Filters the arguments for the Categories widget.

$cat_args array

An array of Categories widget options.

$instance array

Array of settings for the current widget.

This filter is used by the default “WordPress Widget: Categories” before it passes arguments to the wp_list_categories() function.

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

wp_list_categories( apply_filters( 'widget_categories_args', $cat_args, $instance ) );