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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 |
|---|---|
| 620 | $args['topic_count_text_callback'] = create_function('$count', $body); |
| 621 | } |
| 622 | |
| 623 | $args = wp_parse_args( $args, $defaults ); |
| 624 | extract( $args ); |
| 625 | |
| 626 | if ( empty( $tags ) ) |
| 627 | return; |
| 628 | |
| 629 | $tags_sorted = apply_filters( 'tag_cloud_sort', $tags, $args ); |
| 630 | if ( $tags_sorted != $tags ) { // the tags have been sorted by a plugin |
| 631 | $tags = $tags_sorted; |
| 632 | unset($tags_sorted); |
| 633 | } else { |
| 634 | if ( 'RAND' == $order ) { |
| 635 | shuffle($tags); |
| 636 | } else { |
| 637 | // SQL cannot save you; this is a second (potentially different) sort on a subset of data. |
| 638 | if ( 'name' == $orderby ) |