Крил

$termchildren = get_terms('product_cat', $args); 
$array = (array)$termchildren; 
$sortirovka = array();
foreach($array as $value){
	$sortirovka[$value->name] = $value;
}
ksort($sortirovka,SORT_LOCALE_STRING);

global $product, $woocommerce_loop;

if ( empty( $product ) || ! $product->exists() ) {
	return;
}

$related = $product->get_related( $posts_per_page );

if ( sizeof( $related ) == 0 ) return;

foreach (get_the_terms( $product->id, 'product_cat' ) as $cat){
   if($cat->parent == 0){
	   $mama = $cat->term_id;	   
		foreach (get_the_terms( $product->id, 'product_cat' ) as $cat2){
			if($cat2->parent == $cat->term_id){
				$child = $cat2->term_id;				
				break;				
			}			
		}
	   break;
   }   
}


$args = array(	
	'orderby'=>'rand',
	'tax_query' => array(
		array(
			'taxonomy' => 'product_cat',			
			'terms' => $child,
			include_children => false
		)
	)
);
$childprod = new WP_Query( $args );
$arr = array();
foreach ($childprod->posts as $pid){	
	array_push($arr, $pid->ID);			
}
wp_reset_postdata();
unset($arr[array_search($product->id,$arr)]);
shuffle($arr); 
array_splice($arr, 3);
if(count($arr) < 3){
	$arr = $related;
}

$args = apply_filters( 'woocommerce_related_products_args', array(
	'post_type'            => 'product',
	'ignore_sticky_posts'  => 1,
	'no_found_rows'        => 1,
	'posts_per_page'       => $posts_per_page,
	'orderby'              => $orderby,	
	'post__in'             => $arr,	
	'post__not_in'         => array( $product->id )
) );

$products = new WP_Query( $args );

$woocommerce_loop['columns'] = $columns;

if ( $products->have_posts() ) : ?>

</div>
</div>
<div style="clear: both;"></div>
</div>

	<div class="related products">

		<h2 style="display: inline; text-transform: uppercase;"><?php _e( 'Related Products', 'woocommerce' ); ?></h2>

		<?php woocommerce_product_loop_start(); ?>

			<?php while ( $products->have_posts() ) : $products->the_post(); ?>

$customer_orders = get_posts( apply_filters( 'woocommerce_my_account_my_orders_query', array(
'numberposts' => $order_count,
'meta_key' => '_customer_user',
'meta_value' => get_current_user_id(),
'post_type' => wc_get_order_types( 'view-orders' ),
'post_status' => array_keys( wc_get_order_statuses() )
) ) );

add_action('init','removeOldRedirectFunction');
function removeOldRedirectFunction(){
    remove_action( 'template_redirect', 'wc_template_redirect' );
    add_action('template_redirect', 'my_wc_template_redirect');
}

} elseif ( $this->post->post_status === 'nal' ) {
			$purchasable = true;

		// Check the product is published
		} elseif ( $this->post->post_status !== 'publish' && ! current_user_can( 'edit_post', $this->id ) ) {
			$purchasable = false;		
		}

} elseif ( $this->post->post_status === 'nal' ) {
			$visible = true;
		// Published/private
		} elseif ( $this->post->post_status !== 'publish' && ! current_user_can( 'edit_post', $this->id ) ) {
			$visible = false;