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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 |
|---|---|
| 829 | } elseif ( 'post_tag' == $taxonomy ) { |
| 830 | /** |
| 831 | * Filters the post tag feed link. |
| 832 | * |
| 833 | * @since 2.3.0 |
| 834 | * |
| 835 | * @param string $link The tag feed link. |
| 836 | * @param string $feed Feed type. |
| 837 | */ |
| 838 | $link = apply_filters( 'tag_feed_link', $link, $feed ); |
| 839 | } else { |
| 840 | /** |
| 841 | * Filters the feed link for a taxonomy other than 'category' or 'post_tag'. |
| 842 | * |
| 843 | * @since 3.0.0 |
| 844 | * |
| 845 | * @param string $link The taxonomy feed link. |
| 846 | * @param string $feed Feed type. |
| 847 | * @param string $feed The taxonomy name. |