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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 |
|---|---|
| 641 | |
| 642 | /** |
| 643 | * Filters the HTML output of a taxonomy list. |
| 644 | * |
| 645 | * @since 2.1.0 |
| 646 | * |
| 647 | * @param string $output HTML output. |
| 648 | * @param array $args An array of taxonomy-listing arguments. |
| 649 | */ |
| 650 | $html = apply_filters( 'wp_list_categories', $output, $args ); |
| 651 | |
| 652 | if ( $r['echo'] ) { |
| 653 | echo $html; |
| 654 | } else { |
| 655 | return $html; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | /** |