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Description

Returns the object subtype for a given object ID of a specific type.

Usage

$string = get_object_subtype( $object_type, $object_id );

Parameters

$object_type

( string ) required – Type of object metadata is for. Accepts 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.

$object_id

( int ) required – ID of the object to retrieve its subtype.

Returns

string The object subtype or an empty string if unspecified subtype.

Source

File name: wordpress/wp-includes/meta.php
Lines:

function get_object_subtype( $object_type, $object_id ) {
  $object_id      = (int) $object_id;
  $object_subtype = '';

  switch ( $object_type ) {
    case 'post':
      $post_type = get_post_type( $object_id );

      if ( ! empty( $post_type ) ) {
        $object_subtype = $post_type;
      }
      break;

    case 'term':
      $term = get_term( $object_id );
      if ( ! $term instanceof WP_Term ) {
        break;
      }

      $object_subtype = $term->taxonomy;
      break;

    case 'comment':
      $comment = get_comment( $object_id );
      if ( ! $comment ) {
        break;
      }

      $object_subtype = 'comment';
      break;

    case 'user':
      $user = get_user_by( 'id', $object_id );
      if ( ! $user ) {
        break;
      }

      $object_subtype = 'user';
      break;
  }

  
/**
 * Filters the object subtype identifier for a non-standard object type.
 *
 * The dynamic portion of the hook name, `$object_type`, refers to the meta object type
 * (post, comment, term, user, or any other type with an associated meta table).
 *
 * Possible hook names include:
 *
 *  - `get_object_subtype_post`
 *  - `get_object_subtype_comment`
 *  - `get_object_subtype_term`
 *  - `get_object_subtype_user`
 *
 * @since 4.9.8
 *
 * @param string $object_subtype Empty string to override.
 * @param int    $object_id      ID of the object to get the subtype for.
 */
  return apply_filters( "get_object_subtype_{$object_type}", $object_subtype, $object_id );
}
 

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