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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 |
---|---|
761 | $slug = $tag->slug; |
762 |
|
763 | if ( empty( $taglink ) ) { |
764 | $file = get_option( 'home' ) . '/'; |
765 | $taglink = $file . '?tag=' . $slug; |
766 | } else { |
767 | $taglink = str_replace( '%tag%', $slug, $taglink ); |
768 | $taglink = get_option( 'home' ) . user_trailingslashit( $taglink, 'category' ); |
769 | } |
770 | return apply_filters( 'tag_link', $taglink, $tag_id ); |
771 | } |
772 |
|
773 | /** |
774 | * Retrieve the tags for a post. |
775 | * |
776 | * @since 2.3.0 |
777 | * @uses apply_filters() Calls 'get_the_tags' filter on the list of post tags. |
778 | * |
779 | * @param int $id Post ID. |