Скрипт для генерации порядковых номеров за 1 день

$order_number_today = render($content['field_number_today'][0]['#markup']); // Присваиваем текущее значение порядкового номера ноде
$date_visit = render($content['field_date_visit']['#items'][0]['value']); // в формате 2016-04-16 00:00:00

if(empty($order_number_today)) { // если порядковый номер еще не присвоен
        $order_number_today = render($content['field_number_today'][0]['#markup']);
        $date_visit = render($content['field_date_visit']['#items'][0]['value']);

        if(empty($order_number_today)) {
            $query = new EntityFieldQuery();
            $query->entityCondition('entity_type', 'node');
            $query->propertyCondition('type', 'order');
            $query->propertyCondition('status', 1);
            $query->fieldCondition('field_date_visit', 'value', $date_visit);
            $query->fieldOrderBy('field_number_today', 'value', 'DESC');
            $query->range(0, 1);
            $result = $query->execute();
            if (!empty($result['node'])) {
                $nodes = node_load_multiple(array_keys($result['node']));
                foreach ($nodes AS $node) {
                    $last_number_today = $node->field_number_today['und'][0]['value']; //узнаем последний порядковый номер
                }
                $node = node_load($nid);
                $node->original = $node;
                $node->field_number_today['und'][0]['value'] = $last_number_today + 1;
                foreach (field_info_instances('node', 'order') as $field_name => $field_info) {
                  if ($field_name != 'field_number_today') {
                    unset($node->{$field_name});
                  }
                }
                field_attach_presave('node', $node);
                field_attach_update('node', $node);
            }
            else {
                $node = node_load($nid);
                $node->original = $node;
                $node->field_number_today['und'][0]['value'] = 1;
                foreach (field_info_instances('node', 'order') as $field_name => $field_info) {
                  if ($field_name != 'field_number_today') {
                    unset($node->{$field_name});
                  }
                }
                field_attach_presave('node', $node);
                field_attach_update('node', $node);
            }
        }
}