Functions

Pluggable functions are wrapped in if (!function_exists('function_name')) : … endif; and fetched in functions.php and woocommerce/wc-functions.php.

if (!function_exists('function_name')) :

  // Function

endif;

Functions can be overridden by copying the function between the if and endif to the child’s functions.php.

Example: Changing the breadcrumb

/**
 * Breadcrumb
 */
function the_breadcrumb() {

  if (!is_home()) {
    echo '<nav aria-label="breadcrumb" class="mb-4 mt-2">';
    echo '<ol class="breadcrumb mb-0">';
    echo '<li class="breadcrumb-item"><a href="' . home_url() . '">' . 'Home' . '</a></li>';
    // display parent category names with links
    if (is_category() || is_single()) {
      $cat_IDs = wp_get_post_categories(get_the_ID());
      foreach ($cat_IDs as $cat_ID) {
        $cat = get_category($cat_ID);
        echo '<li class="breadcrumb-item"><a href="' . get_term_link($cat->term_id) . '">' . $cat->name . '</a></li>';
      }
    }
    // display current page name
    if (is_page() || is_single()) {
      echo '<li class="breadcrumb-item active" aria-current="page">' . get_the_title() . '</li>';
    }
    echo '</ol>';
    echo '</nav>';
  }
}

Useful functions

• inc/breadcrumb.php – Breadcrumb
• inc/widgets.php – Widgets
• inc/pagination.php – Pagination
• inc/template-tags.php – Categories badge, tags badge, featured image, author, date, comments count
• woocommerce/inc/breadcrumb.php – WooCommerce breadcrumb
• woocommerce/inc/wc-mini-cart.php – Cart content in navbar mini-cart. Note that this function is AJAX loaded. When doing changes there, you must add or remove something in your cart. Reloading the page has no effect.