wp_is_post_revision() WordPress Function

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

	return (int) $post->post_parent;
}
Used By	Description
wp-includes/post-template.php:wp_post_revision_title()	Retrieves formatted date timestamp of a revision (linked to that revisions’s page).
wp-includes/post-template.php:wp_post_revision_title_expanded()	Retrieves formatted date timestamp of a revision (linked to that revisions’s page).
wp-includes/post.php:add_post_meta()	Adds a meta field to the given post.
wp-includes/post.php:delete_post_meta()	Deletes a post meta field for the given post ID.
wp-includes/post.php:update_post_meta()	Updates a post meta field based on the given post ID.