wp-includes/revision.php:277Retrieves the autosaved data of the specified post.
$post_idint$user_idintoptional0WP_Post|falsefunction wp_get_post_autosave( $post_id, $user_id = 0 ) { $args = array( 'post_type' => 'revision', 'post_status' => 'inherit', 'post_parent' => $post_id, 'name' => $post_id . '-autosave-v1', 'posts_per_page' => 1, 'orderby' => 'date', 'order' => 'DESC', 'fields' => 'ids', 'no_found_rows' => true, ); if ( 0 !== $user_id ) { $args['author'] = $user_id; } $query = new WP_Query( $args ); if ( ! $query->have_posts() ) { return false; } return get_post( $query->posts[0] );}Introduced in 2.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/revision.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.