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. It receives three parameters:

  • $li_attributes(string)(required) The attributes placed in the li 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 not suitable ID exists

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