CODEWITHSUNDEEP
phparrayswordpress
hove rive
hove rive

Reputation: 23

WordPress: How to get all sub categories id and add the parent category's ID to the new array?

I want to get all the sub categories' ID and add all the sub cat IDs and the parent ID to a new array.

For example:

Parent $ID=1
  sub cat 1 :11
  sub cat 2 :12
  sub cat 3 :13
  sub cat 4 :14
$arr = array(11,12,13,14)

The result:

$arr2 = array(1,11,12,13,14) // add parent ID to the array.

$categories=get_categories($ID);

Upvotes: 2

Views: 1606

Answers (1)

MortalViews
MortalViews

Reputation: 1260

1.) get_all_category_ids() will retrive all the category IDS. it returns an array containing both the child and parent category ID'es.

2.) If you want to get it for a particular category: (Note: it will include all the child/child*n as well) 

 //$pid = parent category id
$Result = array_merge(array_diff(explode('/',get_category_children($pid)),array("")),array($pid));

3.) if you want only the immediate child categories: ie: parent/child and not parent/child/child*n 

            //$pid = parent category id;         
            $child_cats=array();

            foreach(get_all_category_ids() as $cat)
            {
                if(get_category($cat)->parent==$pid)
                {
                    $child_cats[]=$cat;
                }
            }

            $result = array_merge($child_cats,array($pid));

Upvotes: 2

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