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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1683 | * Filter the adjacent post relational link. |
| 1684 | * |
| 1685 | * The dynamic portion of the hook name, `$adjacent`, refers to the type |
| 1686 | * of adjacency, 'next' or 'previous'. |
| 1687 | * |
| 1688 | * @since 2.8.0 |
| 1689 | * |
| 1690 | * @param string $link The relational link. |
| 1691 | */ |
| 1692 | return apply_filters( "{$adjacent}_post_rel_link", $link ); |
| 1693 | } |
| 1694 | |
| 1695 | /** |
| 1696 | * Display relational links for the posts adjacent to the current post. |
| 1697 | * |
| 1698 | * @since 2.8.0 |
| 1699 | * |
| 1700 | * @param string $title Optional. Link title format. |
| 1701 | * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. |