プラグインに個人データ消去機能を追加する

/**
 * Removes any stored location data from a user's comment meta for the supplied email address.
 *
 * @param string $email_address   email address to manipulate
 * @param int    $page            pagination
 *
 * @return array
 */
function wporg_remove_location_meta_from_comments_for_email( $email_address, $page = 1 ) {
  $number = 500; // Limit us to avoid timing out
  $page   = (int) $page;

  $comments = get_comments(
    array(
      'author_email' => $email_address,
      'number'       => $number,
      'paged'        => $page,
      'order_by'     => 'comment_ID',
      'order'        => 'ASC',
    )
  );

  $items_removed = false;

  foreach ( (array) $comments as $comment ) {
    $latitude  = get_comment_meta( $comment->comment_ID, 'latitude', true );
    $longitude = get_comment_meta( $comment->comment_ID, 'longitude', true );

    if ( ! empty( $latitude ) ) {
      delete_comment_meta( $comment->comment_ID, 'latitude' );
      $items_removed = true;
    }

    if ( ! empty( $longitude ) ) {
      delete_comment_meta( $comment->comment_ID, 'longitude' );
      $items_removed = true;
    }
  }

  // Tell core if we have more comments to work on still
  $done = count( $comments ) < $number;
  return array(
    'items_removed'  => $items_removed,
    'items_retained' => false, // always false in this example
    'messages'       => array(), // no messages in this example
    'done'           => $done,
  );
}

/**
 * Registers all data erasers.
 *
 * @param array $exporters
 *
 * @return mixed
 */
function wporg_register_privacy_erasers( $erasers ) {
  $erasers['my-plugin-slug'] = array(
    'eraser_friendly_name' => __( 'Comment Location Plugin', 'text-domain' ),
    'callback'             => 'wporg_remove_location_meta_from_comments_for_email',
  );
  return $erasers;
}

add_filter( 'wp_privacy_personal_data_erasers', 'wporg_register_privacy_erasers' );