WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
---|---|
364 | else |
365 | $depth = -1; // Flat. |
366 |
|
367 | $output .= walk_category_dropdown_tree( $categories, $depth, $r ); |
368 | } |
369 |
|
370 | if ( ! $r['hide_if_empty'] || ! empty($categories) ) |
371 | $output .= "</select>\n"; |
372 |
|
373 | $output = apply_filters( 'wp_dropdown_cats', $output ); |
374 |
|
375 | if ( $echo ) |
376 | echo $output; |
377 |
|
378 | return $output; |
379 | } |
380 |
|
381 | /** |
382 | * Display or retrieve the HTML list of categories. |