Выводим в woocommerce категории рандомно

Добавляем в нужное место код

<?php
$max = 5; //number of categories to display
$taxonomy = 'product_cat';
$terms = get_terms('taxonomy='.$taxonomy.'&orderby=name&order=ASC&hide_empty=0');

// Random order
shuffle($terms);

// Get first $max items
$terms = array_slice($terms, 0, $max);

// Sort by name
usort($terms, function($a, $b){
  return strcasecmp($a->name, $b->name);
});

// Echo random terms sorted alphabetically
if ($terms) {
  foreach($terms as $term) {
    echo '<p><a href="' .get_term_link( $term, $taxonomy ) . '" title="' .  sprintf( __( "View all posts in %s" ), $term->name ) . '" ' . '>' . $term->name.'</a></p> ';
  }
}