Title: wp_is_post_autosave
Published: April 25, 2014
Last modified: August 20, 2026

---

# wp_is_post_autosave( int|WP_Post $post ): int|false

## In this article

 * [Parameters](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#changelog)
 * [User Contributed Notes](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#user-contributed-notes)

[ Back to top](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#wp--skip-link--target)

Determines if the specified post is an autosave.

## 󠀁[Parameters](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#parameters)󠁿

 `$post`int|[WP_Post](https://developer.wordpress.org/reference/classes/wp_post/)
required

Post ID or post object.

## 󠀁[Return](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#return)󠁿

 int|false ID of autosave’s parent on success, false if not a revision.

## 󠀁[Source](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#source)󠁿

    ```php
    function wp_is_post_autosave( $post ) {
    	$post = wp_get_post_revision( $post );

    	if ( ! $post ) {
    		return false;
    	}

    	if ( str_contains( $post->post_name, "{$post->post_parent}-autosave" ) ) {
    		return (int) $post->post_parent;
    	}

    	return false;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/revision.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.1/src/wp-includes/revision.php#L329)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/revision.php#L329-L341)

## 󠀁[Related](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#related)󠁿

| Uses | Description | 
| [wp_get_post_revision()](https://developer.wordpress.org/reference/functions/wp_get_post_revision/)`wp-includes/revision.php` |

Gets a post revision.

  |

| Used by | Description | 
| [WP_REST_Autosaves_Controller::prepare_item_for_response()](https://developer.wordpress.org/reference/classes/wp_rest_autosaves_controller/prepare_item_for_response/)`wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php` |

Prepares the revision for the REST response.

  | 
| [wp_prepare_revisions_for_js()](https://developer.wordpress.org/reference/functions/wp_prepare_revisions_for_js/)`wp-admin/includes/revision.php` |

Prepare revisions for JavaScript.

  | 
| [wp_post_revision_title()](https://developer.wordpress.org/reference/functions/wp_post_revision_title/)`wp-includes/post-template.php` |

Retrieves formatted date timestamp of a revision (linked to that revisions’s page).

  | 
| [wp_post_revision_title_expanded()](https://developer.wordpress.org/reference/functions/wp_post_revision_title_expanded/)`wp-includes/post-template.php` |

Retrieves formatted date timestamp of a revision (linked to that revisions’s page).

  | 
| [wp_list_post_revisions()](https://developer.wordpress.org/reference/functions/wp_list_post_revisions/)`wp-includes/post-template.php` |

Displays a list of a post’s revisions.

  | 
| [wp_xmlrpc_server::wp_getRevisions()](https://developer.wordpress.org/reference/classes/wp_xmlrpc_server/wp_getrevisions/)`wp-includes/class-wp-xmlrpc-server.php` |

Retrieves revisions for a specific post.

  | 
| [wp_xmlrpc_server::wp_restoreRevision()](https://developer.wordpress.org/reference/classes/wp_xmlrpc_server/wp_restorerevision/)`wp-includes/class-wp-xmlrpc-server.php` |

Restores a post revision.

  |

[Show 2 more](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#)
[Show less](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#)

## 󠀁[Changelog](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#changelog)󠁿

| Version | Description | 
| [2.6.0](https://developer.wordpress.org/reference/since/2.6.0/) | Introduced. |

## 󠀁[User Contributed Notes](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#user-contributed-notes)󠁿

 1.  [Skip to note 2 content](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/?output_format=md#comment-content-1507)
 2.   [Codex](https://profiles.wordpress.org/codex/)  [  11 years ago  ](https://developer.wordpress.org/reference/functions/wp_is_post_autosave/#comment-1507)
 3. [You must log in to vote on the helpfulness of this note](https://login.wordpress.org?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Ffunctions%2Fwp_is_post_autosave%2F%23comment-1507)
    Vote results for this note: 2[You must log in to vote on the helpfulness of this note](https://login.wordpress.org?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Ffunctions%2Fwp_is_post_autosave%2F%23comment-1507)
 4. **Check if a saved post is an autosave post, like saving meta box data.**
 5.     ```php
        // If post is an autosave, return.
        if ( wp_is_post_autosave( $post_id ) ) {
        	return;
        }
        ```
    
 6.  [Log in to add feedback](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Ffunctions%2Fwp_is_post_autosave%2F%3Freplytocom%3D1507%23feedback-editor-1507)

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