get_adjacent_post_link()

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

Inputs: $format (string): Link anchor format. $link (string): Link permalink format. $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 terms IDs. Default empty. $previous (bool): Optional. Whether to display link to previous or next post. Default true.

Returns string: The link URL of the previous or next post in relation to the current post.