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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 |
---|---|
877 | if ( 'category' == $taxonomy ) { |
878 | /** |
879 | * Filters the category feed link. |
880 | * |
881 | * @since 1.5.1 |
882 | * |
883 | * @param string $link The category feed link. |
884 | * @param string $feed Feed type. |
885 | */ |
886 | $link = apply_filters( 'category_feed_link', $link, $feed ); |
887 | } elseif ( 'post_tag' == $taxonomy ) { |
888 | /** |
889 | * Filters the post tag feed link. |
890 | * |
891 | * @since 2.3.0 |
892 | * |
893 | * @param string $link The tag feed link. |
894 | * @param string $feed Feed type. |
895 | */ |