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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 |
|---|---|
| 481 | else |
| 482 | $depth = -1; // Flat. |
| 483 | |
| 484 | $output .= walk_category_tree( $categories, $depth, $r ); |
| 485 | } |
| 486 | |
| 487 | if ( $title_li && 'list' == $style ) |
| 488 | $output .= '</ul></li>'; |
| 489 | |
| 490 | $output = apply_filters( 'wp_list_categories', $output, $args ); |
| 491 | |
| 492 | if ( $echo ) |
| 493 | echo $output; |
| 494 | else |
| 495 | return $output; |
| 496 | } |
| 497 | |
| 498 | /** |
| 499 | * Display tag cloud. |