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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 |
---|---|
821 | if ( 'category' == $taxonomy ) { |
822 | /** |
823 | * Filters the category feed link. |
824 | * |
825 | * @since 1.5.1 |
826 | * |
827 | * @param string $link The category feed link. |
828 | * @param string $feed Feed type. |
829 | */ |
830 | $link = apply_filters( 'category_feed_link', $link, $feed ); |
831 | } elseif ( 'post_tag' == $taxonomy ) { |
832 | /** |
833 | * Filters the post tag feed link. |
834 | * |
835 | * @since 2.3.0 |
836 | * |
837 | * @param string $link The tag feed link. |
838 | * @param string $feed Feed type. |
839 | */ |