Get the Category object by the id of current category
$parentcat = $catobject->category_parent; // the id of the parent category