This filter is applied within the bcn_breadcrumb_trail class in the display_loop() function. This filter was introduced in version 6.0 to replace the deprecated bcn_li_attributes. This filter was deprecated in version 7.5.1, use the bcn_display_attribute_array filter instead. It receives three parameters:
- $attributes – (string)(required) The attributes placed in the HTML tag that wraps the each breadcrumb
- $type – (array)(optional) The array of type strings for the breadcrumb
- $id – (int|NULL)(optional) The ID of the resource represented by the breadcrumb, will be NULL if no suitable ID exists