Filters a widget’s settings before saving.

Returning false will effectively short-circuit the widget’s ability to update settings.

$instance array

The current widget instance's settings.

$new_instance array

Array of new widget settings.

$old_instance array

Array of old widget settings.

$widget WP_Widget

The current widget instance.

File: wp-includes/class-wp-widget.php. View all references

$instance = apply_filters( 'widget_update_callback', $instance, $new_instance, $old_instance, $this );