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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 |
---|---|
814 | if ( 'category' == $taxonomy ) { |
815 | /** |
816 | * Filter the category feed link. |
817 | * |
818 | * @since 1.5.1 |
819 | * |
820 | * @param string $link The category feed link. |
821 | * @param string $feed Feed type. |
822 | */ |
823 | $link = apply_filters( 'category_feed_link', $link, $feed ); |
824 | } elseif ( 'post_tag' == $taxonomy ) { |
825 | /** |
826 | * Filter the post tag feed link. |
827 | * |
828 | * @since 2.3.0 |
829 | * |
830 | * @param string $link The tag feed link. |
831 | * @param string $feed Feed type. |
832 | */ |