wp_is_post_autosave( int|WP_Post $post )

Determines if the specified post is an autosave.

Parameters

$post: (int|WP_Post) (Required) Post ID or post object.

Return

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

Source

function wp_is_post_autosave( $post ) {
	$post = wp_get_post_revision( $post );
	if ( ! $post ) {
		return false;
	}

	if ( false !== strpos( $post->post_name, "{$post->post_parent}-autosave" ) ) {
		return (int) $post->post_parent;
	}

	return false;
}

Uses

Uses	Description
wp-includes/revision.php: wp_get_post_revision()	Gets a post revision.

Used By

Used By	Description
wp-includes/rest-api/endpoints/class-wp-rest-autosaves-controller.php: WP_REST_Autosaves_Controller::prepare_item_for_response()	Prepares the revision for the REST response.
wp-admin/includes/revision.php: wp_prepare_revisions_for_js()	Prepare revisions for JavaScript.
wp-includes/post-template.php: wp_post_revision_title()	Retrieve formatted date timestamp of a revision (linked to that revisions’s page).
wp-includes/post-template.php: wp_post_revision_title_expanded()	Retrieve formatted date timestamp of a revision (linked to that revisions’s page).
wp-includes/post-template.php: wp_list_post_revisions()	Display a list of a post’s revisions.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getRevisions()	Retrieve revisions for a specific post.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_restoreRevision()	Restore a post revision

Changelog

Version	Description
2.6.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_is_post_autosave