Title: _wp_get_post_revision_version
Published: April 25, 2014
Last modified: May 20, 2026

---

# _wp_get_post_revision_version( WP_Post $revision ): int|false

## In this article

 * [Parameters](https://developer.wordpress.org/reference/functions/_wp_get_post_revision_version/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/functions/_wp_get_post_revision_version/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/functions/_wp_get_post_revision_version/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/functions/_wp_get_post_revision_version/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/functions/_wp_get_post_revision_version/?output_format=md#changelog)

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

This function’s access is marked private. This means it is not intended for use 
by plugin or theme developers, only by core. It is listed here for completeness.

Gets the post revision version.

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

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

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

 int|false

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

    ```php
    function _wp_get_post_revision_version( $revision ) {
    	if ( is_object( $revision ) ) {
    		$revision = get_object_vars( $revision );
    	} elseif ( ! is_array( $revision ) ) {
    		return false;
    	}

    	if ( preg_match( '/^\d+-(?:autosave|revision)-v(\d+)$/', $revision['post_name'], $matches ) ) {
    		return (int) $matches[1];
    	}

    	return 0;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/revision.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/revision.php#L975)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/revision.php#L975-L987)

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

| Used by | Description | 
| [edit_post()](https://developer.wordpress.org/reference/functions/edit_post/)`wp-admin/includes/post.php` |

Updates an existing post with values provided in `$_POST`.

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

Upgrades the revisions author, adds the current post as a revision and sets the revisions version to 1.

  |

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

| Version | Description | 
| [3.6.0](https://developer.wordpress.org/reference/since/3.6.0/) | Introduced. |

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