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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 |
---|---|
540 |
|
541 | /** |
542 | * Filter the HTML output of a taxonomy list. |
543 | * |
544 | * @since 2.1.0 |
545 | * |
546 | * @param string $output HTML output. |
547 | * @param array $args An array of taxonomy-listing arguments. |
548 | */ |
549 | $html = apply_filters( 'wp_list_categories', $output, $args ); |
550 |
|
551 | if ( $r['echo'] ) { |
552 | echo $html; |
553 | } else { |
554 | return $html; |
555 | } |
556 | } |
557 |
|
558 | /** |