How to get terms of not only the current cat but also of all its children

Question

I'm modding a theme to use parent taxonomy terms instead of all taxonomy terms, now I've been able to only display the parents, but now I've run into a count problem.

Basicly this is the code that has to be changed

$_products_in_term = get_objects_in_term( $term->term_id, $taxonomy ); 

This gets all the terms of the current term, which then later is used to do an intercept with and then count. Now how could I mod this code to not only get the terms of the current term but if it has children get the terms of all its children , (will only go 1 deep, not gonna work with grandchildren)

This is the code the full code

               foreach ($terms as $term) { 

                // Get count based on current view - uses transients
                $transient_name = 'wc_ln_count_' . md5( sanitize_key($taxonomy) . sanitize_key( $term->term_id ) );

                if ( false === ( $_products_in_term = get_transient( $transient_name ) ) ) {

                //  $_products_in_term = get_objects_in_term( $term->term_id, $taxonomy );

                $args2['child_of'] = $term->term_id;
                $terms = get_terms( $taxonomy , $args2 );
                $term_array=array();
                foreach($terms as $terms){
                $term_array[]= $terms->term_id;
                }

                $_products_in_term = get_objects_in_term( $term_array, $taxonomy ); 

                    set_transient( $transient_name, $_products_in_term );
                }

                $option_is_set = (isset($_chosen_attributes[$taxonomy]) && in_array($term->term_id, $_chosen_attributes[$taxonomy]['terms'])) ; 

                // If this is an AND query, only show options with count > 0
                if ($query_type=='and') {

                    $count = sizeof(array_intersect($_products_in_term, $woocommerce->query->filtered_product_ids));

                    // skip the term for the current archive
                    if ( $current_term == $term->term_id ) continue; 

                    if ($count>0 && $current_term !== $term->term_id ) $found = true;

                    if ($count==0 && !$option_is_set) continue;

                // If this is an OR query, show all options so search can be expanded
                } else { 

                    // skip the term for the current archive
                    if ( $current_term == $term->term_id ) continue;

                    $count = sizeof(array_intersect($_products_in_term, $woocommerce->query->unfiltered_product_ids));

                    if ($count>0) $found = true;

                }

Answer 1

$terms = get_term_children( $term->term_id , $taxonomy );
$term_array=array();
foreach($terms as $terms){
  $term_array[]= $terms;
}

$_products_in_term = get_objects_in_term( $term_array, $taxonomy );