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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 |
|---|---|
| 542 | |
| 543 | /** |
| 544 | * Filter the HTML output of a taxonomy list. |
| 545 | * |
| 546 | * @since 2.1.0 |
| 547 | * |
| 548 | * @param string $output HTML output. |
| 549 | * @param array $args An array of taxonomy-listing arguments. |
| 550 | */ |
| 551 | $html = apply_filters( 'wp_list_categories', $output, $args ); |
| 552 | |
| 553 | if ( $r['echo'] ) { |
| 554 | echo $html; |
| 555 | } else { |
| 556 | return $html; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | /** |