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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 |
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484 | else |
485 | $depth = -1; // Flat. |
486 |
|
487 | $output .= walk_category_tree( $categories, $depth, $r ); |
488 | } |
489 |
|
490 | if ( $title_li && 'list' == $style ) |
491 | $output .= '</ul></li>'; |
492 |
|
493 | $output = apply_filters( 'wp_list_categories', $output, $args ); |
494 |
|
495 | if ( $echo ) |
496 | echo $output; |
497 | else |
498 | return $output; |
499 | } |
500 |
|
501 | /** |
502 | * Display tag cloud. |