get_adjacent_post_rel_link()

get_adjacent_post_rel_link() — Retrieves the adjacent post relational link. Can either be next or previous post relational link.

Inputs: $title (string): Optional. Link title format. Default ‘%title’. $in_same_term (bool): Optional. Whether link should be in the same taxonomy term. Default false. $excluded_terms (int[]|string): Optional. Array or comma-separated list of excluded term IDs. Default empty. $previous (bool): Optional. Whether to display link to previous or next post. Default true. $taxonomy (string): Optional. Taxonomy, if $in_same_term is true. Default ‘category’.

Returns string|null: The adjacent post relational link URL.