How to add (class and data) attributes to a link through field preprocessor in drupal 7

add_class_to_link_through_field_preprocessor.php

/**
 * Implements hook_preprocess_field().
 */
function YOUR_THEME_preprocess_field(&$variables, $hook) {
  if ($variables['element']['#bundle'] == 'bundle_name') {
    $link_attributes = &$variables['items'][0]['#path']['options']['attributes'];
    
    // Add colorbox-node class to class attribute
    $link_attributes['class'] = ['colorbox-node'];
    
    // Add data-href to link with path.
    $link_attributes['data-href'] = $variables['items'][0]['#path']['path'];
    
    // Add query parameters to url.
    $variables['items'][0]['#path']['options']['query'] = array(
      'width' => '500',
      'height' => '500'
    );
  }
}