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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 |
---|---|
622 |
|
623 | /** |
624 | * Filters the HTML output of a taxonomy list. |
625 | * |
626 | * @since 2.1.0 |
627 | * |
628 | * @param string $output HTML output. |
629 | * @param array $args An array of taxonomy-listing arguments. |
630 | */ |
631 | $html = apply_filters( 'wp_list_categories', $output, $args ); |
632 |
|
633 | if ( $r['echo'] ) { |
634 | echo $html; |
635 | } else { |
636 | return $html; |
637 | } |
638 | } |
639 |
|
640 | /** |