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1. Daiv
   Member
   Posted 1 year ago #

   I'm trying to get a plugin to identify a child of a child.
   parent category
   - child category
   - - child of child category (I need to identify this)
   - - - child of child of child category (I need to identify this as well)

2. yoshi
   Member
   Posted 1 year ago #

   If you are using permalink, use get_category_link and check the url (e.g. numbers of '/'s) is one way.

   You can also keep looking up $category->parent if the category has 2 or more ancestors.

   parent category (depth:0)
   - child category (depth:1)
   - - child of child category (depth:2, ID:10)
   - - - child of child of child category (depth:3, ID:11)

   <?php
   function cat_deeper_than($depth = 1, $cat_id = 0) {
     $cat = get_category($cat_id);
     if (!$cat->parent) return false;
     if ($depth <= 0) return ture;
     return cat_deeper_than($depth - 1, $cat->parent);
   }
   
   echo cat_deeper_than(1, 11) ? 'child of sub category' : 'this is not';
   echo cat_deeper_than(1, 12) ? 'child of sub category' : 'this is not';
   ?>

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