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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 |
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285 |
|
286 | if ( ! empty($pages) ) { |
287 | $output = "<select name='$name'>\n"; |
288 | if ( $show_option_none ) |
289 | $output .= "\t<option value=''>$show_option_none</option>\n"; |
290 | $output .= walk_page_dropdown_tree($pages, $depth, $r); |
291 | $output .= "</select>\n"; |
292 | } |
293 |
|
294 | $output = apply_filters('wp_dropdown_pages', $output); |
295 |
|
296 | if ( $echo ) |
297 | echo $output; |
298 |
|
299 | return $output; |
300 | } |
301 |
|
302 | function wp_list_pages($args = '') { |
303 | $defaults = array( |