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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 622 | $indent = str_repeat("\t", $depth); |
| 623 | $output .= "$indent</ul>\n"; |
| 624 | return $output; |
| 625 | } |
| 626 | |
| 627 | function start_el($output, $category, $depth, $args) { |
| 628 | extract($args); |
| 629 | |
| 630 | $cat_name = attribute_escape( $category->name); |
| 631 | $cat_name = apply_filters( 'list_cats', $cat_name, $category ); |
| 632 | $link = '<a href="' . get_category_link( $category->term_id ) . '" '; |
| 633 | if ( $use_desc_for_title == 0 || empty($category->description) ) |
| 634 | $link .= 'title="' . sprintf(__( 'View all posts filed under %s' ), $cat_name) . '"'; |
| 635 | else |
| 636 | $link .= 'title="' . attribute_escape( apply_filters( 'category_description', $category->description, $category )) . '"'; |
| 637 | $link .= '>'; |
| 638 | $link .= $cat_name . '</a>'; |
| 639 | |
| 640 | if ( (! empty($feed_image)) || (! empty($feed)) ) { |
| Line | Code |
| 702 | } |
| 703 | |
| 704 | class Walker_CategoryDropdown extends Walker { |
| 705 | var $tree_type = 'category'; |
| 706 | var $db_fields = array ('parent' => 'parent', 'id' => 'term_id'); //TODO: decouple this |
| 707 | |
| 708 | function start_el($output, $category, $depth, $args) { |
| 709 | $pad = str_repeat(' ', $depth * 3); |
| 710 | |
| 711 | $cat_name = apply_filters('list_cats', $category->name, $category); |
| 712 | $output .= "\t<option value=\"".$category->term_id."\""; |
| 713 | if ( $category->term_id == $args['selected'] ) |
| 714 | $output .= ' selected="selected"'; |
| 715 | $output .= '>'; |
| 716 | $output .= $pad.$cat_name; |
| 717 | if ( $args['show_count'] ) |
| 718 | $output .= ' ('. $category->count .')'; |
| 719 | if ( $args['show_last_update'] ) { |
| 720 | $format = 'Y-m-d'; |