_options_values_in_use($entity_type, $field_name, $values)
Checks if a list of values are being used in actual field values.
File
- core/modules/options/options.module, line 123
 - Defines selection, check box and radio button widgets for text and numeric fields.
 
Code
function _options_values_in_use($entity_type, $field_name, $values) {
  if ($values) {
    $factory = \Drupal::service('entity.query');
    $result = $factory->get($entity_type)
      ->condition($field_name . '.value', $values, 'IN')
      ->count()
      ->accessCheck(FALSE)
      ->range(0, 1)
      ->execute();
    if ($result) {
      return TRUE;
    }
  }
  return FALSE;
}
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