attachment_updated action-hook . WP 4.4.0

Fires once an existing attachment has been updated.

Usage

add_action( 'attachment_updated', 'action_function_name_8185', 10, 3 );
function action_function_name_8185( $post_ID, $post_after, $post_before ){
	// action...
}

$post_ID(int)

Post ID.

$post_after(WP_Post)

Post object following the update.

$post_before(WP_Post)

Post object before the update.

Where the hook is called

do_action( 'attachment_updated', $post_ID, $post_after, $post_before );

Where in WP core the hook is used WordPress

add_action( 'attachment_updated', 'wp_check_for_changed_slugs', 12, 3 );

add_action( 'attachment_updated', 'wp_check_for_changed_dates', 12, 3 );