Non-Recursive get_term_children()

Question

I have a custom taxonomy called product_category. There are child terms 3 levels down.

They look like this:

Term1
    Term2
        Term3

When I am on the taxonomy page for Term1, I wish to use get_term_children() to retrieve Term2, without retrieving Term3.

If that makes sense...

Can this be achieved with get_term_children() or is there another function I can use?

Answer 1

Presumably you want to output term data, so you can use get_terms with the child_of argument, then iterate over returned terms and check that the parent of each term is your main term id:

$parent_id = 42;
$children = get_terms( 'product_category', array( 'child_of' => $parent_id ) );

foreach( $children as $child ) {
    if( $parent_id == $child->parent )
        echo $child->name;
}

This will exclude grandchildren, as their parent term ID will be a child term, not your top level term.