This filter is applied within the bcn_breadcrumb class in the set_url member function before passing into esc_url() and then setting the internal $url property. This filter was introduced in 4.3. In 4.4 two additional parameters were made available. It receives three parameters:

  • $url(string)(required) The URL that is being set for the 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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