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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 |
---|---|
330 | global $wp_query; |
331 | if ( is_page() ) |
332 | $current_page = $wp_query->get_queried_object_id(); |
333 | $output .= walk_page_tree($pages, $r['depth'], $current_page, $r); |
334 |
|
335 | if ( $r['title_li'] ) |
336 | $output .= '</ul></li>'; |
337 | } |
338 |
|
339 | $output = apply_filters('wp_list_pages', $output); |
340 |
|
341 | if ( $r['echo'] ) |
342 | echo $output; |
343 | else |
344 | return $output; |
345 | } |
346 |
|
347 | // |
348 | // Page helpers |