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Source View: wp_list_categories

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

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.