Drupal 7

  $field_collection = entity_load_single('field_collection_item', 642);   $field_collection->delete();
https://www.zyxware.com/articles/4817/adding-meta-tags-to-custom-pages-programmatically#comment-26534  
https://www.dru.io/question/5837
// Добавляет Canonical function pages_in_theme_preprocess_html(&$var) {   $canonical_tag = array(     '#type'       => 'html_tag',     '#tag'        => 'link',     '#attributes' => array(
commerce/modules/checkout/includes/commerce_checkout.pages.inc Функция: function commerce_checkout_router