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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 |
|---|---|
| 4626 | |
| 4627 | /** |
| 4628 | * Filters the permalink structure for a term before token replacement occurs. |
| 4629 | * |
| 4630 | * @since 4.9.0 |
| 4631 | * |
| 4632 | * @param string $termlink The permalink structure for the term's taxonomy. |
| 4633 | * @param WP_Term $term The term object. |
| 4634 | */ |
| 4635 | $termlink = apply_filters( 'pre_term_link', $termlink, $term ); |
| 4636 | |
| 4637 | $slug = $term->slug; |
| 4638 | $t = get_taxonomy( $taxonomy ); |
| 4639 | |
| 4640 | if ( empty( $termlink ) ) { |
| 4641 | if ( 'category' === $taxonomy ) { |
| 4642 | $termlink = '?cat=' . $term->term_id; |
| 4643 | } elseif ( $t->query_var ) { |
| 4644 | $termlink = "?$t->query_var=$slug"; |